Hey guys,

I am running a B20Vtec setup (Stock block, stock Head) with minor bolt on mods.

The fuel pump that I am using is the Walbro 255 in tank, with the B & M command-flo regulator.

My problem is that no matter what I do to that regulator, I can't get my fuel pressure below 50psi. I have tried turning it all the way out and the car will idle but will barely run when I drive it. But even with this issue the fuel pressure always shows 48-50psi. I have also checked the guage for accuracy.

Has anyone else run into a issue like this?? Is my regulator too "weak" for my fuel pump??

Thanks in advance for any help!

 

thats normal ...all the regulator does is cause a restriction at the end of the fuel rail to change the pressure...those type of regulators even when completely open still cause to much of a restriction to lower the higher pressure from the 255 fuel pump

you can get a more expensive regulator or drill a small hole in the stock one to relieve pressure...

 

awesome, thanks for the info!!