I rode today with the new fuel pump and pickup assembly, it is no different than the old one, which is exactly as I had expected. Once again, after getting down to a @1/2 tank, it would start going lean on long steep climbs. Having the wideband O2 has been an eye opening experience. You can hit a long hill and all of a sudden it willgo from 12.5 to 15, 16, 17 to 1 and keep going higher. I tried to let off and turn out ASAP when this happened. This is absolutely positively one of the reasons for sleds going down. I have seen this over and over on the last 3 days of riding with the wideband hooked up.