My Vaquero backfires bad

[Ridefree]

So I've been reading many threads on this topic and I think I've come to a conclusion .

I've only had this bike for about two weeks now and have learned that it has Rush mufflers on it and a K&N filter . I don't see a fuel programmer which would explain the excessive popping and backfiring .

I've put a marble in the hose behind the right side cover which didn't help . Should I dig deeper and check to see if the throttle body gasket has been done ? I also noticed this bike has no 02 sensor .

Is there anything I'm missing ? I do plan on either getting a Dobeck or doing the Ivan upgrade to resolve this issue .

Until then I'll just put up with it .