400 pump evo owners just skimming over thread haven't seem an real issues.
http://forums.evolutionm.net/evo-eng...0lph-fp-4.html
450pump
http://www.dsmtuners.com/forums/bolt...l-walbros.html
Read post 9 till end of thread
From what gathering you should do a
400 with a Bosch o44 inline.
Threaded Mode