I had the local speed shop install these along with a steeda cold air intake and a dyno tune. With the existing magna flow street cat back system I already had in the car this set up put down 425hp and 383 tq to the rear wheels. The sound is amazing and the car is a beast now compared to stock with just a cat back exhaust. The shop said they were a little harder to install compared to the big name brand for twice the money, and the power Gaines were the same compared to other owners cars.
Good looking parts, well made, on time, good value. Being in Hawaii ,as with most things, cost me to install ($840.00) Tight squeeze on passenger side install making contact with firewall causing a crazy vibration felt through the car when driving. Installation mistake not JBA's. Definitely do notice a bit more power when I hit the pedal & happy with the improved sound. Would buy again. Just gotta research who I seek for installation.