You should probably take the same route I took. Get the spark plugs changed first, or even look at the coil packs.bfettie wrote:Ok Guys,time to pick your brains!!
I have noticed a considerable drop off in performance of late but not really had a chance to do much about it.To give you an idea I have tried a couple of Arthur's runs and average about 10 secs!! There is no 'vtec' at 5000rpm the epc light comes on sometimes more so when colder and it can have hesitations anywhere above 4000 rpm , still runs fine below that.All I have done so far is check the bungs I put in the vacuum pipes to the tailpipe valves which are still sound,so could it be the flaps and if so which ones ?
Audi can test the flaps in 10 minutes. Audi's program (like Vagcom) will monitor the flaps, and the procedure they go through will actually tell them what position they are in (as a percentage open). If they are faulty it will be picked up very quickly. Just a point, the sensor is so sensitive that it picked up a vacuum leak in my car, and I couldn't actually see the flaps moving (I could see the pressure in the gauge dropping, but only by a tiny bit).
