Reviewed By Michelle M (Mayer, MN) Reviewed for a 2004 Pontiac Grand Prix —10/23/2013 8:27 AM
My car has 200,000 miles and my old cat was in need of replacement. Was getting bad mileage and wouldn't even shift past 4k. A stock factory cat for my car was $677 from the dealership- I found my magnaflow for less than half the price. It only took the shop about 45 minutes total to install the direct-fit cat(no problems). My car now runs better than it ever did, no check engine light, my mileage is up, it revs up to redline and I can definitely feel the difference in response and power.