Got a 98 GSR, sotck headers and cat with Apexi WSII catback exhuast, looking to use 2.5" T1R test pipe and hytech replica headers, i was wondering if anyone would know of any fitment issues i may encounter while utlizing such components? Any advice is greatly appreciated.

 

hytech and replica headers eliminate the cat. if you wanna run that header and the test pipe, you'll have to shorten your B pipe. why do you wanna run a test pipe in the first place? you do realize that it's illegal, right?