Reviewed By Daniel G (LONG BEACH, CA) Reviewed for a 2001 BMW 3-Series —11/4/2017 8:48 PM
My mechanic had told me about the performance, sound, and increase in gas mileage. Well, I don't know about the gas mileage.....but the sound is incredible! Performance, I feel a little increase. Overall, I truly think it's worth the price and time to install.