Originally Posted by waynoSTI
You should change out the check valve on the Bosch pump. Most of us grab them from Jaysracing...
It will help the longevity of the pump!
Where'd you buy the L19 from? Are they stock size?
Thanks for the info man. I bought it from http://www.extremepsi.com/store/home.php ( Niu Do )
yap and they are stock size.