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Old 09-10-2012, 10:10 PM   #1
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Default Stutter/Engine cutting off

Having an issue here and cant seem to figure whats going on.

First mod list:

-Mspnp
-8.8 supertech pistons
-scat rods
-ngk bk7e gapped at .045 with COPs
-15-17psi
- 600 cc injectors running corn fuel.
- tuned at about 11.5 afr
-overboost protection set at 23psi
-Map line t-ed of fpr

The issue:

It does not always happen it seems to be intermittent but when it starts it will last for a while and then will just go away.

If i punch it in 3rd gear, so a bit of load there, get to about 16psi i get a stutter like if i was hitting boost cut but not as violent. If i keep my foot on the gas it will keep sputtering until i let off.

Attached is a log. It all starts at 3072 seconds. What is strange is that RPM gets jegiddy and then all of a sudden duty cycle drops to zero and there is a lean spot right after that.

Let me know what you guys think.
Attached Files
File Type: msl Stutter 1.msl (43.0 KB, 49 views)
File Type: msq 2012-09-09_14.13.08.msq (40.0 KB, 43 views)
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Old 09-11-2012, 10:46 AM   #2
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for some reason the msl wont open for me.

i had a issue with running rich/ sputtering at cruise speeds and it ended up being my throttle body ground. try checking that along with other ground points.
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Old 09-12-2012, 09:37 PM   #3
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Has anybody else got a chance to look at the log?
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Old 09-16-2012, 07:12 PM   #4
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anybody?
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