Interesting support answer for the EFI Avenger

[rangecreekdude]

I purchased a new 2008 EFI Avenger about 2 months ago and took it out for the first time in deep snow with a set of rubber supertracks on it, and at the elevation of 10000 ft. It did not perform like it did at my house which is at 4100 ft. This concerned me so I dropped it off at my dealer and they adjusted my throttle and installed a new thin clutch. This made just a small difference but nothing to cheer about, so I contacted ODG myself and talked to a support person who seemed to be very knowledgeable. He told me that Kohler recommends for every increase of 5000 ft in elevation that you start the engine when cold and hold the throttle at 1/3 a turn or 2000 rpms for 20 minutes steady to recalibrate the EFI computer for oxygen intake. The computer adjusts for a cold engine as well as a hot engine.

Sounds kinda different to me but I just wanted to know if anybody had any experience with this.

[MaxRules]

That's new info to me. 20 minutes is a long time when you are ready to ride. I've never heard of any other EFI powered vehicle (truck, car, quad) needing this 'adjustment'. I'm not saying that won't help as I sure hope it does... but the Avenger is simply under powered for high elevation track usage. I've never heard any stories of someone who was just overly impressed with the Avenger's mountain climbing ability in the snow but I have heard many stories of disaster and I have sold one new Max IV because of it. High altitude robs so much power from these small engines that when you add tracks and a differential trans that cuts power in half when turning, it leaves you wondering if they tested the vehicle at all in this important market segment.