good or bad having a jdm dc 4-1 run into 2.25" exhaust? will running this give me any more performance than just running the 2.25" dc header into the exhaust ?

i will be running a straight pipe from the header back to the axle back! no cat!


[Modified by integra121083, 9:34 PM 3/25/2003]


[Modified by integra121083, 9:35 PM 3/25/2003]

 

I think the gains would be minimal if not, none. Save yourself the trouble and stick with the normal 4-1 if your exhaust and cat aren't 2.5".