Plugs, CDI, Dwell Time Improvments
09-27-06, 01:31 AM
#1
Senior Member
Thread Starter
Plugs, CDI, Dwell Time Improvments
Been having some issues with fouling lately.
First on the dyno running race gas it would miss at 15 psi sub 11.5 afr,
then today I noticed on pump gas that it was missing bad around town at 12-13 afr's but, not boost(sometimes it's hard to tell unless you see it on the dyno).
I leaned the round town afr a tick to clean them up but , can't figure why the are fouling in that range.
Anyway
I have fresh NGK 9's all around.
FC 1000 CDI
Dwell Time at 4.1ms
No AI system yet.
Think changing the dwell to say 4.5 would help, I don't want to fry the coils though with the CDI added?
Maybe try some platinum NGK's?
I also wonder if my dip in power post 7,000rpm is related to the dwell time/ignition or just because it is a stock port.
First on the dyno running race gas it would miss at 15 psi sub 11.5 afr,
then today I noticed on pump gas that it was missing bad around town at 12-13 afr's but, not boost(sometimes it's hard to tell unless you see it on the dyno).
I leaned the round town afr a tick to clean them up but , can't figure why the are fouling in that range.
Anyway
I have fresh NGK 9's all around.
FC 1000 CDI
Dwell Time at 4.1ms
No AI system yet.
Think changing the dwell to say 4.5 would help, I don't want to fry the coils though with the CDI added?
Maybe try some platinum NGK's?
I also wonder if my dip in power post 7,000rpm is related to the dwell time/ignition or just because it is a stock port.
Last edited by 89t295k; 09-27-06 at 01:35 AM.
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