Arctic Cat has problems with their 02 EFI sleds. *4 of us bought ZR 800 Cross Countries this year and one of us has had the exact problem you described - Fuel Starvation problem with the noise in the tank. *In addition my friend whose sled had problems works with a guy who bought two new EFI sleds for 02 (ZL 600 and a 800 Pantera) and both of his sleds had the same problem the same day when was out riding with his wife. *Brought the sleds to the dealership, they ordered 3 new fuel pump kits to the the tune of $1000 a piece and installed them. *Dealership called them to come pick up the sleds - My buddy's sled was fixed, but the other two sleds failed before he could get them on the trailer? *Since then, the dealership said that after discussions with the factory, they believe it is the smart valves and have since ordered another new fuel pump kit and smart valves. *I live in the Twin Cities and every dealer down here has replaced at least 5 fuel pumps this year. *I believe it is the smart valves - 2 in each tank in line with the fuel pick up hoses (rumored to have been changed for 02) that are burning out the fuel pumps. *The problems seems to manifest itself between 100 and 400 miles. *Arctic Cat needs to do a recall, and if not, all you guys riding 02 EFI sleds may want to check into this before your warntees are up. *What sucks is the snow levels this year, there has really not been enough snow to seriously ride, I think that if there was more snow on the ground that more people would be seeing these problems. *I have just over 100 miles on my 800 and it has been flawless, GREAT SLED! - but I am worried - we will see what happens this weekend!