I can only commenet on the excellent service of meizere do to the fact that i have one of there high volume pumps on my motor and had it for almost 2 years before even dynod. The pump keeped starting and stopping for some unknown reason and after checking all hook ups on dyno I sent this one back and explained what had happened with it so they checked it out. In 2 days i got a call and they said they couldnt find anything wrong but they replaced they motor anyway to be on the safe side. I do own a CSR high volume pump also but it is still new in the box. Maney of my friends do run these pumps though with no problems. :wink: