Yellofever

I installed MAC SS axle back exhaust and a S&B Air intake kit on my new 2006 Mustang Gt and it seems to run extremely well! Big Difference in response and horses. Not sure whether i would need an SCT Tune? Seems fine as it is with 200 miles on Mods. No discolorization of tail pipes, no misses, just raw added power. I know a Tune might improve the setup but would it hurt not to have it tuned?

Daniel60

I have Mac axlebacks. What is a SS Mac axleback? On your tuning issue some CAIs' aren't requiring a tune. I would asked them.

bushbanger

I think he means stainless steel ...Macs are great and the more miles on them the better they sound

flewbyu

Macs sound great! I love mine. Good choice. Your on your way!