Walbro part number is: 5CA3351
Johann, if you go to evolutionm.net, it is well documented on evo's that you will run more rich just by adding the 255lph walbro over the stock pump. Most evo's have lost anywhere from 8-10 hp on the dyno in the upper rpm range and air/fuel ratio does differ. I can dig up the info if you are interested. Pm me and i'll dig it up for you.
Edited by deafdano, 28 October 2004 - 11:59 PM.














