Engine/Transmission (1998.5 - 2002) difference between HRVPs?

[Niro]

Ive heard of alot of companies supplying these pumps



I was wondering what are the differences amongst companies?



the only one I had talked too was scheid, and I know there pump is around 1700ish and industrial injection is 1600



so I was wondering if one performed better then others or if they are all by the same company and just supplied differently or what?



thanks for all help



Carl