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Old 05-26-2002, 09:17 PM   #9
Scooby Newbie
Member#: 404
Join Date: Oct 1999
Location: socal
2000 Audi S4


Hey 8,

The studder feels like a lack of ignition or a lack of fuel. The boost stays solid at 6 psi and really doesn't move. When i get on the throttle the EGTs drop real quick, to around 1200 where they are usually around 1400-1500.

As for timing i am using the J&S ultra safeguard. I have it retarding 1/2 degree per boost starting at i guess 3 psi or 5 psi (whatever the start knob all the way clockwise is). I will try disconnecting the J&S this week and see if that changes anything.

I do think that the ecu is either pulling fuel or retarding the timing. I am definitely going to invest in a fuel pressure gauge to make sure im fine, but im pretty sure im getting plenty of fuel.

So what should i do or test??
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