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Sputtering in 2nd Gear and above

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1stGENracer

20+ Year Contributor
1,408
3
Sep 10, 2002
Lewiston, Idaho
Ok, my DSM has been having problems with 2nd gear +. And maybe the same problem in 1st, but 1st gear passes by so fast I can't really tell. The car sputters when accelerating hard, and the fuel trims seem fine, everything looks pretty good on the pocketlogger, and it stays rich the whole time during sputtering.

It boost spikes right off when you lay into the throttle, but then it drops back down to 14 psi where I have it set. And thats boost pressure read after the throttle body.

Can you guys tell me what timing should look like under acceleration. I no timing is staying at 21-22 degrees advanced under acceleration. I've got brand new spark plug wires, and brand new NGK plugs.

I'm thinking its got a leak in the system some where, and its running to rich, what do you guys think?
 
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