have a civic hatch with a b16 and have a jdm sir intake manifold right now, i was curious if i will see a good hp gain with a skunk 2 manifold. also i cant remember where i have seen this but i need a test pipe that has a resonator so the exhaust wont be as loud, if you have seen it let me know what company it is.. thank you for your help.

 

i would use skunk2 and the test pipe your talking about isnt a test pipe, its called a high flow cat

 

allright i found the test pipe thats resonated (what i meant earlier) from tr1..... cheap too and real nice!