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Old 03-06-2013, 09:01 PM   #2
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The higher quality aftermarket kits use mandrel bent stainless steel tubing vs crush bent steel/ iron/ non stainless steel/ aluminized steel tubing that your local exhaust shop would usually use which constricts the flow at every bend and would be worse than stock.

If you can find a shop that has a mandrel bender and can use good quality stainless pipes it might be ok, but most just use the cheap tube benders that crush or crimp the pipe in the process.
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