my puch has had a non existent low end for awhile and i've tried everything and have come up empty. so, i decided to loose the hi-flow filter and put the stock one back for shits and giggles. well, problem solved. too much air flow. low end is back, moped wants to get up and go! only now... opposite problem. i've lost a lot of that high end power. i've been running a 15mm bing, 15 intake, proma gp. jetted at an 82.
before i ditched the filter, i was hitting about 35-38. now, i'm down to about 30-32... what the heck?! is this normal? also, noticed that sometimes it wants to do around twenty, top speed seems to vary alot. is it not getting enough air now? any help, suggestions appreciated. thanks -Hayden