Hi there - Just got a B8 S4 Avant (S Tronic). Is there any way I can find out if it's been chipped (Without putting it on a dyno, etc) ? Reason being - I test drove a 2011 S4 Avant at a dealer one week before I got my late 2009 S4 Avant. There seems to be quite a difference in performance - my car just seems extremely aggressive compared to the test drive.
