i have 2 evo 10gx engines i am having the same problem with both engines, both ran great during break in period, now my issue and it is with both engines is during warm up every thing is fine engines idle take throttle fine until i try an go wide open than the sputtering starts both seem to stall on first take off (getting good at dead stick landings!) and don't want to hit the high rpm's, i have done all the recommended settings,fuel line,clunk movement exhaust pressure i am useing a 11x6 prop a 7.4 lipo for my ignition ign module is placed as to not get any emf's from anything ive turned high idle both directions only to get the same results i have held the nose up and down while the plane was running no change any help would be greatly appreciated!! i have a sig lt40 and a sig kadet sport as well when i can get them to semi run right there fun planes but the sputtering an stalling is getting real old fast!!!!!