Ok so I put my gytr pipe in and put a 145 main jet in. I follow the instructions for the kit and it says to leave everything stock when adding the pipe and uni filter, while leaving the lid on. So I put a 145 in (stock is 142.5) Anyways the thing is backfiring like crazy when I rev it wot. Then there is like no power at the top end once i hit 3/4 trottle to wot there is no power band or oomph its all flat and it takes forever to get up to speed. So I put a bigger jet in there 147.5. Same thing happens. Backfire and no throttle past 3/4. So im kinda stumped here. Can anyone help me figure this out. Thanks.

 

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