Hey. Congrats and welcome.
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... However, the Jetting Calculator does not include the Predator Pipes...
If you play around with the calculator, you will find most of the aftermarket brand pipes come out about the same. The calculator will get you close. You will need to fine tune from there. Every bike is different with the vacuum Kheins (carbs).
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... Also, does changing the pilot jets and/or shims help? I need to do some more reading...
If you change exhaust you will more than likely need to rejet. Most of the bikes are lean from the factory. Aftermarket pipes lets it breath better, which makes it even more lean. At the very least, you will need to adjust the idle mix screws. Above all, remove the AI. It will save your pipes from blueing, and if you change the exhaust, you will have horrible backfiring with the AI on the bike.
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One other question, with the Freak conversion kit installed, can I still mount the graters?
There are four of five flavors of this kit. The one from Brent will accept the cheese graters.
http://www.newspeedmaster.com/html/airbox_removal_kit.html
I don't have any experience with the kits...
peace~
