help with my igniton system.high hp guys step in

malloynx

Member
Mar 30, 2005
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well fella's i really need some help. i've been tuning my car on the freeway and it's pulling like a mother. here is my problem i can't run more than 22psi... 1.5bar... at 22psi the car pulls hard and fast.. as soon as i try to go above that i get serious misfires..i know with all this boost and meth the ingniton system is getting put to the limits...

running new toyota wires, champion race plugs @.27 gap..and the old 1989 coils. i did an ohms test on everything and they all passed.. were do i need to go from here.


also my car is having trouble holding an idle and when i'm cruising the car will sometimes die as soon as i press in the clutch. i have a feeling the gap is too small on my plug and the sotck coils are having trouble firing the plugs..

need help cause i wanna run more boost :)
 

supra90turbo

shaeff is FTMFW!
Mar 30, 2005
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May be time to upgrade the ignition system Mike.
Could just be at it's limit. At double the factory horsepower rating, I'd say that's damn good.
 

tekdeus

Pronounced Tek-DAY-us
Jan 23, 2006
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Definately ground the coil packs with a nice 8 gauge wire. I ran NGK 6097 plugs and after a while the misfiring was bad above 15 psi. I regapped them to .31 (I think?) and since then, no misfiring even at 20 psi. I would try regapping your plugs even smaller. If it still runs poorly then upgrade the ignition system.
 

mk3ukr

New Member
Apr 12, 2005
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Probably old stock coils are not so good anymore. My old coils arced like crazy with AEM CDI, I bought new coils, no arcing at all. Tried it at 1.7-1.8 bar with Derek's 70/30 MW injection (without CDI)
I put ground strap from battery negative to cylinder head.
Another possible reason - maybe you inject too much water for the power you make.
 

malloynx

Member
Mar 30, 2005
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IAN, it breaks up in the 5000 rpm range.. i just installed all new grounds and a fresh set of 3923's gapped at .26.

i still have a slight miss at 1.55bar. i know i need a beefier ingniton, however i'm strapped right now on funds :(