Single carb tuning

• FG

  FRANKY Gomez

  4/17/26, 11:43 AM

  Can anyone recommend jet sizes for my single carb 750? I’m installing a velocity stack and backdraft exhaust, and I’m doing the emissions delete at around 850 feet above sea level. I’d appreciate some starting points to guide my modifications.

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  TJ Admin Staff member

  4/20/26, 8:41 AM

  @FRANKY Gomez There is not magic formula. Start with the smaller jets in the kit, begin with the idle circuit and work your way up from there. Here's a link to all the tuning info youll need to get it done right - t.ly/SZXYi

   

  DO FUN SHIT!
  Check the FAQ's here for tons of tuning info and more!! - t.ly/MA6r6

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• MS

  Michael Sparkes

  4/28/26, 2:17 PM

  08 VT750C - I'm presently into the tuning portion of my performance install kit. Right now I've got the 48 main jet and the air/fuel set to about 2-3/4 turns and works pretty decent. Still feels a little sluggish on a mid-range incline in 4th gear or to reach top speed in 5th. Going to move up to a 50 main next and work with air/fuel from there. It's a learning curve for sure.

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