Well that’s hard to say because I drilled my fuel channel up to 2,5 mm, so that means I can run on a smaller main jet than what I would have done on a original carb. The idle jet needs to be increased, so I bought a set with bigger idle jets from Pinasco. But I can’t say a exact jetting, it depends on your setup, you have to try to find the best setup. And for best result you probably have to change your gear ratio.

@@zeshanshani6236 sip scootershop

No, it’s a big disadvantage of this exhaust that you can’t remove the wheel

Can’t say I had that issue really.

And thats is exactly the case with these sort of exhausts. I lost my PM exhaust that way. I consider a revolver exhaust (ending the right side)@@Nordicexplorer1

Much more torque and higher rev. But too get the most of it and don’t get a flat spot in the mid range, changing gear ratio is needed.

What ratio do you use?

@@thespearofmangjinoon5855 I never charged ratio on this one before I sold it. But sip has a good article about gearbox and ratio and in this article you get information about how you calculate your ratio. www.sip-scootershop.com/download/article/1/pdf/fa6fa8d4-75db-48e7-8d72-31c6952120a1/Gearbox+Technology.pdf?contentType=application-pdf

Big thx!