Has anyone installed a Bonez Superflow Cat on a NA? (mine is a '86 base NA) Did you notice any increase in HP? If you just put on the new cat and left the stock mufflers was there any change in exhaust sound?(better/worse!) Has anyone done this and but on the Racing Beat cat. back mufflers?

 

yeah i got a Bonez Superflo Cat...sounds alittle crazy first my first impression of it was that it was kinda loud...the exhaust smokes alittle bit...til the coating burns off.but yea it sounds deepers throughtout the rev. sounds alot deeper around 3-5K..the power difference...you can tell it slightly revs just a tad faster in gear..punchin it...i think its worth the $$$$

 

I had just installed mine last week. I have a cat back...so it just made it alittle louder. I did notice an increase in power thou.

 

my friend has one on his 7, you will notice a little jump.