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Optimal spark plug/gap for singled on 550cc injectors? The guessing game blows.

1067 Views 7 Replies 6 Participants Last post by  Boostrush
Well I've ran NGK irridium, greddy irridium, ngk 3330, ngk 6038, denso whatever whatever, and have tested gaps from .023 to .032 and nothing seems to run perfect. I havn't tried every gap on every plug, just randomizing it by guessing. What plug and gap would be optimal for a 67mm turbo on HKS twin power/AEM and 550cc injectors? So far the denso's on .027 seem to be the best but still not perfect. What do you guys run?
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i run .028 on bpu... i have a quick question...

have you had your aem tuned to your set up?
i run .028 on bpu... i have a quick question...

have you had your aem tuned to your set up?
Yes, it was tuned at .025
how old are your coil packs?
I don't think he has a TT motor
ok then what plug wires? and he still has a coil pack just not coil over:D
describe the problem, then describe your setup. for someone who doesn't want to play guessing games, you aren't helping by making us guess what you're running.
Denso Iridium IK24's gapped to .028 work flawlessly for me. I'm a 67mm with 720cc injectors, HKS DLI and VPC/AFC.
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