m8t running way too rich at high elevation

[powder freak]

My m8t runs great at 2500ft where we unload. As I climb in elevation I am noticing very substancial power loss & by the time I reach 6000 ft. it is running so rich that it is hard to even get it to go because it is bogging so bad. I have the fuel controller turned down as low as I can and have turned the fp down to 30psi My na rev800 makes more power at 6000ft! When I turn around and come back down it gets crisper and starts making more power. By the time I get back to the truck it is pulling exactly the way it should and runs perfect. Does the m8 have a dpm to compensate for the elevation change? I had the dpm on my rev 800 go and it did the exact same thing. If it does where is it and can it be tested?

Thanks in advance
powder freak

 

[GF2]

Make sure the clear tube that comes off you ecu is not obstructed this is what changes your mapping for elevation changes , I think worth a try .

 

[powder freak]

I checked the clear tube coming out of the computer and it is clear. I bought the seld last spring and rode it 5 times and it never did this. I did have some other issues with it when it got hot which turned out to be a bad tps. It would get a short or open circut when it got hot. I changed that last summer and that problem has been solved. It has an ovs kit with an aero 53, pure logic box. I moved the box up to the handle bars last summer so I could see it when riding and had to splice in 6" of wire to reach the injectors. I don't see how that could affect it. I rode 10 miles up the road to 6000ft and back down 10 miles to the truck and I burned about 5 gal of fuel. Any other ideas??

 

[Jeff K]

You need to shut off the sled and restart it every 2000' elevation change so the PL box can re-calibrate itself to the new elevation.