I got a 2008 800 with pistons, ported tb and head, exhaust and wiseco fuel controller. I was having a lean issue like 15.4 wot with the controller maxed out so I checked the fuel pressure and was 39lbs at idle and would drop to 20 lbs wot. I put a new fuel pump in it and now getting 12.8-13.2 wot afr with controller still maxed and runs tons better but fuel pressure still drops to 25 lbs wot. And help is appreciated thanks.

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