Rolex hit it right to where you will probably loose too much backpressure from the exhaust and wont be able to feed the tank enough pressure to keep her running right. I have seen some people with a similar idea but they actually reduced it down a couple sizes to help keep that backpressure going to the tank. Cool look but probably anti effective....
it runs fine and seems to be quicker but its louder sounds cool but neighbours dont appreciate it i think I'm goin to drop the tail pipes to 8mm to give it more back pressure and make it quieter
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i could go the other way an run it all in 8mm and step up on the tail pipes to keep the look
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