Bonneville America Forums Forums Technical Forums Performance Mods carb main jets/induction mods

Hi all,I have a 2006 BA 790,fitted with the sai removal kit and short drag pipes,no air induction mods,after reading the posts on here,what is the suggested size of jets for rejetting?,if in your opinion it is needed,and would it also be worth modifying the air induction?,thanks in advance for any replies/advice.

Hi, you can use this jetting calculator to get you pretty much where it needs to be....

http://www.bonnevilleamerica.com/dinqua/friar/

I've got pod filters on my 07 America, A.I removed, cocktail shakers style exhausts, TTP Firestarter & 155 mains & 45 pilots with mixture screws 2 turns out.

You need to open the intake to realize the potential gain from less restrictive exhaust. That being said you need some restriction in the exhaust to give you some back pressure. You will need to rejet accordingly.

Thanks,I have already decided that I want to go down the line of pod filters,they look old school,I have since made some lollipops for the pipes,which has given me a little back pressure.I will have to make a start on induction mods and see how it goes,thanks for the advice.