Interesting related read:
OEM ic pump vs CM30 - MBWorld.org Forums

Appearantly they are saying the stock pump 002 outflows the Johnson pump cm30. Half way down the first page someone compares the 002 pump to the 003. I looked at the charts but couldnt figure out how to read them.

Do you guys have the pn off your lightning pump? I want to see if its this one:
http://www.siliconeintakes.com/produ...80ccbdea6c292f

It seems my johnson pump changes tone like its working fine then struggling. Can someone who has hot wired their pump listen to your pump(engine off) and tell me if this is normal? I dont think it is.