Got to agree totally with TSawyer on this. I have several of these great, reliable, inexpensive engines. I am using one a Cermark Pitts byplane with a Pitts muffler, one side sealed with JB Weld and a small hole drilled for drainage. This allows the aftermarket muffler to build enough back pressure on the fuel tank to feed the engine at low throttle settings. The other one I have on a FunWorld 3D 120 with a stock muffler. I am using an APC 17X6 prop on both planes and like the instant throttle response running Power Master 5% nitro fuel. One thing the manual does not mention is that you can adjust midrange on a SuperTigre engine by moving the fuel nipple around to change the angle on the spray bar. At my altitude (about 880 FASL) setting the fuel inlet nipple so it is pointing down towards the rear engine mounting hole on the crankcase, seems to work best. I also have a wonderful OS 1.60 FX that costs much more than the SuperTigre. The ST2300 almost has as much power as the OS on the same fuel. If you have any further set up questions on the 2300, feel free to send me a private message.

Have a great Thanksgiving!!