A4 1.8T Stumble Under Boost
#1
A4 1.8T Stumble Under Boost
I have a 1999 A4 with a 1.8T. It has a stage 1 chip upgrade by APR. The car runs great except under near to full boost when it stumbles and misses a bit. As soon as I let off a little the car runs normally again. The car has about 210,000 mile on it. If anyone has any ideas as to what is wrong I would greatly appreciate it. Thanks!!
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