Coil Dwell on stock ECU...again
I'm running BPR7ES plugs at .020".
Any suggestions besides lowering boost?

Also, I cruise on the highway at 3500 RPM's. Does this overheat the coils bumping up the dwell?
Last edited by 10isace; Mar 16, 2013 at 05:25 PM.
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Could be other things causing the break up, water in the intercooler if its been wet around you (condensation in the tanks), bad wires, a bad cam sensor. I have yet to have coils fail on me from running them this way. How much timing are you running at 30psi and what RPM is it breaking up?
Could be other things causing the break up, water in the intercooler if its been wet around you (condensation in the tanks), bad wires, a bad cam sensor. I have yet to have coils fail on me from running them this way. How much timing are you running at 30psi and what RPM is it breaking up?
I'm guesstimating it breaks up at around 3500-3750 rpm. I'm running 5* on E85.
I'll check the plugs tonight first, then the cam sensor. We did have 1/2 foot of snow the other day.
To clarify tuning a little, for setups with spark blowout at 0.7mm plug gap ( the minimum I like to gap down too) I adjust the 12, 14 and 15 volt settings on the second table (correction factor) to 0.035 (using my scaling shown in the xml scripts).
This keeps the settings as per stock up to 2800rpm, from that point to red-line the coil dwell time reduction is not as aggressive as the stock settings.
On the stock settings, the coil dwell time is reduced dramatically at 7000rpm.
This keeps the settings as per stock up to 2800rpm, from that point to red-line the coil dwell time reduction is not as aggressive as the stock settings.
On the stock settings, the coil dwell time is reduced dramatically at 7000rpm.
Last edited by merlin.oz; May 24, 2015 at 03:29 AM.
To clarify tuning a little, for setups with spark blowout at 0.7mm plug gap ( the minimum I like to gap down too) I adjust the 12, 14 and 15 volt settings on the second table (correction factor) to 0.035 (using my scaling shown in the xml scripts).
This keeps the settings as per stock up to 2800rpm, from that point to red-line the coil dwell time reduction is not as aggressive as the stock settings.
On the stock settings, the coil dwell time is reduced dramatically.
This keeps the settings as per stock up to 2800rpm, from that point to red-line the coil dwell time reduction is not as aggressive as the stock settings.
On the stock settings, the coil dwell time is reduced dramatically.
I think I may be running too hot a plug. I'll try these settings on the way to the parts store. I'm going to buy BPR8ES to see if that helps too.
So is this how you set it up?
Last edited by 10isace; Mar 20, 2013 at 11:19 PM.
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