Its the X pipe. I had the same thing happen when I tried one on a '66 2dr bonneville I had. Car had a nice deep tone then I put the X on it ( and that was the only change I made ) and it sounded like a honda when it shifted. If you have to use a crossover use an H pipe. I had an H on my 78 T/A and it made it sound just like a 5.0 mustang, when I took it off I had that nice pontiac rumble.
__________________
_____________________________
www.classicpontiacrescue.com
|