When are step colder Spark plugs needed?
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This is a discussion on When are step colder Spark plugs needed? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I have a 2016 wrx, currently on stage 2 with TIC TGV deletes and a grimspeed ECBS. Do I need ...

  1. #1
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    When are step colder Spark plugs needed?

    I have a 2016 wrx, currently on stage 2 with TIC TGV deletes and a grimspeed ECBS. Do I need step colder spark plugs or am I good with the stock ones?

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  3. #2
    Registered User ConBroMitch's Avatar
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    Personally, I'd ask my tuner his/her opinion
    "Straight roads are for fast cars, curvy roads are for fast drivers." -Colin McRae

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    Registered User Steemax's Avatar
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    In most cases you won't need them until you're making north of 450hp with a bigger turbo... You'll know if you need them, most common issue will be misfires up in the RPM band... but yest ask your tuner for a clear cut answer if you are experiencing any issues.
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    Registered User UEDan's Avatar
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    Yep tuner.
    Misfires might be gap issues. My car HATES stock heat range at stage 2 and will knock pretty badly.

  6. #5
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    Quote Originally Posted by UEDan View Post
    Yep tuner.
    Misfires might be gap issues. My car HATES stock heat range at stage 2 and will knock pretty badly.
    Quote Originally Posted by Steemax View Post
    In most cases you won't need them until you're making north of 450hp with a bigger turbo... You'll know if you need them, most common issue will be misfires up in the RPM band... but yest ask your tuner for a clear cut answer if you are experiencing any issues.
    I contacted my tuner and he said I should be fine, I haven't had any issues expect my car idiels rough sometimes but it did that stock so I think it's normal. Just wasn't sure if it was a nessasity or not! Thanks for the posts!

  7. #6
    Registered User UEDan's Avatar
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    With our boxer motor some roughness is to be expected.

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