right now i have a gutted cat on my car, would i see any performance gain by going with a test pipe? also would it change the sound any?

 

It'll change the sound to where it won't sound as "hollow". As for any performance gains, it's probably so small you wouldn't notice.

 

you probably wont notice a performance difference. the sound will be greatly approved

 

you might be surprised as to the performance gain

though might not be much I am sure it will be there


a 2 1/2 inch pipe going into a big open area will slow down the air and create turbulance. while if it is just a straight pipe all the way to the muffs you get less turbulance and as everyone else said it does sound better