hello i plan on swapping a b18c itr with the jdm 4-1 header
my question is should i run a 2.5 test pipe first and then the 60mm cat back or should i run the 60mm right after the header?
i plan on keeping the motor stock so what will happen if i run the 60mm right after the header? will i lose low end or top end? also what does this have to do with back pressure?
my question is should i run a 2.5 test pipe first and then the 60mm cat back or should i run the 60mm right after the header?
i plan on keeping the motor stock so what will happen if i run the 60mm right after the header? will i lose low end or top end? also what does this have to do with back pressure?