i have a 2005 r12x it runs good for about 30 min then goes into a limp mode(not reving over 2000rpm's) then i'll have the take the laynard off then start up again run for couple min then do it all over again. compression is good on all cyls, i switched the knock sensor and no go. i borrowed my buddie's f12 computer it ran good for 30 min again and then code came up again. please help me im going nutz!!!!!!!!