I have a high boost jrsc with the s300 ecu and upgraded injectors the whole kit, anyway im flustered on the exhaust. Is it the same as a turbo, do i need 3" piping for 10 psi or just 2.5? I dont need to run a cat so my options are completly open but i dont want it to be way to loud? Also what headers? i have no experience with forced induction so im rather clueless to the benifits of the exhaust system.

 

3 inch will make the most power, but on a blower car, it will be very very loud. 2.5 inch with a couple resonators will be your best bet. Turbos dont like back-pressure at all, superchargers are not as critical.

 

mine ran great with 12psi and 2.5in rsr gt2, but it was extremely loud. get a long resonator whatever you do.