motor Shuts off above 18#

[Spoolnsquirrels]

So my issue is anytime I'm at the track and i try to run more than 18# of boost the motor shuts off!!!

Is there something in the software that would cause this? My OS is 3bar SD. unfortunately when i drive on the street i never get to 18# due to lack of traction.
After the motor shuts off I can restart with no issues. It has been doing this since I switched to SD 2 years ago, so that is what makes me think its in the tune. And the amount of time it has been I have gone through anything that could be mechanical or electrical ie wiring. also When I am out in Mexico doing some roll racing I can get it over 18# and as high as 31# but I am only running 3rd gear doing that.

Bellow is my tune and last log that the motor shut off. the area of the shut down on the log starts at 1:07 on the time stamp and goes to 1:22

if any other info is needed please ask.

0411 ecm
running a 6.0 w/forged rods and pistons on E85
I am running E85 but still using pump afr wide band
4L80e trans

[kevin87turbot]

So my issue is anytime I'm at the track and i try to run more than 18# of boost the motor shuts off!!!

Is there something in the software that would cause this? My OS is 3bar SD. unfortunately when i drive on the street i never get to 18# due to lack of traction.
After the motor shuts off I can restart with no issues. It has been doing this since I switched to SD 2 years ago, so that is what makes me think its in the tune. And the amount of time it has been I have gone through anything that could be mechanical or electrical ie wiring. also When I am out in Mexico doing some roll racing I can get it over 18# and as high as 31# but I am only running 3rd gear doing that.

Bellow is my tune and last log that the motor shut off. the area of the shut down on the log starts at 1:07 on the time stamp and goes to 1:22

if any other info is needed please ask.

0411 ecm
running a 6.0 w/forged rods and pistons on E85
I am running E85 but still using pump afr wide band
4L80e trans

I see a few issues. It's running out of injector at 6800 rpm/219kPa. However, it's still pretty rich up until it runs into the issue.
Load the attached tune file and see if the issue still exists.spring 22 e85 w20 timing 80deg 28x10.5 KW MOD.hpt

[Spoolnsquirrels]

I see a few issues. It's running out of injector at 6800 rpm/219kPa. However, it's still pretty rich up until it runs into the issue.
Load the attached tune file and see if the issue still exists.spring 22 e85 w20 timing 80deg 28x10.5 KW MOD.hpt

Thank you for the file , I tried to run it but unfortunately no change. Just curious what was the change on the tune?

[kevin87turbot]

I make a couple small changes, but primarily reenabled some of the DTC's. Does it throw any codes when the issue occurs?

[Spoolnsquirrels]

I make a couple small changes, but primarily reenabled some of the DTC's. Does it throw any codes when the issue occurs?

sorry been a while, got busy at work.

No codes

[Alvin]

Have you checked crankshaft end play?

The trans can push into the crank.. Moving the crank forward. causing ECM to loose crank signal.. car shuts down. I've had it happen with a couple cars with one engine builder.

If not that.. maybe its a ground or harness issue that is only showing up with 1st hooks up.

[Pekka_Perkeles]

So my issue is anytime I'm at the track and i try to run more than 18# of boost the motor shuts off!!!

Your cylinder airmass hits the hard limit of the PCM. It's about 2.2x grams; I don't remember the exact value.

You have to scale your tune to overcome that limit.