AmSnow.com is now SnoWest.com
What we didn’t like
The suspension calibration, although supposedly the same, did not feel the same on the two pre-production sleds. Not surprisingly, the Cat was set up a little tighter and seemed just a tad more responsive in chatter in the corners and during transfer. We re-checked all the settings, but except for a few turns on the center shock here or there these sleds were set up exactly the same. That is what leads us to believe there was some difference in internal shock calibration that we couldn’t determine, or possibly break-in between the sleds we rode was different.
Neither seemed all that fast. We have heard through the grapevine that both these sleds were “de-tuned” in their pre-production form, but that’s simply a rumor. We DO know that we didn’t see much more than 80 mph on top-end out of either of these sleds in early testing. While we were at close to 6,700 feet of elevation we were able to coax similar tops speeds out of lower horse sleds. This engine, in the Nytro, pulled 135+ hp on several independent dynos we’ve done over the years, so we have high expectations for it in this chassis.
We had both a Viper and a ZR 7000 go into “limp” mode without explanation. We were told it was due to incorrect octane at our test site, but these 4-stroke motors should run just fine on 87, 91 or 93 octane even though they prefer 87. The fix was to shut the sled (and key) off for at least 1 minute and re-start it to clear the computer.