Blown Rams and fuel pressure

[UNBROKEN]

My fuel pressure gauge has a warning function...I have it set to light up at 52psi.
Base fuel pressure is 62psi.
Normal driving is fine but above 5psi of boost it dips down to 50.
If you have a blown Ram I highly suggest getting a gauge on the FP...the whole tune will go outta whack when it drops that low...not exactly safe IMHO.

On a side note...I did some 1/4 mile tests using the Trinity last night and got a best of 12.4 with 2, 250lb guys in the truck. I'm not gonna push it again until I get this FP thing taken care of.
I don't wanna band aid it with a Boost-A-Pump so I'm working with Arrington on an in-tank solution.

Just a heads up guys...something for us blown guys to keep an eye on.

 

[09SMOKINHEMI]

good stuff man. 12.4 is really really good

 

[WhiteExpress]

Get you a pair of A-1000s. plenty of fuel...

 

[fasthemiram12]

Single AEM 50-1000 on the way for me...
290 LPH @ 58psi

 

[BlownGP]

Do you have a wideband?

fyi
+1 PSI fuel pressure for each PSI boost
-1 PSI for every 2.036021 InHg Vacuum

 

[UNBROKEN]

I have a wideband in it....A/F is staying safe for now. I'd rather get a pump in it that can hang on than take any chances though

 

[fasthemiram12]

All I can advise is dont do dual pumps... If one fails you wont know it.

 

[talon6]

i had to get a bigger pump also. i dropped my tank, took my fuel pump basket apart pulled stocker, and installed a walboro 255. plenty of fuel pressure now.

and 12.4, awesome times. running good.

 

[UNBROKEN]

That's what I'm thinking...a big single in-take to keep it simple.

Take that 12.4 with a grain of salt...it was off the Trinity. Until I see it on a track it's just a number that some piece of electronics pulled outta thin air.

 

[Hemi Joe]

That's what I'm thinking...a big single in-take to keep it simple.

Take that 12.4 with a grain of salt...it was off the Trinity. Until I see it on a track it's just a number that some piece of electronics pulled outta thin air.

Exactly, how was the launch? I doubt the Trinity takes into account wheel spinning.

 

[BlownGP]

I have a wideband in it....A/F is staying safe for now. I'd rather get a pump in it that can hang on than take any chances though

Yes, you dont want to get any KR...

How big are the injectors in the 5.7 HEMI's?

I know a buddy of mine who has a 11 sec SRT8 charger runs my stock 36llb injectors from my GTP plus two others of course. Might check that too if you run out of fuel.

 

[UNBROKEN]

I'm running 60lb injectors.

 

[fasthemiram12]

What psi are you making?

 

[UNBROKEN]

Just tuned for 8psi with this motor. Bigger and better things will come this winter.