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My 2002 Zr 600 efi has a very weird problem and i know nothing about these efi system. A while back i would get on it and start it then it would die after 60 feet. Well today i tryed to mess with the tss switch and still it didnt do anything. It will run good but it will bogg out at 70 mph and this thing should go way faster then that! It bogs out if i gas it to fast and will some times backfire. What could be causing this? What should i try. I put fresh gas in it and ran sea foam in it and still haveing the same issue. I am in need of help!
 

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Exhaust valve system? Those sleds have them right? My Polaris EDGE did the same exact thing when the rubber bellows for the exhaust valves were ripped.
 

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Change the throttle washers, I had the same thing with my 500 and it did the same thing with the triple. I never touched the tss just the washers. I would just keep changing the washers then do that tss fix.
 
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