right, i have a supercharged rs4 evo, with the 15fe engine, lets leave the supercharger out for now, but ive got big problems with the engine, the glow plug works fine, the engine has compression, and there is no head leaks, there is fuel going into the engine, the fuel still burns, ive tryed it without an exhaust and you can hear the plug burning the fuel, and those are the things needed for the engine to work, the piston condition is good, crank is fine, but still will not run!!!, ive took it to the pro's in rc shops, they don't know/cant be arsed, ive tryed sooo many settings and still no luck, this IS NOT a supercharger related problem before anyone brings that up, someone help please.

it does sound like a compression problem, though. I have had the same problem on a 2 stroke go cart engine, adn it was compression. Just double and triple check everything. try checking the carb, and make sure you have a 1mm carb opening, and no more.

(sounds like you wore out your oil groove on the piston)

Have you actually tried taking off the supercharger and just using a normal airfilter?

yes