Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Exhaust leak/cat ?

Originally posted by FreeShyne:

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Originally posted by JonnySVT:

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Quote:

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And while I'm posting, I might as well ask if replacing the small 2.25" piece of stock exhaust that is left between the cat and catback with a piece of 2.5" will make any, if small, performance gains?

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Not if you still retain the y with the 2" pipes at the back....

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But that is a different part/issue...What does that have to do with the stock pipe I asked about?

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