This is my first post here, so firstly hello everyone!
I'm scratching my head this week as my 07 Audi S3 has come back after a whole week in the dealers. The car had a hesitation when accelerating in 3rd/4th/5th and 6th gear over 5,500rpm.
I checked the car and visually all looked in order.
I had a Forge diverter valve and Carbonia air intake / filter so my dealer basically washed their hands and didn't want to know. Paperwork read: "Car modified, therefore no further investigation undertaken" (!)
I have carried out my own checks and found the DV was stuck (Took me 1 hour to find the issue, not 1 week). However having changed back to an OE DV I have found this has not resolved the issue.
I have subsequently removed the negative battery terminal to hopefully allow the ECU to re-adapt. I will then try again tomorrow.
Any ideas or words of wisdom??
I haven't been able to log for error codes yet but aim to get this done tomorrow.
Just one other thing to note, I had to have a front damper changed as it was defective (at 8400 miles). Not a major issue, but something to keep your eye out for.