RE: Speed Freaks Wanted- Over 150 Members already !
The muffler is the A1-50. Also what is a good needle setting on this thing. Engine is new so never ran. I fired her up you late night with 15% cool power and OS 8 plug and 10x6 which is all I had. Seem to run great with thr 1/4-1/2 open but when open up full it wants to cough and die. Is this because the engine is not broken in. I have the needle 2 turns out.