Modern Vespa

i just bought everything i need to tune my vma1t, minus carb jets. it will be a very vanilla tune, so maybe one of you guys with a similar set up can give me advice on jets. anyways, it's a 121.1 and i bought a polini 130 kit, dell'orto 19/19 and a polini pipe. i do not want to cut the cases (and i want to be able to follow the instructions on smallframes.com) so i bought a polini rotary intake. if anyone has a similar setup, i would like to know what jets to use, so i at least have a starting point.

you should of got the DR 130 Kit from American Scooter Center that way its more stock set up, and the Polini is a bit more advanced and you really need to cut the case so more air gets in and out ,

and you might want to go with a bigger carb does your intake have the reed valve??? or is it just the straight pipe ??

I rocked the Polini kit for a long time but I had to swich to a bigger malossi carb

also went to Electronic Ing. helped alot

That's a great set-up you've got there. You'll want to run anywhere between an 80-90 main jet depending on if or how you modify the airbox. Without modifications, it will be closer to 80. I take about half the steel-wool type wadding out of the airbox, and drill a couple extra holes in the airbox. If you do that, you will likely be in the mid to upper 80s range. The airbox mod frees up some more free power.

thank you for the info. i looked on your website. there is a polini air filter for small frame vespa 19/19. is this air filter better than the regular air boxes? it does look cool.

It's more of an air box. There's no filter in it. I would just modify the one you have.