recommend me a jet size

[SFC]

got a bandit 12 motor with dothead , 36mm carbs stage 3 and yoshi pipe, its been running not too bad with 155 main jets but i have just replaced the exhaust system for a vance & hines pro pipe, its baffled and now bike runs a bit worse, dont want to remove baffles as its extremely load and need it for streetfighter sunday @ the raven so no time for dyno run, anyone else got this set-up and could point me in right direction ?

[kokolis]

Do a plug chop

[Fula28]

Try smaller mains, Think we ended up with 38mm headers and 38 m carbs, but jets were 148 mains. Little rich but pulled best .

Edited September 25, 2015 by Fula28

[nightrider]

didn't know a baffle was available. is it a smaller diameter then your Yoshi?

How did the plugs look.

Runs worse throughout the whole power band or.....?

[Oilyspanner]

All as above - as Nightrider has asked, is it full throttle and higher revs (mains) - more mid-range use (needle) ?

If it has a stage 3 Dynojet - remember the jet sizes are different to Mikuni  and you can't mix them.

This is the carb setting up bible.

http://www.factorypro.com/tech_tuning_procedures/tuning_carbtune,CV,high_rpm_engines.html

[SFC]

thanking you all , got it running much much better, dropped the needle to 3rd, it still seems a little rich and maybe a little lumpy down low and could do with a dyno set-up but it will get me to the raven in the morn. much appreciated for all you help