Hi,I have put a rb30na/turbo motor into my eh holden,Just wondering can u go to large in fuel pump,i put a walbro 255 in since i put vlt injectors in it is running way rich,have tried a few things off this forum,have been told the fuel pump is to big for the regulator,any help would be welcomed,Neil
Are your running a RB30ET?
You might need one of these-
Adjustable fuel regulator
Also what type of ECU are you running? and injector size(cc)?
Some original photos have not been recovered yet.
Walbro fuel pumps with standard fuel pressure regs are fine, if you have an atmo engine that you have converted to turbo and you have changed the injectors and are still running the atmo ecu it will run rich, you will need the turbo ecu