Fuel or Programmer ??
 

A buddy has an 01 dodge with a SuperChip programmer & new LP & a pusher pump.
FP 28# at an idle

Installed a set of 100hp injectors, after install took it for a drive.

While driving we noticed that 4th, 5th & 6th gear it cuts out like it is running out of fuel. FP drops from 28 to about 12.

Cleared all codes and went again & same thing. So we desided to unload the SuperChip & walla ran great?

So desided it might be the pusher, so bypassed & reinstalled the programmer 1 stage at a time, you get to stage 2 and it comes back? Keeps throwing the map sensor code??? Can't remember which one?

If you get on it hard and let off of it..it will die? Sometimes it will hunt for fuel at an idle.

I know i left something out. Any suggestion??:humm:

did is old liftpump die and that is why he replaced it?? How long was it bad, im thinking maybe the vp is bad

He was having some issues back in the winter with the truck not wanting to start. But when it warmed up it would start fine? ( Maybe heater grid )
So he decided to change the LP.

:humm: i betcha the vp is done and keep up with fuelin the bigger sticks

So he has changed the Lift Pump and Injection Pump? Or hes running 2 lift pumps?

MAP sensor code the only one its throwing?

Hes running 2 LP, but only for about 3 days, just put it on. The truck only has about 90,000 miles.

At 1 time we had 2 codes ( map & ??? )

Will call him in the morning or maybe he will jump in and help me out here tomorrow.
He is a DB.:5:

Ya id like to know more about is truck

It is all stock except for the sticks, exhaust brake, 6 speed, stacks, gauges (Fuel-Boost-Pyro) & BHAF.

Not to be a smart a$$.
Any thing else Luke? :humm:

See how it runs with just his new LP. And have him watch his Fuel Pressure.

Did that, just lower pressure at idle. The LP is an AirTech, they hold about 12-13 at idle and at WOT drops to 10. (without programmer)(just sticks)

When the superchip was reinstalled and started to cut out it dropped to about 6-7. When he let off it died and had to pull start it. Would not start on it's own?