I have a problem which appeared this morning on the way to work.
The car drives normally until i hit about 4000RPM then the boost seems to be very lacking and the normal *kick* i get wasnt there.
No lag or cutting out or hesitation just no power.
And it hasnt happened before now either.
The only thing that has changed is that when i went to fill up at my usualshell station the other night it was closed so i went to esso and put 97RON in instead, it has run for 3 or 4 days on it without any problems.
Car is a 2001 S3