HELP! car only starts wit carb cleaner

[Mannyman84]

Hi all, im having an issue with my 2002 trans am, here is a small break down of the setup and what ive done

-LS 427 with F1R procharger
-sheet metal intake
-Maf delete
- 3 bar GM sensor
- injector dynamics injectors 1050x

the issue im having is the car isn't starting unless I dump some carb cleaner in the intake then it stumbles unless I hold the gas till it warms up, when I had the maf sensor in the car it started then died unless I held the gas but no need for carb cleaner, now it seems as it doesn't want to run at all when its cold ever since in deleted the maf.. I noticed the issue after I installed the injector dynamics injectors, ive double checked all my data and seems everything is correct to their specs as what the table shows, im lost at this point... I also put a diode on one of the injectors to see the pulse and its very faint, pulse is small but car wont stay running, when I crank the car starts up then dies as if vats is kicking in but vats is off.. so I have injector pulse for about 1 or 2 seconds then shuts off. it definitely isn't computer related since I went ahead and put a second computer I have as a spare. this file isn't the latest file, only difference is the vats is off and fans are a bit lower since the thermostat was changed to a 160 degree. im using my other laptop, my latest file is at home with my other laptop

[5FDP]

Set the MAF dtc's to MIL on first error.

Set the dynamic airflow high rpm disable to like 8000rpm, yours is set to 200rpm for a MAF only tune.

I'd disable the VATS system too.

[Mannyman84]

Vats is disabled, air flow high rpm was set to 8000, and maf set to first error but same issue.. I honestly feel its something with injector data or timing since it started doing it after the new injectors and data

[5FDP]

That tune must be old then, as VATS and those settings weren't changed yet.

A log could be helpful.

Even adding a touch of fuel to the VE or adding extra base running airflow to keep it running.

[Mannyman84]

Sorry, meant to say I just did those adjustments.. I actually got the car to run after trying and trying, when its cold I get little fuel and some back fire and stumble till it warms up, when it cools down that's when the problems occurs.. I was looking at the injector data and noticed that some of the values zeroed out by themselves after I input them, for example if the injector data says to put 0.004 it goes to 0.000 automatically, as if the data is not valid for this PCM. I need to figure out how to scale that and get the proper data. only makes sense to me because it started to happen after I did the new injectors. With the stock data I had no problems

[SultanHassanMasTuning]

3-22-19 test.hpt


give this a try

some injector data was off and your VE was weird

do you have a return fuel system?

[Mannyman84]

3-22-19 test.hpt


give this a try

some injector data was off and your VE was weird

do you have a return fuel system?

yeah the ve wasn't tuned yet and I did mess with the injector data a bit to make sure it wasn't the problem but no matter where I set it to it did the same.. Yes the vehicle now has a return system

[Mannyman84]

I went ahead and switched back to stock injector data and the car starts up and runs.

[SultanHassanMasTuning]

with a return style your flow rate for the injector needs to be static

[Mannyman84]

with a return style your flow rate for the injector needs to be static

ok ill put them all as a same value