I have a white bros e-series slip on and I run a uni filter. The guy who runs our local race shop said not to re-jet for that pipe but it had let off back fire like it was to lean he also turned out the air screw one full turn. I called White Bros and they said run 155 and 40 which is the same jetting jmoney45 uses with his big gun and it runs fine. I'm also going to get an outwear and go without the lid. Any suggestions considering I'm no mechanic?

 

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