I have a 1999 GTX RFI with around 50 hours that will start and run perfect except when i go past 3/4 throttle to WOT . If I punch it out of the hole or at cruising speed it will sputter until i bring the throttle down to 3/4 throttle and i can slowly increase until i reach wot and around 45mph. I’ve replaced the rectifier and stator due to a charging issue also replaced ignition coil , tps , filter in the tank , air temp sensor , checked adjustment on oil pump , checked and cleaned RAVE valves . Ive ran BR7ES BR8ES & BR9ES plugs . Checked mixture with BR8ES and looks woody brown . Its acting as if a coil wire would be shorting out or ign timing would be off at high throttle. Any suggestions would be greatly appreciated TIA .
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