Thank you for answer.
It is same PUFF with stock muffler, i just replaced silver tail.
with stock is even stronger PUFF.
Silver tail i bought in bike shop, they say it is special for savage / s40
it is not an open muffler.
what do you think if i put back original main jet who is 130, and put pilot 57.5?
i will try with choke, thank you for advice.
For choice of muffler, it is hard to find any muflers herein Europe, specialy in country as Serbia where i am living