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NGK Iridium Spark Plug One Step Colder 2309

MODEL # NGK LFR7AIX

$11.20


  • Q: DOES IT WORK FINE WITH E85?  FABIO TATEMOTO1 year ago

    I am wondering work with E85 full. Is there any problem or this spark works perfect with it?
  • Q: plugs   chrismoore63 years ago

    I have been looking to go to these but the upgrades I have are a full turbo back exhaust, new intake, new bov, and pro tuned. Would this be a good upgrade.
    • 0 of 0 people found the following answer helpful

      A:  This is likely not a good option for your setup, sticking with the stock heat range plugs would be best.

      ryanw20299728
        
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  • Q: 2008 WRX w/ VF52 swap  rstevensunleeshd257484 years ago

    I'm running a catless TBE, AEM CAI, Grimmspeed EBCS and VF52 turbo on a bit of an aggressive tune. I know I'm beyond 100hp over the stock 2008 WRX power levels and I've been having some issues with feedback knock, should I install these one step colder plugs?
    • 0 of 0 people found the following answer helpful

      A:  Unfortunately we do not have a way to verify whether it would be best to run a step colder. I recommend speaking with your tuner and seeing what they recommend for your setup.

      Nick S. @ RallySport Direct 4 years ago  
        
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  • Q: Gap high boost   Michell Lopez4 years ago

    What is the best gap for 27 psi of boost with bloch Dom 2.5XT-R?
    • 0 of 0 people found the following answer helpful

      A:  The answer to this is very relative. I recommend consulting your tuner regarding where he would like the gap set. Thank you.

      Sterling W. @ RallySport Direct 4 years ago  
        
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  • Q: 09 WRX  distefano.vincent622534 years ago

    I have a 09 WRX(3 inch catted turbo back cnt, cobb lightweight pulley, synapse 100% recirc, and a very aggressive tune, estimated power of 280 and around 320 torque. would the one step cold be beneficial or harmful to my car? also would have to get a tune? Thanks!
  • Q: One step colder plugs  Mh4life6664 years ago

    Hi, I'm looking to replace the spark plugs on my 08 forester sports it's turbo but stock, so could I use these and would it be fine?
    • 1 of 1 people found the following answer helpful

      A:  Stock heat range plugs are recommended for a stock car and up to Stage 2. You could install these plugs, but they would not last as long because colder plugs tend to foul out sooner than stock heat range.

      Zach G. @ RallySport Direct 4 years ago  
        
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  • Q: 2013 STI  cjr8904711165 years ago

    I am about to be running with the following mods on my sti: TBE, intake, tomei equal length headers with up pipe, grimmspeed ebcs, and tomei FPR. With this setup would you recommend upgrading to these plugs at this power level? Also, do I need any additional parts when upgrading to these? Thanks
    • 1 of 1 people found the following answer helpful

      A:  For your setup either stock or one step colder would work and I recommend asking your tuner if they have a preference for one over the other for your setup. No additional parts are needed for these plugs.

      Zach G. @ RallySport Direct 5 years ago  
        
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  • Q: 2011 STI COBB stage 2 with COBB SF intake  0iyPE5Ia5 years ago

    Do you know if these would be recommended for a 2011 STI with COBB stage 2 and with COBB SF intake running the COBB OTS maps? I see your previous answer One step colder plugs are generally not recommended until you are making approximately 100HP over stock. Sorry I don't have access to a dyno, and according to COBB general info I'm around 28% hp gains for a stage 2 which would be in the order of 85hp.
    • 1 of 1 people found the following answer helpful

      A:  These would typically not be more efficient for a Stage 2 vehicle. It is recommended to stick with the stock heat range plugs for now.

      Nick S. @ RallySport Direct 5 years ago  
        
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  • Q: stock 09 wrx  09boostedwrx5 years ago

    Will these be a good replacement on my stock 2009 wrx.wrx? I'm about toto hit 60k on milage. Thanks rsd!
    • 0 of 0 people found the following answer helpful

      A:  One a completely stock vehicle we recommend sticking with the stock heat range plugs. One step colder plugs are generally not recommended until you are making approximately 100HP over stock.

      Tanner S. @ RallySport Direct 5 years ago  
        
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  • Q: 2006 wrx  zeke885 years ago

    Will these plugs work with the cobb vf39 stage 3 ots map?
  • Q: NGK Iridium Stock vs One Step Colder  scoobydoosubaru6 years ago

    I was wondering if there would be any disadvantage to getting the NGK Iridium One Step Colder. I am running a stage 2 COBB OTS in my 07 STI. I was told unless you make over 100+hp over stock its not necessary, but its cheaper than the stock, its gapped to .032 whereas the stock NGK is gapped to .042 so you would have to change it, and finally I might have plans in the future for more power. I was just wondering what the negatives would be running the one step colder now currently as my car stands. Thanks
    • 0 of 0 people found the following answer helpful

      A:  There really isn't a disadvantage so, There really isn't a need but there would be no harm done to run one step colder. In my personal opinion I would go with the stock heat range.

      Cole K. @ RallySport Direct 6 years ago  
        
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  • Q: ap re map  Del Rosso957 years ago

    do i have to re map my car when i put these in
    • 0 of 0 people found the following answer helpful

      A:  In order to effectively utilize a colder step plug, power needs to exceed stock levels and a tune is recommended.

      paul559b5ed28149810a128b5c51
        
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  • Q: application  Deathsythe979810458 years ago

    description says 04-07 sti. catagory list says inc. 04-11 sti. would like to make sure this fits my application. i have 09 sti
    • 0 of 0 people found the following answer helpful

      A:  You got us on this one. These will fit the 2004-2011 STI as the 2008+ use the same plugs as the 2004-2007. I have fixed the description. Thank you.

      guest5633b7522a8d259b038ba50d @
        
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