I was gone for a couple of days and couldn't reply but wow! I had a cai and magna flow with NO tune and I could notice an hp gain. That's why I went with a newer model and low mileage. I am going to put in gears, LSD, headers, cai, magna flows, etc. but I need to wait a few years before I can touch the exhaust.
2012 FORD MUSTANG
V6 3.7 AUTOMATIC PREMIUM
DUAL X-PIPE MAGNA FLOWs
NOTHING TO BRAG ABOUT YET THANKS TO CALIFORNIA HIPPIES WHO WOULD RATHER POLLUTE THE AIR WITH WEED RATHER THAN ALLOW ME TO PUT POWER PARTS ON MY CAR.