TubeDriver

Not sure if this is the correct place to post but here goes. Has anyone tried to make a custom B-pipe without resonater for the S2000? This would lose a few lbs., flow a bit better and probably not be all that loud either. A decent comprimise between a whole new cat back and the OEM exhaust.

paivag

How about also doing away with cat??? That would save some space and also wouldn't it make it alittle bit louder???

xviper

You gotta figure out what to do with the O2 sensor so the ECU doesn't throw a CEL.

TubeDriver

Well my idea was the open up the B-pipe, this keeps the car legal, no CEL issues either. The B-pipe resonator quites things down a bit but lets face it, the OEM exhaust is VERY quit. I remember seeing a diagram of the OEM exhaust and I think it would just take a straight pipe a couple feet long with some flanges welded on. You could also replace the cat with a straight pipe for less weight and even better flow.

Stratocaster

I would love to see a cut-away of the stock exhaust as well as all aftermarket ones. I have been told that the JDM spec law require a more restrictive design the US laws allow. Would love to see if it is true.