my stock flex fuel pump shows 58psi all the time, unless you floor it and then it goes a little lower. I dont have any issues until i get to 12psi boost or more...

the 58psi reading is from the aeroforce interceptor gauge and its supposed to be the fuel rail pressure..

not sure why you are seeing 42...hopefully its not a big deal ..what will really matter is when you go past 10 psi boost

keep us posted

 

Well guys I dyno the Beast and it lives up to it name. 742rwhp at 13lb and still wanting more on stock fuel system with a walbro 450. more details in my build thread.

 

Damn that's impressive.

 

Makes me wanna do the swap... you just dropped in the 450 and plugged it into the FPCM, that easy?

 

My friend has had this fuel pump for about 3 months on his 07 nnbs without any problems on 12-13 psi on his 4.8 guessing about 550hp at the wheels, another friend dropped in the pump ill ask him for some pics and post em

 

Yes, I just used a tee to go over to the bucket fill tube. And change the connector to the pump. Easy install.

 

Any pics or maybe a diagram Byrd?

 

I will draw up a diagram tonight.

 

you da man

 

Thanks buddy