MattMac1
Veteran
What do you guys think would be some realistic hp gains with air and exhaust mods with some tuning? Would like to bump up 20-30 horses. My balls aren't big enough for a turbo quite yet, but like more power to get the beer gut up the hill a little faster :exc:
Can't wait for snow or my Nytro
Can't wait for snow or my Nytro
realistic fuel controller,exhaust and airbox probaly around 6-8hp.The 4 strokes don't gain hp like the 2 strokes do.
Climbmax
Expert
Nitrous would be the best IMO. No problem spraying any 4 stroke.
CM
CM
Topgun
Expert
So as far as stock class racing, what can be modified for more power?? Can a person alter the fuel mapping and still be legal. What about things like valve lashing. Can a person lash them different like in the case of a solid cammed auto engine for more gains in 660? Man, it sucks being 4 stroke illiterite.
this years programmers will be legal in stock classes.
- Joined
- Apr 17, 2003
- Messages
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- Location
- Menno, SD
- Website
- www.ulmerracing.com
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- 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
Estimated guess as the exhausts aren't done yet, but I will say 10-12 hp available with intake mods, exhaust, fuel controller, and adjusted timing.
Yes fuel controllers are legal in stock class drag racing. If you are interested we will have a filter kit and Power Commander maps available.
Yes fuel controllers are legal in stock class drag racing. If you are interested we will have a filter kit and Power Commander maps available.
