Re: Magnaflow XL mufflers - yay or nay?
I am about to install the magnaflows with the x pipe on a 2.25 system.. The reason I chose the 2.25 was because on Clifford performance's website they strongly recommend not going larger than 2.25 as a loss of power will happen.This is referring to a set up on a inline 6, not sure what u have.
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68 GMC 2500 stepside LWB 250CI
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