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Coil Dwell on stock ECU...again

Old Jan 18, 2013 | 12:15 PM
  #106  
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Anthing for 88570008 ?
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Old Jan 18, 2013 | 01:24 PM
  #107  
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I'll look and see if I have anything or can find it easily.

Aaron
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Old Jan 18, 2013 | 02:04 PM
  #108  
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Originally Posted by JohnBradley
I'll look and see if I have anything or can find it easily.

Aaron
thanks Aaron
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Old Mar 16, 2013 | 05:21 PM
  #109  
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Originally Posted by JohnBradley


Bump 12.89 to 16.42 up till 12.89 matches the 11.72 voltage with the value 69. All I have done to run .020 and 38psi. The last 2 tables are left completely alone, just the first one.
I've done this but I still get some breakup at 30 psi. I have the Spoolin Up COP. I've tried the dwell reduction too and that also breaks up. I haven't tried both at the same time because I don't understand it enough.

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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Old Mar 16, 2013 | 05:27 PM
  #110  
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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?
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Old Mar 16, 2013 | 05:45 PM
  #111  
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Originally Posted by JohnBradley
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?
Thanks Aaron!

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.
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Old Mar 17, 2013 | 01:04 PM
  #112  
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Fixed.

Plugs were bad. Installed new plugs and got up to 31.5 psi this morning (45*F) and no break up!

I'm using Aaron's settings for ignition charge time.
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Old Mar 20, 2013 | 03:29 AM
  #113  
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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.

Last edited by merlin.oz; May 24, 2015 at 03:29 AM.
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Old Mar 20, 2013 | 08:34 AM
  #114  
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Originally Posted by merlin.oz
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.
.7mm is around .027" for the spark plug gap. That seems pretty big. What's the max psi you can run with this gap? I'll give it a try as my blow out came back after about 100 miles.

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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Old Mar 20, 2013 | 10:20 PM
  #115  
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I cannot read your settings on that screenshot.
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Old Mar 23, 2013 | 05:09 PM
  #116  
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Definitely mechanically related.
Spoolin COP, BPR8ES plugs at 0.7mm, 35psi and no breakup.
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Old Mar 23, 2013 | 05:12 PM
  #117  
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Originally Posted by Benja
Definitely mechanically related.
Spoolin COP, BPR8ES plugs at 0.7mm, 35psi and no breakup.
I should have updated. I'm good now. I replaced my plugs with the ones you're using and 2 days so far without any break up at 31 psi.

Which method are you using for dwell?
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