My brother has my old setup D16Z6 turbo 16g doing 15psi daily & S200 tuned already with msd ss external coil.

It seems to misfire only at idle and after vtec point. I've tried to gap the plugs down to .25 and it misfires less after vtec point but misfires during idle like once every 40-60 seconds. If I increase the gap to .35 the idle is "perfect" with no misfires at all, but after vtec point it misfires like crazy. I know the bigger gap is getting blowen away but why is the tighter gap still having misfires at idle and after vtec point. If you drive the car without passing vtec no misfires at all only at idle if the gap is .25

Has anyone had this problem?

 

I had a similar problem it was the tune at fault even got the full MSD kit to attempt to fix the problem made no difference it was the tune...

Tighter gap smaller spark harder to ignite the mixture at idle.

 

i thought that tighter gap make stronger spark?

 

bump for some help

 

take away 1-2 degrees after VTEC
see if that helps
IMO is more tunning related (timing)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LilCivic04 &raquo;</TD></TR><TR><TD CLASS="quote">i thought that tighter gap make stronger spark?</TD></TR></TABLE> Less likely to blow out under heavy load but obviously not as big a spark as plugs that have a wider gap.

 

Im new to this whole forum scene and i was wondering if anyonw out there could tell me what are ALL the nessesary components for a turbo charged D16Y8.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMedEK &raquo;</TD></TR><TR><TD CLASS="quote">Im new to this whole forum scene and i was wondering if anyonw out there could tell me what are ALL the nessesary components for a turbo charged D16Y8.</TD></TR></TABLE>

Turbocharger, cold air intake, and a Mugen chip. You'll be all set.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMedEK &raquo;</TD></TR><TR><TD CLASS="quote">Im new to this whole forum scene and i was wondering if anyonw out there could tell me what are ALL the nessesary components for a turbo charged D16Y8.
</TD></TR></TABLE>

jacking this guys thread and asking a ridiculous question.

do some research. (ie Forced Induction FAQ)

 

bump

 

i had the same problem. it was the gap and perhaps the tune. im gapped at .28 right now. before i was at .32 it was misfiring later in the rpms. if the gap still doesnt solve ur problems, then im willing to bet it was in the tune bro.

 

it seems like it's your tune

 

check your IM's dude!