06murder

truck runs good on motor, but once nitrous is going up top near the end like 600 foot mark, truck would fall on it face, you can tell it losing power. could the converter be the problem or the 4.10s ? i have fti 3600 stall 4l80e, its and off the self converter, i upgrade the exhaust from ypipe to single to duel 3'' with x pipe and also have ls3 throttle body 90mm

FFDP

iTrader: (2)

Can't really guess at stuff without data. This would all be stuff you'd want to watch with a laptop to see what is happening.

Could be so many things.

06murder

would bottle pressure cause it?

smokinlmm

What's your fuel pressure doing when it happens?

06murder

50-60psi it’s has Walbro 450 and a fast fuel regulator

smokinlmm

Did you log it make to sure it is what it is supposed to be?

RedXray

How big a shot?
What is your bottle pressure at the start and end of the run?
Do you have a remote bottle pressure gauge in the cab?
Do you have a wideband?

06murder

The at the track it was cold low 50, got pressure as fast as I could was getting ready to go they pulled us back to let outlaws and extreme dot guys go first so 10-15 minutes pretty sure dropped a bit, and few months ago ran a mustang gt like a 2016 or 17, with the 5.0 and pro charger dyno over 650 to the tire, first run we lost bad, like 3 spinning bad lol that was a 8.13 pass at 93.65 did ok, but the second pass it was a close race we lost by half to car it ran 7.90 at 94.21 on street right when we lost power it just nosed down you can feel it a little that when came around, could the solenoids old?

RedXray

A nitrous dedicated heater (not a torch) to maintain bottle pressure. An in cab remote pressure gauge and a wideband gauge makes diagnosis much easier. If you're low on bottle pressure the air/fuel going to go rich. The wideband gauge will show the air/fuel and/or log data in HP Tuners.

Using a double gauge pod for wideband and bottle pressure.



NX Express makes a nice switch panel (love the auto bottle opener!)

Modern Barbarian

Dude, RedXray, that truck is sick. When I get Fenrir done we should meet up. Heard you were in my area.

As to your truck falling on its face and nosing over, I have seen that happen a couple of times to people. Usually if it does it and didn't blow up then it was low nitrous pressure or the knock retard heard something and pulled a shitload of timing. I have seen them lose fuel but usually that gets you something broke. At lease what I have seen. I have not ever run nitrous so all of this is 3rd hand experience, so take it for what it is worth.