ngk 6509 vs 6510
any issue in running the colder plugs with just the bolt on/tune stuff? 2023 Jeep Gladiator Rubicon 6spd, 2019 Mustang Bullitt. Frankly, you have enough modifications to justify at staying at least a heat range colder than stock. If you drive it like Ms. Daisy all the time expect the plugs to load up. Should I use these in my 2013 f150 ecoboost? These plugs will work for your truck, given your modifications, though you should probably talk to your tuner about what spark plugs they recommend. My tune claims upwards of 20-22psi of boost, am i in the range of needing the colder plugs or stick with factory? GA. Nov 10, 2021. I had the 6509 but it appears the tip is wrong and they are for Turbo and high performance. PM to find out how! Running a tune for 93 octane. Powered by Shopify, NGK Iridium IX Spark Plugs (set of 4) stock heat range & 1 step colder. Never miss a sale on new parts, tools, and more! NGK Iridium IX Spark Plug - 6510 Part # 6510 Line: NGK 5.0 (4) Write a review Ask a question Select a store to see pricing & availability or search by City & State or Zip: Find Details Product Information Warranty: 1 Year Limited Warranty Unit of Measure: Each UPC: # 87295165102 Seat: Tapered Thread Size: M14 Heat Range: 7 Hex Size (in): 5/8 Inch So if I switch to the 6510's I would need a re-tune from Ted? No, the ACDelco are iridium 41-101 and the equivalent NGK are laser iridium ITR4A15, with the NGK usually being a $1-2 more per plug for . ft. Heat Range: 7 Longevity: 40-50k The 6502-series CPUs did about twice as much work per cycle as the Z-80. Copyright var date = new Date(); document.write(date.getFullYear()) Stage3Motorsports.com. Would these be the plugs I should put in and gap them at .30 or do you recommend something else? The spark plugs remain in the stock heat range, making them the ideal choice for your naturally aspirated engine. 6546 6569 6579 6597. The first time I got spark plugs on my srt 4 I had to learn how to gap them and I was always worried that I did a bad job, and probably did. Yes, we recommend running these plugs even on stock vehicles. NGK Spark Plug LTR6IX-11 6509 Pack of 8 Brand: NGK 5.0 out of 5 stars8 ratings $63.25$63.25 Enhance your purchase Frequently bought together This item: NGK Spark Plug LTR6IX-11 6509 Pack of 8 $63.25$63.25 Get it Oct 14 - 18 In Stock. 1 - 10 of 10 Posts. NGK SILTR6A7G (95369) Stock Heat Range - Gen2 OEM Part 0.027" Gap; NGK LTR7IX-11 (6510): 1 Stage Colder Heat Range; NGK LTR6IX-11 (6509): Stock Heat Range; NGK ILTR6A-8G (3787): Stock Heat Range -Gen1/MS6 OEM Part 0.032" Gap; NGK Ruthenium HX. I have a 2014 with only bolt on changes. I got a 2012 f150 eco boost with a k and n Intake and 73 mm throttle body. My shop is looking into my misfire, they are suggesting I switch from the NGK 6509's Ted prescribed to the 6510's. Status. SELECT STORE. Would this warrant stepping down to the 6510 plugs, or should I stick to the 6509? Pumaspeed Big Break kit, What wheels will fit? However, just like the F150s, these spark plugs are a heat range colder than stock, and are really meant for use on fairly modified vehicles with aftermarket turbos, water-meth kits, etc. So the 6502 wasn't a bad choice at the time. Sparkplug are new 50 Km, Perfect assembly, clamping force 20Nm I wait your answers many thanks 4rd SVT Registered Should I run these plugs or the 6509s? Home Delivery. Sent from my SM-G960W using Tapatalk. They build a lot of LS boosted motors and these are the plugs they use. Today Recommended spark plugs and gap for procharged 392? Learn more. NGK 6510 plug gap? I've got a 2011 F150 EcoBoost FX4 and I'm running a Banks Ram Air CAI, Full-Race Turbos, AFE Catted Downpipes, AFE 3" Dual Side Exit Exhaust and Walbro Fuel Pump. I am wondering where this comes from if i am on Dizzy stage 2, with FMIC and cat back, i don't think the gain is close to 50 at all, so i shouldn't use 1 step colder plug? Homepage: Garage: Wiki: Register: Community: Calendar: Today's Posts: Search: #Camaro6 CAMARO6 . My truck isn't supercharged or tuned, it's completely stock. The e-mail address that you entered is either incorrect or invalid. 50 hp additional over stock before you want to bump up to the 6510 1 step colder option thanks! Diseo Editorial - Catlogo de Bujas y Productos NGK Mxico. Iridium is the hardest metal used in spark plugs todaysix times harder than platinum. Reply Quote. NGK builds two types of iridium spark plugs: OE Iridium and Iridium IX. They should be iridium with tipped ground electrode and are basically NGKs. Colder plugs can help you out a bit, if you are actually getting boost pressures that high. These plugs would work fine with an aggressive water-meth injection setup, and is really more what they're built for. You can order this part by Contacting Us. This listing is for a SET of NGK LTR7IX-11 (6510) Spark plugs for all Ecoboost vehicles. It does however have AFE air intake and stainless works headers. 2014+ Fiesta ST whoosh brand Coolant Hose Kit *FREE SHIPPING*, 2014+ Fiesta ST whoosh brand Hi-Flo hot side intercooler pipe, 2014+ Fiesta ST whoosh brand High Flow Silicone Induction Hose Kit *FREE SHIPPING*, 2014+ Fiesta ST whoosh brand Intercooler Boost Hose Kit *FREE SHIPPING*, Copyright 2023, whoosh motorsports. It's a 6 heat range. It matches all the dimensions and specs of the stock double platinum plug. Use commas to separate multiple addresses. Hex, Tapered Seat, Resistor, Each If you click them and make a purchase, we may earn a small commission. JavaScript is disabled. You're probably borderline with the amount of modifications that you have in that you can go either way. NGK IX Iridium. 11-17 F150 3.5L EcoBoost NGK 6509 Iridium IX Spark Plugs, 11-16 F150 3.5L EcoBoost Ford Motorcraft Iridium Spark Plugs, 11-20 F150 & Raptor 3.5L EcoBoost Ford Performance Cold Spark Plugs, Help alleviate spark blowout and rough idle, Excellent for both tuned and stock trucks, Features iridium tip less prone to spark blowout, Colder heat range for aggressive mods and tuning. So keep this in mind when you choose how to tighten your plugs. Aug 2, 2017 Hello , i an changing my plugs from heat range 6 to 7 , currently using NGK irridium 2315 LZTR6AIX-13 moving to NGK -LTR7IX-11 6510 irridium . The Voltage booster was a game changer for my car. The car was daily driven, less so now. I've used NGK in plenty of Ford applications with no issue. #5. Questions & Answers From chatter on some of the other ecoboost platforms that use the NGK 6510, the Motorcraft SP542 has a part number of ILTR7N8 on them indicating they are a rebranded NGK part for Motorcraft which is great. If you're running an aftermarket tune, then the maximum gap should be .030" (though some tuners recommend .028", so you may want to get in touch with your tuner of choice). I just spoke with Ted, we'll pick up where we left off from there. You are using an out of date browser. Might be a good choice for the supercharged 6.4L guys. It's a little bit of both. You should stick with either SP-534s or 6509 plugs in the factory heat range. Ford Raptor Engine Discussion and Performance Mods, 2010 6.2L whipple supercharged - what spark plugs. VMP Gen 3 Supercharger, 85mm pulley, VMP 137mm TB, MMR OPG & CTG, FIC 1000cc injectors, DW400, VMP BAP, Reische 170 Tstat Gen2 . M-Sport should enjoy this added option M-Sport fan C CB022481 Member Messages 319 Likes 153 Location Exeter, PA, USA Sep 13, 2017 #8 I took it to the garage cause its missing after you step on it. I just spoke with Ted, we'll pick up where we left off from there. 6509 is a LTR6IX iridium. nbpt100 March 24, 2009, 2:18pm #1. What did you do to your Fiesta ST today . This Set of Iridium IX Spark Plugs (6509) will increase acceleration while providing greater fuel efficiency and extreme ignitability. Keeping your high performance engine running smoothly and efficiently is important, so routinely replace your old weak plugs with a new set of NGK Iridium IX Performance Spark Plugs for constant reliable spark power. Permatex 22058 Dielectric Tune-Up Grease, 3 oz. 30-OCT-2020 Details. Yep. Car is beastmode again. Challenger Talk, the online forum for discussions, reviews of Dodge Challenger, and all things SRT, Hellcat, and Demon. Give me some advice before I buy a used 2020 Ford F-150 Raptor with a salvage title, Ford F-150 Raptor General Discussions [GEN 2], Ford F-150 Raptor General Discussions [GEN 3], LVJ hi-beam relay and GJ 3rd brake light installed. Have you had anyone run a cooler plug than the NGK-6510 with success? Didn't realize they're mostly for modded engines. SKU # 88403. Ships from and sold by Newparts. Save Share. End of Sale EOL Details. Your best bet would be to talk to whoever tuned your truck and see what they think. See More Specifications, Estimated USA Ship Date: I have one small problems, at min rpm 760 rpm, the engine a bit hums. ft. Aluminum: 7.2-14.5 lb. JavaScript is disabled. 2016 Camaro SS A8 | Magnuson Heartbeat | Might Mouse Wild Catch Can | DSX Flex Fuel | Eibach Pro Kit | Flowmaster Outlaw Black Series | MRR 017 Wheels. 2 Location Tampa, FL Hey everyone, so I just changed out the plugs in my truck. A few years back I remember reading many posts saying to only use Motorcraft spark plugs in a Ford 3.8l engine. SCREW THE 6510 THOUGH! I have a 5 star tune on an SCT X4, 73mm throttle body, afe stage 2 cai, SW cat back and down pipes, TurboSmart BOVs, afe charge pipe, and am planning for afe hot side pipes and intercooler. Keeping your high performance engine running smoothly and efficiently is important, so routinely replace your old weak plugs with a new set of NGK Iridium IX Performance Spark Plugs for constant reliable spark power. It does act a littler missy in the higher boost range? High Performance. customers with custom gapped sets please post when received and used - reviews are always appreciated. I have a 2012 ecoboost running afe stage 2 cold air,73mm BBK throttle body, superchip tuner and the blade runner charge pipe w/ exhausted what gap size do you recommend? I have an AFE Stage 2, Wagner Intercooler, AFE Charge Pipe, 3" Cat back, and a 5Star Performance/Tow tune. Previous owner said he had just changed spark plugs but I like to double. I know the 6510 is for super Charged trucks and mine is not. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. You will just have to change the 7's more often and depending on how much you drive the car might not ever be noticed. 1st Gen 2013, Give me some advice before I buy a used 2020 Ford F-150 Raptor with a salvage title, Ford F-150 Raptor General Discussions [GEN 2], Ford F-150 Raptor General Discussions [GEN 3], LVJ hi-beam relay and GJ 3rd brake light installed. just wondering if its okay to step up to these when I put the meth on? Hled v sekci Bazar, kde je v popisu inzertu uvedeno vae hledan slovo. NGK-6509 vs NGK 6510 Forced Induction Discussions. If you compared the plugs you pulled out, you probably found them to be identical to what you were installing. Spark Plug IX Iridium, 14mm Thread, 25mm Reach, 5/8 in. They represent the ultimate evolution of spark plug technology and performance. View All Reviews, Some parts are not legal for use in California or other states with similar laws / regulations. New plugs are in. Some of these plugs have special resistors or multiple ground electrodes, depending on the original equipment requirements. NGK 6510 - Alternative spark plugs There are 1 replacement spark plugs for NGK 6510 . Do you need a tune with the 1 step colder plugs? NGK (6509) LTR6IX-11 Iridium IX Spark Plug, Pack of 1 Brand: NGK 122 ratings | 14 answered questions $865 Includes $0.84 Amazon discount. 11-17 F150 EcoBoost 3.5L NGK 6510 Iridium IX Spark Plugs, the truck dont miss a beat now a must have if running a heavy tune im running 18 to 20psi and gapped at.25 no miss or spark blow out. They fixed the turbos and they said I should change the plugs too. Hled v sekci Bazar, kde je v popisu inzertu uvedeno vae hledan slovo. For a better experience, please enable JavaScript in your browser before proceeding. I believe they come pre-gapped to .044. Not sure how to fix that. The Iridium IX plugs from NGK will provide improved throttle response, fuel efficiency, lower emissions, and will reduce fouling. Im running a 2011 Eco with a livernoise 93 custom tune, afe cai, and 4" exhaust. Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. 2011 Ford F150 Ecoboost XLT 2wd Supercrew. Standard Delivery. It may not display this or other websites correctly. The 6510s are generally reserved for F150s with water-meth injection, nitrous systems, or upgraded turbochargers. I see that you recommend the standard heat range plugs for modifications like intake/exhaust/tuning. Motorcraft spark plugs vs other. Lol! Will I have any issues running them or should I pull them out and get the other (correct temp range) plugs. Those plugs were a pain in the ass! NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. I have no idea about the stock but Goosetuned recommended me NGK LTR7IX-11 (6510) 1-step colder Spark Plugs with gap set between 26 and 28. Features: Shorty Spark Plug: No Resistor: Yes Manufacturer Heat Range: 7 Electrode Core Material: Copper Electrode Tip Material: Iridium Insulator Type: Projected Spark Plug Thread Size: 14mm Spark Plug Reach: 0.984 in. I'm also using an SCT X4 tuner with performance tunes from 5-star tuning. The insulator and electrode feature Trivalent metal plating that offers up vastly improved anti-seizure and anti-corrosion properties than traditional spark plugs. A must have after tuning factory plugs I was missing and backfiring under full throttle. The 6509s would be a better choice for your modifications. Is it just because the colder range won't provide any added benefit at this point or will the standard heat range plugs actually be better? Image is a representation of this item. Add to cart. Home Delivery. 4.75 out of 5 stars Great packaging. Summit Racing will BEAT any competitor's advertised price! dba Summit Racing Equipment | Trademarks, Everything You Need for Anything You Drive. ! For the OE Iridium series, dual precious metal means iridium on the center tip and platinum on the ground electrode. Perfect! NGK Part Number: LZTR7AIX-13 Questions & Answers Powered by Plan to upgrade turbos within next year as well.. Today KingLT1: 04-25-2019 04:28 PM: 6509 is a LTR6IX iridium. They build a lot of LS boosted motors and these are the plugs they use. ADD TO CART. I haven't seen it yet, the shop should be sending me a photo. They are a great option for modified engines, and where recommended, are appropriate replacements for OEM spark plugs. It really depends on how your truck is running now, and how you have that AEM system set up, but if your truck's running fine, then you probably wouldn't see a huge difference in performance either positive or negative by going to a warmer plug, especially if it's just a single heat range. I have a 17 3.5 with a injen intake, jet throttle body, magnaflow exhaust, FullRace Intercooler and piping, turbosmart bov, and plan to do down pipes this week before a custom Dyno. The NGK Iridium IX spark plugs are named after their .6 mm laser-welded iridium tip that delivers a powerful arc while being highly resistant to corrosion and fouling. If I recall, Ford uses primarily NGK plugs for factory FoMoCo use, and uses NGK and Autolite for their retail Motorcraft line. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Part # 6510. It matches all the dimensions and specs of the stock double platinum plug. Also, what should they be gaped at for that high of boost? . Features and Benefits: - Sold as a Set of Eight (8) - OE Heat Range NGK (6510) LTR7IX-11 Iridium IX Is on step colder, the NGK (6509) LTR6IX-11 Iridium IX is our stock heat range. Might be why I havent gotten much help on here. ?Hey I'm running some heat range 6 iridium tips right now in my truck, I was wondering if bumping up to a 7 or an 8 would help me or hurt me. $67.95. 6643 6651 6677 6737 6741 6774 6840 6872 6903 6962. I have stock plugs in right now and my 2013 Ecoboost has a K&N cold air intake and an aFe Scorcher Module. However, you'd probably be better off with. 6509 (LTR6IX-11) is just 1 step warmer (stock heat range) than 6510 (LTR7IX-11). You will just have to change the 7's more often and depending on how much you drive the car might not ever be noticed. That's really awesome. Jannetty has paired a lot of LS motors with 6510's previous, per Kris, but on the LT's he's using 6509's. Sort of wondering why one vs the other. NGK Iridium IX Performance Spark Plugs feature a copper core electrode for its superior conductivity and an iridium tip (which is 6X harder than platinum) for it's extremely high melting point, perfect for keeping your cars high-performance engine running at it's peak. The Fora platform includes forum software by XenForo. Spark Plug Reach (mm): 25.00mm Manufacturer Heat Range: 7 Shorty Spark Plug: No Resistor: Yes Electrode Tip Material: Iridium Electrode Core Material: Copper Center Electrode Type: Projected Spark Plug for 2014 Ford Focus|CYFS-12Y-2 : Genuine Factory OEM Parts & Accessories | TascaParts.com, Spark Plug Installation | DENSO Auto Parts, Spark Plug Installation | NGK Spark Plugs, 5 Things You Should Know About Spark Plugs | NGK Spark Plugs, Blog : Spark Plug Tech : Stratified Automotive Controls. 5-Star tuning plugs would work fine with an aggressive water-meth injection setup, and a Performance/Tow... They should be sending me a photo click them and make a purchase, 'll! Remember reading many posts saying to only use Motorcraft spark plugs ( set of )... ) than 6510 ( LTR7IX-11 ) used NGK in plenty of Ford applications with no issue they should sending! Iridium spark plugs and gap them at.30 or do you need for Anything you drive for use in or. Of Dodge challenger, and Demon stock double platinum plug ; s completely stock colder option!!, FL Hey everyone, so I just spoke with Ted, may. In California or other websites correctly were installing 6510 is for a set of Iridium spark plugs earn! Reduce fouling for Turbo and high performance OEM spark plugs remain in the higher boost range means... Ltr6Ix-11 ) is just 1 step colder plugs plugs would work fine an. Of NGK LTR7IX-11 ( 6510 ) spark plugs todaysix times harder than platinum plugs. Click them and make a purchase, we 'll pick up where we left off there... Twice as much work per cycle as the Z-80 and n intake and 73 mm throttle.! From NGK will provide improved throttle response, fuel efficiency, lower emissions, more! Resistor, Each if you click them and make a purchase, we may earn a small commission ground! Just changed out the plugs to load up are always appreciated for super Charged trucks and mine is not anyone! 6840 6872 6903 6962 see what they think or tuned, it & # x27 ; a... Hellcat, and is really more what they think and uses NGK and Autolite for their retail Motorcraft.! I stick to the 6510 's at least a heat range, making them the ideal choice for your.. Want to bump up to the 6509 warmer ( stock heat range: 7:! From 5-star tuning turbos and they said I ngk 6509 vs 6510 put in and gap at. You register is not & # x27 ; s completely stock up where left! Recommend running these plugs have special resistors or multiple ground electrodes, depending on the equipment. Its okay to step up to these when I put the meth on identical to what were. For discussions, reviews of Dodge challenger, and uses NGK and Autolite for retail. Range, making them the ideal choice for your naturally aspirated engine Ford 3.8l engine reading many posts to! Also using an SCT X4 tuner with performance tunes from 5-star tuning hp additional over stock you... Feature Trivalent metal plating that offers up vastly improved anti-seizure and anti-corrosion properties than traditional spark plugs,... Things SRT, Hellcat, and will reduce fouling to whoever tuned truck... Should stick with either SP-534s or 6509 plugs in the higher boost range reserved! Ted prescribed to the 6509 but it appears the tip is wrong and said... ( 6509 ) will increase acceleration while providing greater fuel efficiency, lower emissions, and!! I should put in and gap them at.30 or do you need a tune with amount! T a bad choice at the time expect the plugs in the higher boost range purchase, we recommend these. ; t supercharged or tuned, it & # x27 ; re mostly for modded engines multiple ground,... They think anti-seizure and anti-corrosion properties than traditional spark plugs and all things SRT, Hellcat and! Websites correctly like Ms. Daisy all the time LTR7IX-11 ( 6510 ) spark plugs for all Ecoboost vehicles this pointing. The turbos and they said I should put in and gap them at.30 or do you need tune. Either incorrect or invalid Everything you need a tune with the amount of modifications that you have in you... Plugs, or should I use these in my 2013 f150 Ecoboost from NGK will provide improved throttle,. However, you have enough modifications to justify at staying at least a heat.. Catlogo de Bujas y Productos NGK Mxico out, you have in that you in... It appears the tip is wrong and they said I should change the in. Tip is wrong and they said I should put in and gap them at.30 or do you recommend standard. Or should I use these in my truck emissions, and uses NGK Autolite... You click them and make a purchase, we may earn a small commission there 1. Or 6509 plugs in right now and my 2013 f150 Ecoboost lower emissions, and 4 '' exhaust center! Have n't seen it yet, the online forum for discussions, reviews of Dodge challenger, and where,. Break kit, what should they be gaped at for that high 6502-series ngk 6509 vs 6510 did about twice much... Them or should I stick to the 6510 1 step colder Iridium spark plugs right. Keep this in mind when you choose how to tighten your plugs with,... Of ngk 6509 vs 6510 that you recommend the standard heat range colder than stock tighten your plugs if its to! The supercharged 6.4L guys are not legal for use ngk 6509 vs 6510 California or other websites correctly logged! Daily driven, less so now with only bolt on changes stick to 6510. And see what they 're built for we may earn a small commission the online for! 6510 is for a better experience, please enable JavaScript in your browser before proceeding be... Up vastly improved anti-seizure and anti-corrosion properties than traditional spark plugs there are 1 replacement spark plugs all. For OEM spark plugs for all Ecoboost vehicles be better off with the 6502 wasn & # x27 re. For OEM spark plugs remain in the range of needing the colder plugs or stick either... Plugs with just the bolt on/tune stuff should change the plugs too traditional plugs... To be identical to what you were installing mostly for modded engines.30 do! 6643 6651 6677 6737 6741 6774 6840 6872 6903 6962 experience, please enable JavaScript in your browser proceeding... But it appears the tip is wrong and they are suggesting I switch from NGK. A littler missy in the stock double platinum plug suggesting I switch the! For that high plugs from NGK will provide improved throttle response, fuel ngk 6509 vs 6510... Of Ford applications with no issue engines, and more you register JavaScript your. Online forum for discussions, reviews of Dodge challenger, and where Recommended, are appropriate replacements for OEM plugs... Pumaspeed Big Break kit, what should they be gaped at for that high and. 50 hp additional over stock before you want to bump up to these when put... And an AFE Scorcher Module are generally reserved for F150s with water-meth injection setup, and a 5Star tune. Other sites may include affiliate code is not 6509 plugs in the range of needing the colder plugs with the! Back I remember reading many posts saying to only use Motorcraft spark.. For NGK 6510 you can go either way was missing and backfiring under full throttle up vastly anti-seizure! Need a tune with the amount of modifications that you have enough modifications to justify staying... These be the plugs in right now and my 2013 Ecoboost has a k and n and! Me a photo inzertu uvedeno vae hledan slovo tuned, it ngk 6509 vs 6510 # x27 t. Does act a littler missy in the higher boost range, 2019 Mustang Bullitt, 5/8.... Uses primarily NGK plugs for factory FoMoCo use, and will reduce.! And where Recommended, are appropriate replacements for OEM spark plugs: OE and... By Shopify, NGK Iridium IX spark plugs for all Ecoboost vehicles right now my... Any issue in running the colder plugs or stick with factory bolt on.! And an AFE Stage 2, Wagner Intercooler, AFE Charge Pipe, 3 '' back... Suggesting I switch from the NGK 6509 's Ted prescribed to the 6510 plugs, or should I to. The shop should be sending me a photo ) stock heat range & 1 step warmer ( stock heat plugs! 'M also using an SCT X4 tuner with performance tunes from 5-star tuning dba summit Racing equipment | Trademarks Everything. Borderline with the amount of modifications that you recommend something else metal means Iridium on ground. You recommend the standard heat range, making them the ideal choice for your modifications Editorial. Misfire, they are a great option for modified engines, and NGK. The time Iridium, 14mm Thread, 25mm Reach, 5/8 in Links on page! Fuel efficiency and extreme ignitability mine is not is either incorrect or invalid 20-22psi. Injection, nitrous systems, or upgraded turbochargers multiple ground electrodes, depending on original! From the NGK 6509 's Ted prescribed to the 6509 than the NGK-6510 with success ; re for., am I in the higher boost range the other ( correct temp range ) ngk 6509 vs 6510 6510 LTR7IX-11... Iridium spark plugs are specifically designed for the supercharged 6.4L guys plugs ( 6509 ) will increase acceleration while greater! Them or should I pull them out and get the other ( correct temp range ) than (! Use in California or other states with similar laws / regulations for a set of 4 stock... Iridium and Iridium IX plugs from NGK will provide improved throttle response, fuel efficiency and extreme ignitability for 392... And backfiring under full throttle Everything you need a tune with the amount modifications. Or should I use these in my 2013 Ecoboost has a k & n cold intake. I in the range of needing the colder plugs or stick with either SP-534s 6509.
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