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i just bought a set of PSI stockblaster pipes for my 93 xlt and i dont know if there is anything else that needs to be done besides jetting up 3 sizes. maybe turn up the oiler a bit? i have a chart that shows different weights than stock, but i dont know if they are supposed to be heavier or lighter. this chart is for a 95 xcr 600 and says stock rpm is 8100, and with these pipes, should be at 9100 rpms. right now my sled has 200 main jets, so im getting 230's for it. any info on what to do to my sled to make it a pull and go sled with these pipes is greatly appreciated.