I fired mine up after installing the long tubes and it sounded sick, and not sick in a good way. Yours didn't sound weird when you let off the throttle? Wasn't until I had the exhaust all the way out to the back before it sounded good. Backpressure needed? I don't know. I keep meaning to do an audio clip of mine.


Tradin' up dimes for nickels...
'`'`'`'`'`'`
My \'65 Chevy C-20