Alright since the header on the 4th gen prelude is longer... you would need to get rid of the cat if you were to put a greddy header for a 4th gen prelude into a 5th gen. and then make a custom small test pipe... BUttttttt one thing... i dont think i can get any shop to do that here (south fla) because it is against the law to do anything with the cat (that includes removing it) -i think everyone knows this- but im saying it because ... i want to know how people got theirs made?

or is their a place i can buy a test pipe that will bolt up from the greddy header to the Evo greddy exhaust on a 5th gen prelude

thanks

 

I wouldn't run a test pipe. Why don't you just shorten the mid pipe on the exhaust.