Back to AMP over the weekend. 
Only had 2 sessions for a day. Gotta kicked out with 3 black flags because of the exhaust sound over limit. I have been running the same exhaust setup for a year now, and this is the first time I got black flag here, which is kinda weird. Guess I need to change to a valved exhaust.
Managed to get the same lap time as last time with worse tires. RS4 does not have the same grip level as my old V730, but it will last way longer so for the money sake. It is fine.
Somehow the track does not have same grips as it used to, all my buddies were noticing that. idk why.