i beleive it's 25feet from the side of the plane and i think it's 94db limit!!! what happened this year at joe nall was the guy who lives closest complained of the noise. i know there were several guys with 1/3 scale warbirds that were rippen the props doing low flybys wide open!!! so know we are really having to watch the noise we make!!! i know the jet rally was cancelled and i think it was cause of the jets being so loud!!! i ment nothing by the sound remark i made. but the way housing devolpments are getting closer and closer to our feilds some of us may someday be force to follow the noise rule. i know my feild is on a old dump site and of course they can't build houses any where close to us so i feel we are pretty safe!!! i just don;t want to spend all the $ for a canister setup i know it will be quiet but still thats alot $!!!! i fly imac and my extra is for that only and with some contest now having noise restrictions being inforced i may have to get canisters someday!!! but till then i love the sound of the slimeline pitts muffler, which mine is pretty queit cause it has the smoke system inside it to baffle the noise alittle!!! but right now i only have 4 flights on the motor so it's still pretty fat on the low end so if spits and pops alittle right now but it still is making great power!!! i can't wait to see the power is make after 4 or 5 gallons run through it!!!!

Mikey