Originally Posted by
1QwkSport2.5r
Added a Jettstream muffler to the S90, and new bearings. T
13x7 12,600/2,200
Hello 1QwkSport2.5r,
What Jettstream muffler are you using? I have the red 90 size on mine. Turning the same rpm with 0 and 5 percent nitro, Thurder bolt R/C long idle bar glow plug. Engine runs extremely good. Super Tigers are excellent engines.