2003gt Member Apr 27, 2003 290 0 16 Brandon, MS Jan 14, 2004 #1 Jan 14, 2004 #1 i'm having the car go in for 2 1/2inch MAC longtube headers, prochamber midpipe with MAC high flow mufflers.... should see a 40 to 50 hp gain..... whoooohooo that will put me up and over the ** 400 ** damn i'm going to get myself in trouble
i'm having the car go in for 2 1/2inch MAC longtube headers, prochamber midpipe with MAC high flow mufflers.... should see a 40 to 50 hp gain..... whoooohooo that will put me up and over the ** 400 ** damn i'm going to get myself in trouble
4.6MustangSteve New Member Jun 13, 2003 219 0 0 Northern VA, USA Jan 14, 2004 #2 Jan 14, 2004 #2 A friend of mine has that setup. It's going to be :worship: