Got a fresh build here. Truck fires up, seems to run great, then it dies as if someone turned off the key. I've done some research and seems like this could be a VATS issue. Like the anti theft cuts power to the injectors and stall out the motor 1-2 seconds after start up. I've got no codes and no theft light. Here's a quick video of what I'm dealing with. Got plenty of fuel pressure (60psi) the whole time. Any help would be great. Thanks
http://s1244.photobucket.com/user/Mi...etcij.mp4.html

 

It's got a fresh battery, fresh zippy tune uploaded. I've tried a Passive Key relearn with no luck. Tried starting it like 30 times with same results. No codes at all. Might replace the pass lock system sensor if I can't figure anything else out. Just figured I'd ask you guys if you've ever experienced this start-then die symptom before and what you did to fix it. Thanks

 

Is the security light flashing at all?

Might have too much starting fuel or air, then dies when it tries to correct it to target rpm it overshoots.

How crazy is the cam? Injectors tuned correctly?

 

Mine did the same thing after having my new deck so now I have to turn the key on wait till the deck turns on them the truck starts. Idk some kind of anti theft or something.

 

Turn off VATS in the tune and I'd bet it does away. I have had this issue before with no sign of a security issue.

 

Appreciate the quick responses guys!! Here's the build list I have. I sent zippy an email and waiting a response. Hoping maybe it's too much start up fuel or something like you mentioned. I've heard of similar problems with FIC injectors. That they take a bit of "learning" to get them right. I was logging with HPTuners when I made the video incase I need it later to help figure this out. No theft light at all. It comes on when the key is turned on, then proves out and stays out. I checked the VATS cell on HPT and it states "none".

2003 Arrival Blue Silverado SS
ENGINE (2BAR MAP)
Forged 370 (Eagle crank, Callies Compstar rods, Diamond pistons .030 over -2cc valve reliefs)
Fully Studded (Main studs, head studs, header studs)
CNC LS3 Heads with Stainless Steel Manley Valves (350CFM @ .600" lift)
Brian Tooley Custom Grind cam 230/246 .608/.596 117+5
BTR Platinum Dual .660 springs with titanium retainer
LS3 offset rockers with Comp Trunion Kit
BTR Pushrods
LS7 Lifters
LS9 Head Gaskets
Comp Double Roller timing set
Melling high volume/ high pressure pump
160* Tstat
Dual Electric Fans
RX Catch can

INDUCTION
Magnuson LS3 Jackshaft TVS2300 Supercharger @ ~15psi
LC32 Custom Hybrid drive 8rib kit (all IW pulleys)
10% OD crank
20% OD Cogdrive
Gates Green Fleetrunner 104" 8rib belt
HD Tensioner
3.5" RIP pulley
90mm TB + Xlink
Custom 4" charge tube
Varimax PWM 720LPH intercooler pump
Fluidyne 25 1/2 in. L x 8.10 in. H x 3 1/2 in. W Air to water heat exchanger with dual puller fans
Also have Snow Performance Meth kit (not hooked up)

FUEL
2005 Fuel tank + Bucket
Dual Walbro 400 pumps
-8AN supply
Aeromotive Y block
Dual -6AN Supply to back of Magnuson Fuel rails
Dual -6AN return lines to Aeromotive Fuel Pressure Regulator set @ 60psi base fuel pressure
Single -6AN return to tank
FIC 1000cc LS3 injectors

EXHAUST
American Racing 1 7/8" Longtube Headers
3" Dougs electric cutouts at collectors with dump pipes
Corsa Sport Muffler and Tips

TRANSMISSION
PATC BIONIC 4l85E
Precision 4L80 Multi Disc 2800 converter
TCI Flex Plate
Transgo HD-2 Shift kit
Alto Red Eagle Clutches
Billet input shaft
Time2Kill NVG149 adapter
Custom crossmember
Custom length Drive shafts
40K cooler w/ AN lines

 

This is interesting. I had a small interface installed so I could use an iPod with my factory radio. Only, after it was installed the HPT interface couldn't recognize the VCM. I couldn't log or edit at all. I removed the interface harness from the radio, then the new zippy tune loaded. I did a write entire and now the truck won't stay running! Maybe it's a similar security concern? I've tried leaving the key on for like 10mins before attempting to start and it made no difference.

 

Also, Richard, do you have any Coilover brackets left? Once this thing is off the jack stands, I'd like to convert my torsion bars to Coilovers.

 

One more note, if I try applying throttle to say 30% when trying to start it, it seems like it dies even quicker.