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Discussion Starter · #1 ·
I have a built D16 with K20 coil on plugs and a Haltech 550 EMS that we are hitting 430 but blowing spark at the top end, what kind of plugs do you guys run and at what gap?
 

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Formerly weebeastie
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I run the BKR7e spark plug which are the 4644 plugs. I gap them around .024" and haven't had issues at 18 psi. COP should be taking up some of the gap for blow out. I'm guessing its breaking up up top?
 
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