Reviewed By Jonathan V (Saint Paul, MN) Reviewed for a 2003 GMC C/K 2500 —7/6/2010 2:59 PM
I've got a '97 Sierra with a 5.7L V8. Put a cold air intake on it, and that made it pretty fast. This exhaust kit is everything I've ever dreamed of, and then some. The noise level is perfect-not too loud, but not too quiet. I've only heard it from the cab, but I'm pretty sure that on the outside, it grabs attention. Now, with that classic American growl, it's stupid fast. Very smooth, engine runs so much better now. Fuel economy looks extremely promising... haven't had much time to get a good reading. I've just got to find some F-150 drivers that are brave enough to race!