[Nicky92]

I have a custom exhaust shop down the block from my job, they do custom mandrel bending up to 4". They are the best around, they do insane work.

I want to cut the 2.5" tapers off the downpipes, install flanges there. Then have custom made 3" piping all the way out. I am catless, with vibrant resontators and borla mufflers, obviously have to change them to 3" also.

Would I be seeing any gains from this? Or would it be too much work for what it'll gain

I am about to be running MMP inlets, i am FBO, meth, E85 with walbro 255.

[einbruch10]

You won't see any difference with the stock turbos.

[Nicky92]

Didn't think so

[einbruch10]

The turbos are really small anyways. Not saying they don't perform, but it wouldn't hurt to have a 3" exhaust in the short term if you plan on switching to bigger turbos.

[Mike@N54Tuning.com]

Originally Posted by Nicky92

I have a custom exhaust shop down the block from my job, they do custom mandrel bending up to 4". They are the best around, they do insane work.

I want to cut the 2.5" tapers off the downpipes, install flanges there. Then have custom made 3" piping all the way out. I am catless, with vibrant resontators and borla mufflers, obviously have to change them to 3" also.

Would I be seeing any gains from this? Or would it be too much work for what it'll gain

I am about to be running MMP inlets, i am FBO, meth, E85 with walbro 255.

I doubt you will see any appreciable gains on stock turbos. The dual 2.5" exhaust flows pretty well as its a true dual exhaust.

Mike

[Jeff@TopGearSolutions]

Not sure if anyone has really done it to know for sure on the gains.

[Fast35i]

Just run the 3 inch pipe with the Vibrant resonator only
(No mufflers)

[zeenon53]

If your still running the stock exhaust you should. It's the only thing missing from your signature.