Just a few suggestions here before you DETUNE an American made PERFORMANCE engine. First I'd E-Mail my question to [email protected]or better yet, call them. An old nitro guy told me once that "The RIGHT glow plug for YOUR ENGINE is the one that WORKS". My opiniom is that reducing compression would take you in the wrong direction. I'm not really familiar with your particular engine and I don't see it listed on thier web page. If JETT can't help with recomendations for FUEL or a GLOWPLUG, TRY 10% NITRO with the OEM recomended OILMIX!!! IF your engine takes a LONGTHREADPLUG, try an OS TYPEF. (NO idle bar)