Hey J! The flash will work with stock cans, but it shouldn't be used with stock cans that haven't been Nast-I-fied (ie: cut to relieve that excess back pressure). Too much back pressure, the bikes systems can only do so much. The restrictive back pressure of the stock exhaust with its Cats and everything else chokes the bikes performance. It is better to either cut your stock cans like nasty to relieve some of that back pressure along with the flash, or simply do the flash when you upgrade ur exhaust.
Page III!
* Last updated by: Cblast on 9/21/2013 @ 3:23 PM *
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