Ok so update, a while ago on a cruise with some mates through the hills I may have been reving at 4000 for about 20-30 mins, note: buick engines dont like it
So I threw in some additive to stop it from ticking/knocking, worked for about 6 months and then ****ed up lol
So i replaced the engine with the VR engine out of my old car, feels heaps better
also threw on/in
-Extractors (my stock manifold was cracked so thought **** it)
-High flow cat a mate gave to me
-Corvette Servo
-Reco Trans.
-Trans cooler
(big ****, 400x180x25mm)
I'll be getting rid of my middle muffler in a couple weeks so it should sound pretty damn sweet (i hope)
Oh btw, here is pics of the extractors compared to stock
and my trans cooler compared to a 600ml bottle