Matt I really hope it doesn't have the GEMS, it would make the decision a lot easier.
Here is the description posted on TY about the kit for the 14's. Are the 15 kits different?
The new 2014 Yamaha Viper MPI turbo kit
We have been working on this kit for a long time now. We have a full season of testing in the snow, both performance evaluation and durability testing along with countless dyno pulls. This kit is in production now and will be available the first week of October 2013. The 190-240HP intercooled kits will sell for $4595.00.
We designed this kit with several things in mind.
1. Ease of install. This kit is one of the easiest installing kitl that we have ever done. Estimated time is 4-8 hours.
2. Sound. This kit will be available with a sound compliant trail muffler. That allows this kit to be used on trails that require compliant sleds or just for the stealth factor.
3. Adjustability. The boost level can be adjusted to what you want for performance and your fuel requirements.
4. Fit in finish. We pride ourselves in taking the extra steps to make all of our kits have that “factory fit” to them.
This kit will include everything you need to install this on your sled.
Kit includes:
Mitsubishi turbo
MPI custom air to air intercooler
GEMS fuel controller
All billet high flow blow off valve
Heat shields around turbo and waste gate
Muffler choice Trail or Race. Full stainless core wrapped with fiberglass and covered with a aluminum outer shell. Lighter than stock
O2 sensors weldments in the exhaust inlet.
All kits are manufactured in house by MPI with CNC equipment.
Everything is TIG welded in house.
We use the highest quality fasteners, clamps, and hoses available.
Fully illustrated instructions and phone support.
Call with any question 888-649-4609
www.mountainperformance.com