Audi=No fault code, no idea
A couple of points. by running on two rollers you are not going to get a true reading because your ignoring part of the drive train that saps power ie the prop and diff.
It sounds to me like you are reaching the limit of something like the flow of the the Cat/Exhaust/intake/filter....what rpm is it topping out at because thats more relevant than the bhp. We had a simular problem with mine on a 4WD roller, it topped out at 255 bhp no matter what we did and came to the conclusion it was as much as the cat would flow. We could move that 255bhp point up and down the graph a bit and increase the Torque but it just would not flow more than 255. One other poiint, we found we could gain 10bhp with Tesco 99ron over 95ron, petrol quality becomes important when you are looking for the last 20 bhp. ( as does tire pressures etc)
Did you check you were getting full bhp beforeyou added any changes ? Cars will easily vary 10% bhp from stock after a year or two anyway so were you starting from 190bhp instead of 210 for example.
Last edited by paddy; 22nd October 2010 at 03:37.
Ibis white Revo S3 and now matching Vivaro LWB HR 2900 :-)
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