have a few questions about a fuel pump and couplers for my turbo. im going to put a walbro 255 this weekend before i put the turbo on, my fuel gauge is wonky so it need to be done anyways. the pump i have is the standard pressure one, should it be the high pressure unit? i don't think il be going over 500hp for a while. also the throttle body and mass airflow are 3.75''. are 4'' couplers ok for that and just suck it down with a clamp?

 

walbro 255 is what i have and im running 8-9lbs of boost , but i put 44lb injectors in too, did you change your injectors?

 

They make silicone couplers in 3.75", may as well use them!

 

Both versions of the 255 will flow around 50 gal/hr at 60 psi. At higher pressures the regular version drops off quicker because the relief valve opens sooner.

 

i have 44# injectors going on when the turbo goes on. guess i didn't look hard enough for those couplers i see extreme psi has them but i do already have one 3'' to 4'' coupler i was thinkin about using for charge pipe to maf

 

so i tried the coupler it fits pretty good, don't think there will be any issue with it. just gotta tighten the clamp a bit more.

 

found this video on youtube about walbro pumps, i tried mine out for a second (yeah i know its bad, was just for a sec) mine sounds like the supposed fake more than the other one. i did buy mine from a local place and even asked them if they had any come back, he said not any had come back....any thoughts

http://www.youtube.com/watch?v=7102y...eature=related

the pump i have is a unit #F20000169 on the pump not 341 or 342. seems to me that the gss340 341 and 342 are the ones being copied. am i getting paranoid?