well i found a great deal on some MAC Mid Tubes and just wanna kno what kinda gains i can expect with what i got. custom true duals !cats, with magnaflow mufflers and a completely redone intake.( K&N CAI, Granatelli MAF, Vortec Elbow 58mm TB and a Hypertech Tune.)
I appreciate it. debatin on if i should spend the money on these.

 

I have a pair of MAC MT, but not running true duals, running a Y-pipe. Are you doing the work yourself? Took me and my friend almost 24 hrs straight (including coffee breaks/ lunch dinner breaks) but hey only paid 250 bucks for the headers. didnt want to fork out 500+ for someone else to put in. Anyways i knoticed quite the power gains. The car runs smoother accelerates much faster, and is much louder. Actual numbers i do not know yet, havent dynoed it. Oh and if you do get them, be sure to get some heatshield tape for your wires, i had to wrap three. anyways good luck, hope you like them.