The problem you are experiencing is from too light of clutching for early season "road" riding where there is not much load on the engine. These sleds are geared fairly low and what happens is they hit full shift out quickly and then the motor starts to over-rev a bit. If you are clutched light and if you stay in the throttle it will go into limp mode. This will require you to shut the sled off and re-start it to clear it.
The fix for the issue is to clutch it more aggressively. You can also put the resistor that came with the pipe kit in-line with the EGT sensor and it will add 4% fuel at rpm levels above about 7700 rpm. The resistor can be removed (for elevations above 4000') when we get into real winter conditions with the deeper snows that load the engine as intended.
We found this issue yesterday in our testing as well. We have updated our instruction sheets to reflect the heavier clutching we are recommending.
http://www.slp.cc/instsheets/015-axys82.pdf You should not experience your limp mode problem once you have made these changes. Please contact us with any questions you may have.
Sincerely,
Jerry Mathews - SLP
