Join Date: Sep 2000
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Re: XL-7 exhaust upgrade question?
If you have to go through smog checks you might not want to mess with the converters and related sensers. So the 2.5 or larger cat back may be good. However if smog is not an issue, maybe there is room for duals. Generally the mini cats size allow them to be place closer to the exhaust manifold an so light off sooner thereby reducing pollutants quicker.
If money is not object, contact Borla and see if they have something in the works. A complete Borlas stainless header/exhaust system would be sweet. Its a shame to mess with the expensive stainless system that comes from the factory.
As far as a muffler is concerned, check out the Magnaflow mufflers (they have an interesting internet site). They are straight through and low restriction. I have one on my Samurai. They are available through Trail Tough.
If a 2" is good for the 1.3l then the larger size exhaust should be good for a 2.7l