Hey im going to buy a hks hi-power cat-back for my 00 ex with just a sohc. I am wondering if i should use a stock cat or a hi- flow cat with the exhaust. Im going more for better sound Rather then hp because its just a stock motor.
Thanks

sorry if this is in wrong section

 

if the stock cat doesnt have alot of miles on it just use it.. or buy a universal magnaflow 2.25 cat to replace it if it has alot of miles on it

 

I dont have stock cat