Currently running a custom crane cam, 2.5 inich exhaust,hsv cai,tuned memcal,triple core race radiator.
What is a good exhaust, mine is a stock 2.5 inch from holden i think. it measure 2.5 inch.
I want to get a new straight through exhaust and some pacemeker headers. What kind of power gains, if any, should i expect?
youll get heaps dude. i have asimilar set up and am getting 186rwkw