1SikCoupe

i currently have a dx if i wanted to put in a gsr or b16 in the future what size piping should i get i heard 2.25 or 2 whats a good size and will i lose hp goin with 2.25 on the dx?

bbarbulo

iTrader: (2)

2 inches (50mm) is enough for a bolt on affair with a B16 engine that's N/A. It will be quiet and flow very well. 2.25 would be better if you go for a B18 engine. Reason being the higher displacement leads to a little more exhaust volume. However, that being said, you won't notice a big diff in power from 2 to 2.25 inches, so you may as well go bigger (2.25) in case you do go with a B18. The power difference will be neglibible, prolly 2-3 WHP depending on the model of exhaust you buy. A nice 2" is better than a crap 2.25, but if equal quality, bigger is better.

imported_toyman29

go for the 2.25 if ur gonna get a swap

lost of back pressure @ low end but hp gains @ highspeeds hehe

EK7_DriftMania

Someone told me my 2000 Ex's stock pipe was 2.25" when I was asking for catback. I never got it tough, one of my friend that had the same car, told me it was not worth it. So, all this time I thought the stock ones were 2.25"

imported_toyman29

no.. your stock isnt 2.25
even your stock muffler tip isnt 2.25