walbro 255lph
 

can anyone tell me if i need to uprate fuel pressure regulator after fitting walbro to standard jap wrx.also does running rich harm engine
thanks

If your gonna fit an upgraded fuel pump then you should get a remap.. To level out the amount of fuel....#
#
Ecutek 3 . Ecutek 2 . Power fc depending on your car

Asked about this myself recently, apparently the std reg is fine with the Walbro 255l. People usually uprate the fuel pump to prevent the std one from struggling after a remap. Scoobies run rich as standard and if I understand it correctly, it's your ECU that makes the requests of the fuel pump- its not the case that just cause you fit an uprated pump, it'll flow more fuel all the time.

Ask an expert though to be sure! :)

Ns04

I ran a walbro 255 for 16 months until i recently got round to a tek3
I did'nt have any probs.