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2015 Yamaha Viper sr mtx MPI 180-190 power issues

yamahahog

Newbie
Joined
Oct 31, 2015
Messages
10
Age
50
Location
Evanston Wyoming
Country
USA
Snowmobile
2015 Yamaha Viper M-TX 162 SE 1st stage MPI Turbo, 2007 Yamaha Apex MTN SE 162
I have a 2015 Viper SR MTX with the 180-190-MPI turbo it and I'm having issues all of the sudden not getting up to full rpm like I'm losing boost or something like that. Has anyone had any issue like this? PLEASE!!! HELP!!!
 

do you have a boost gauge? if not, get one.
 
Check the connection for the map sensor make sure it hasn't come loose and check make sure the wires are seated in the plug on the map sensor.
 
Look for any air leaks, check your belt, do any clutching? I had to switch to the 8DN belt. RPM was all over the place with the 8JP. I blew up 3 8JP in first few weeks with sled. Switched to 8DN and I have not changed one in 3 seasons.
 


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