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Breaking up past 6000rpm pLz HeLp

 
Old 05-11-2019, 11:04 PM
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Default Breaking up past 6000rpm pLz HeLp

Hello,
Car is a 97. Stock motor. Running a gt2554r at roughly 10psi. Mustang gt500 injectors. BKR7E plugs gapped to .025. Stock coil packs

The issue: Car runs great untill i reach roughly 6000RPM at which point it starts to break up. I swapped out coil packs with a known good one and same issue.

I'm trying to attach a log of this with my tune.

Any help is appreciated. Let me know if there is something else I should check
Attached Files
File Type: msl
2019-05-11_10_modified.msl (882.7 KB, 6 views)
File Type: msq
CurrentTune.msq (117.3 KB, 7 views)
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Old 05-11-2019, 11:36 PM
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Originally Posted by salamons View Post
Stock coil packs
I think I found your problem
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Old 05-12-2019, 10:19 AM
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Originally Posted by WigglingWaffles View Post
I think I found your problem
Possibly but I run 230 kpa with stock coils on my 97. BKR8EIX at .025 gap.

Edit: Status2 is showing spark cut. You have a setting some where that is cutting spark

Last edited by SpartanSV; 05-12-2019 at 10:33 AM.
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Old 05-12-2019, 10:41 AM
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There it is. For whatever reason you drop your rev limit past 180 degrees. Your WOT bypass isn't working because you only had 99.*% TPS in the log.


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Old 05-12-2019, 11:52 AM
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Very good find! But I'm confused about how you found it. When I look at his spark advance, there is no spark retard. I looked at every SPK graph and there are no modifiers.

I ask because I'm seeing a similar thing.

OP: Do you hear the a BBBBBRRRR sound out your exhaust (which I believe is indicative of spark blowout)?
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Old 05-12-2019, 11:58 AM
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EDIT: I missed the STATUS2 comment.

So it cuts the spark but doesn't report it in the graph?

Ugh... so I've got spark blowout and he doesn't. Great, back to the drawing board.
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Old 05-12-2019, 01:14 PM
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Many people run stock coils around 10-14 PSI though... Or am I wrong?

I know the stock coils are weak but I thought they were usable around that boost/power level.
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Old 05-12-2019, 02:33 PM
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I ran stock coils at 15psi all day long. Using a 2560.
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Old 05-12-2019, 10:00 PM
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I did not hear a "BBBBBRRRR" it sounded more like little misfires, exactly the same as when my wrx had a bad coil.

Thank you for spotting that I forgot I was playing around with the rev limiter -.-

I will change the limiter and see if it solves the issue. Will report back when it stops raining.
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