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Discussion Starter · #1 ·
93 550 efi. from a stop the sled will go like hell to 80mph (8000rpm) then drop down to 6000rpm and full throttle. slow down to about 45mph punch it and back up to 80mph and bog down again to 6000rpm(roughly 50mph). on slow accel the sled won't get over 50mph or 6000rpm. tested fuel pressure(36psi normal).timing sensor, injector sensor, tps, intake air sensor was out of spec(tried another but no change), coil tested in spec, new plugs, computer shows no codes,injectors tested in spec, compression is 125psi on both cyls. on a jack stand the sled will rev up no problem and hold the speed but on the trail it's a different story. sometimes it feels like the sled has a missfire while cruising slow but not sure. is it possible for a coil to crap out but still test ok? cdi? at the end of my rope and any help would be appreciated
 
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