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[indus09]

I HAVE A CIVIC SI SEDAN I WANT TO INSTALL A DC SPORTS RACING HEADER Part Number: DCS-HHR5523 AND A DC SPORTS EXHAUST SYSTEM Part Number: DCS-SCS7034. IS THAT ALL THAT I WOULD NEED OR DO I NEED TO PURCHASE A TEST PIPE OR HIGH FLOW CAT TO GO W/ IT? :oops: SORRY IM IN THE LEARNING PROCESS.

[lilricki]

I HAVE A CIVIC SI SEDAN I WANT TO INSTALL A DC SPORTS RACING HEADER Part Number: DCS-HHR5523 AND A DC SPORTS EXHAUST SYSTEM Part Number: DCS-SCS7034. IS THAT ALL THAT I WOULD NEED OR DO I NEED TO PURCHASE A TEST PIPE OR HIGH FLOW CAT TO GO W/ IT? :oops: SORRY IM IN THE LEARNING PROCESS.

you dont HAVE to have a high flow cat... using the stock one will work but it will restrict airflow a little and then make the exhaust kinda pointless

[ANEWSOM@MRSYSTEMS.COM]

Run a test pipe if you can get away with it. Depending on what other mods you have done a test pipe will give you much better upper RPM power.