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I have some basic mods.

RB25 turbo.

Walbro.

Nismo reg.

3 inch decat and all the way to rear.

Old azz AFC with dials!

An E-bay I/C thats tooo big.

I live in the US (only a few miles from yhat companies store in North Carolina).

My question is, for the money difference, would I be better off to order a 3" from out of the country, and hope it gets here, or would the 2.5 inch "E-bay knockoff" be OK? If its like a coulpe of HP less then I wanna get it, but if it is no better than what I have stock then no way.

Ps. I plan on getting a 3" up pipe at the same time of course.

Pss. How large is the factory piping?

Thanks yall.

i put one of these on last night. they factory dump has a 55mm pipe (even though the flange is bigger). these have a 65mm hole, which is a 40% bigger area. they aren't the best thing on the market but they are certainly better than stock. its hard to tell what sort of perfonce gain i got as it is raining here at the moment.

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