That exhaust looks very very well built! Cant wait to hear the final setup.

Dustin

 

Looking good looking good...... My motor should be here next week Finally maybe have the ol red truck back roaming the streets soon. I'm going to be running 60lbs. injectors and a dual-walbro in tank set-up with METH Kit, maybe what you need to look into...

 

logged fp today...
well...fp is good at idle and cruising...48 - 53 psi
fuel pressure is good when WOT is initiated...61.xx
at about 3500 rpm the fp begins to fall as rpm continues to rise...
even though commanded afr is set to richen as rpms rise...just to see if we could richen WOT at all...
regulator bad?
not enough injector?
not enough pump?

 

My FP stays around 58 all the time. around 60 at idle i think. Mines on a gauge, not hooked to the flashscan right. Seems maybe your is low. im returnless tho. How big are you injectors.

 

gm 8.1 marine, multecII. 42#'ers

 

I think you need to get that pressure up. Im unfamiliar with the regulator stuff though. Your in injectors are rated at 42LB @ 58 psi probly. anything less than 58 psi is gonna be less injector.

 

well...its not the filter and its not the regulator...
I found a really good deal on an MSD Fuel Pump Voltage Booster...
figured it might solve my fueling issues...
and even if it doesn't, I can still use it on a dual pump setup...
the Casper's Electronics Voltage Booster I have only increases voltage by 2.2 volts @ 70 percent TP because it increases voltage to the entire electrical system...it worked fine for my stock set-up with stock fuel pump wiring...the MSD will allow me to increase only the voltage to the fuel pump...and quite a bit higher as well...

 

info from Racetronics:
Part Number 17113739 (OE Part # 25176061) *** Direct fit for short G.M. LS1 SUV injectors ***
Static flow @ 37.95lb/hr @ 43.5PSI / 300KPa (4.31 g/s = 398cc/min)
Static flow @ 43.82lb/hr @ 58PSI / 400KPa (4.97 g/s = 460cc/min) *
Dynamic flow (2.0ms/10.0 ms(pulse width / rep rate)) 6.0 lb/hr @ 43.5PSI (0.748 g/s @ 300KPa)
Coil Resistance: High Impedance / High-Z (Works with factory computer injector drivers)
Factory Tollerance: +/-5%
Connector: Multec 2 (Delphi)

 

O so they are rated at 44 psi.

 

that info was from fiveomotorsport...
I think Racetronics info is accurate though...
I changed my post above...