The OEM pump quotes between 300 and 400. I am learning that buying parts for this is not like buying parts for my Gen 1. It's more of a religious experience. You have to believe that spending that much money is the right thing to do..... man. I see a lot of after market parts but it makes me nervous. These things are engineered to an intense level.
I'm having a problem where the bike will not accelerate hard past 5k revs, on a gentle throttle it will rev past 8k. I'm trying to find the flow rate of the pump, ie litres per minute etc, anyone know?
I would say that its a pressure problem. There was a post on the old starVmax forum, where a stock pump had to be replaced, because it wasnt putting out the required pressure anymore, and HP was suffering because of it.