I just recently ordered my Jspec 4-1 vibrant header. I was wondering if any of u guys put this on ur car because i was wondering what length of test pipe should i get to fit them perfect? my exhaust is Dc sports...i was debating whether i should get 2.5 in front and maybe 2.25 in the rear because i dont know the size of my dc exhaust...pls let me know about the length of test pipe that i need

 

whats the year of your car, and do you have ls or gsr

 

my car is 98 gsr?

 

Id also consider thinking about bottle-neck youll have by mating a larger diameter header/testpipe to a smaller b-pipe

 

i really don't think it is going to make that big of a difference. i agree it is not optimal flow, but i would still rather have a jdm style header

 

17" should be the correct length with 94-99 GSR midpipe and JDM length header.

Or you can just buy the Omni JDM spec test pipe and everything will be covered.

http://www.omnipowerusa.com/Pr...e.asp

 

if i buy the Omni one, will that bolt on directly to my dc sports exhaust? i dont even know if my dc sports exhaust is 2.5? I know for sure that my Jspec vibrant header has 2.5 out let...so more feed back pls