- Joined
- Apr 17, 2003
- Messages
- 5,550
- Reaction score
- 1,438
- Points
- 2,003
- Location
- Menno, SD
- Website
- www.ulmerracing.com
- Country
- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
- LOCATION
- Menno, SD
- WEBSITE
- www.ulmerracing.com
Here's a graph from the track dyno comparing our Stage III Stock RX-1 clutch kit to our Supercharged RX-1. This run was still with the jetting on the supercharger a little lean, but gives a good reference still.
Allen
Allen
pistol
Pro
Hey Allen, how did the MPI SC work ?
I think he is out on trip right now. Will be interesting how it runs. I hope it does good since I am putting on one too.
Doug
Doug
- Joined
- Apr 17, 2003
- Messages
- 5,550
- Reaction score
- 1,438
- Points
- 2,003
- Location
- Menno, SD
- Website
- www.ulmerracing.com
- Country
- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
- LOCATION
- Menno, SD
- WEBSITE
- www.ulmerracing.com
This thing flat out ROCKS!
I didn't get a whole lot of miles put on due to fiddling around and lack of snow. The riding we did do was very rough ditch riding with alot of bumps and jumps and this thing didn't even hiccup once. Let me tell you that you need some big balls to grab a handful of the trigger! Right now I'm geared stock ( 23/38 ) and I saw 137 in about 800' but didn't get a chance to really open it up much due to the conditions. This thing has gobs of torque and just rocks back and goes when you nail it anytime. Running 4500 rpm and 20 mph the thing has 4 lbs of boost! It's instant!
Not to cut this short, but I'm beat and it's time to get to bed!

I didn't get a whole lot of miles put on due to fiddling around and lack of snow. The riding we did do was very rough ditch riding with alot of bumps and jumps and this thing didn't even hiccup once. Let me tell you that you need some big balls to grab a handful of the trigger! Right now I'm geared stock ( 23/38 ) and I saw 137 in about 800' but didn't get a chance to really open it up much due to the conditions. This thing has gobs of torque and just rocks back and goes when you nail it anytime. Running 4500 rpm and 20 mph the thing has 4 lbs of boost! It's instant!
Not to cut this short, but I'm beat and it's time to get to bed!

- Joined
- Apr 17, 2003
- Messages
- 5,550
- Reaction score
- 1,438
- Points
- 2,003
- Location
- Menno, SD
- Website
- www.ulmerracing.com
- Country
- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
- LOCATION
- Menno, SD
- WEBSITE
- www.ulmerracing.com
A thanks needs to go out to Matt @ The Speed Shop as well. He provided me with the hood scoop and guage pod! Thanks Matt!
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