immediate stumble upon acceleration

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black magic

Black Magic
Joined
Jun 24, 2011
Messages
64
i have a 3in maf lt1, 340 walboro fuel pump 43# injectors, 3in downpipe with external wastegate, extender extreme chip, maf translator gen 2. when i accelerate my car just stumbles and the check engine light goes on then turns off, and no MAL on scanmaster please help!!!!!
 
post your sm readings at idle (warm) would be a good starting point.
 
Check your volts when it starts to stumble.

Check to make sure your chip is seated properly as well.

Verify all your settings are correct in the GEN II.
 
Mine was a fuel pressure fix. Sat under the hood and adjusted the pressure up and down until the stumble was gone. I also have 120 lb injectors, which Eric from TT said they were very picky on fuel pressure. You don't have these, but worth a shot.

Sorry, didn't read the full post(LAZY) I didn't have a SES light.
 
X2 Trace the positive battery cable down to the starter. Particularly by the headers.

Rick
 
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