RS4 only 263whp flat from 6k rpm ?!?!
Carbon Buildup caused the below! This is a serious problem, but easily checked.
The simple way to test is:
1. Drive so you can get into second gear.
2. Put your foot flat, and feel the car pull.
3. If you don't have a second burst of power around 6k, and the car revs quicker, you have a problem.
Update 25/07/2010
The engine is now being stripped by Audi to find the ongoing cause of the carbon buildup and retarded timing.
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Firstly, Hello everyone. I'm been reading these Forums since January this year and it's a great source of information.
My name is Mal, and I'm from Sydney Australia. I've owned my RS4 Cab since January. It's a great car, and even more special here given Australia only received 26!
Anyway, here is my problem. My RS4 only produces 263whp from about 6k and stays flat to 8k. It's very odd and something is obviously wrong.
Can anyone provide any suggestions about what may be the problem. See RS4 Dyno Graph below.
A little extra info:
1. Car seems to ping at random (but always used High Octane (98 in Aus = 93 in US). It doesn't only happen on high load, it can happen at any time.
2. Intake Manifold Flaps checked by Audi and they seem to move ok
3. Timing Advance is only 9-15 degrees at 6k rpm while under load (checked on VAG tool)
Any help would be great.
Thanks, Mal
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