I have a stock 78 Maxi Luxe 1.5hp w/ stock pipes and 12mm bing(1/12/310). The stock jet is a #48. I just ordered a "puch bing metal hi flow filter", "puch tecno circuit performance exhaust pipe" and a set of all 70s jets from Treatland. The question is, do you thing a jump from a 48 stock jet to a 70s jet is to much? Even with the upgrades.
I know its hard for someone to tell me what jet to use but I just need to know if it is probably a 50s or 60s jet.
P.S. what happens if i use a jet that's too high?