mjones2004a

Having trouble narrowing where my dead spot in my motor is coming from
.. at idle if I try to Rev it quick it just falls on its face

Run down what it is..
Forged 370 ci 10:5.1
Ported 317s
Vic jr
Accufab 4150
Fic 525 injectors
Ls7 lifters

Not sure if it's a fueling issue, something in computer/electrical, or motor issue

Just put a new custom grind cam in specd to motor to see if that solved it and it didnt.. I can take video if needed .. need some guidance. . Thanks guys...

This is a new build so been this way since it went together not all the sudden

RonSSNova

iTrader: (3)

What controller are you using?

mjones2004a

Lnc2000 and leash progressive controller

RonSSNova

iTrader: (3)

I meant for the efi?

Old Geezer

iTrader: (3)

From the pic, it looks like you have the fpr plumbed before the rails. What's the fuel psi do, when you whack it?

RixTrix

Geezer - I think everything is on the feed and the return line comes out the bottom of the regulator.

This works OK but does not circulate the fuel in the rails. Not circulating the fuel in the rails means the only way for air to get out is through the injectors.

OP - I asked before about engine management I meant what ECU/PCM are you using?
And how are you tuning it?

LilJayV10

iTrader: (39)

Do you have a WB on it? That will point you in the right direction. Also watch the MAP if you have means to data log.

From what you are describing is when you smack the throttle it's going lean.

If I'm not mistaken that can be addressed in the PE table.