I have a std c20xe engine with 150 bhp output.
In a week I will go to put a custom exhaust system.
Later I will put tb's to my car to have about 180-190 bhp.
Which diameter is better to go?
I don't want more power in the future from that.
I also like very much the mid range torque which have this engine.
I don't want to loose this power in mid-range.
Better is to go for 55mm diameter or for 60mm?
Also if I go for 60mm I will loose power until I will put the tb's?
Any opinions apreciated.