sbcfarmer

I have a gen 1 406 sbc procomp intake and rails accufab cable throttle body efi connection 24x w/ 1x and coil on plug powered by a ls ecm from a 2003 dbw and my own cleaned up factory harness I have no problems with the ecm other than it fires the engine for 1-2 seconds and cuts fuel I have antitheft tuned out with efilive my question is the drive by wire keeps showing up in my tune after I load a non dbw tune and read it. I know if there is something wrong with the dbw it will kill the engine could it be that I have 50 psi fuel pressure and engine will run on carb clean no prob

wait4me

iTrader: (10)

What is the part number of your 2003 ecm.

And what file are you using that shuts off the electronic throttle as your base tune.

Did you turn off the column lock setting in near the antitheft as well?

sbcfarmer

the ecm part number is 12576106 os is 03150003 column lock is off base tune is a 2003 chevy truck lq4 upgraded to a 2 bar os. tune and log file attached notice pid vehicle theft deterrent fuel system, is enabled???

wait4me

iTrader: (10)

If you are running the custom os, you have to run it like one. The tables you have are not set up yet. When you open the software it is giving the warning saying that there is bad data in some tables. If you Follow the os2 tutorial it will tell you how the system works. For example, A0014 you have it at .8 factor where it should be a 1. or close to it like 1.01, ect... .8 is a MAJOR change.

Then you have table B3647 that is asking for a 9.1 air fuel ratio at idle..

sbcfarmer

thats crazy I already went through all of those tables must not have saved I'll go back through them thanks

wait4me

iTrader: (10)

You will probably have to use an express van calibration to start from to get a non electronic throttle file to work as your base without getting technical.

sbcfarmer

I am loading a express van tune in now stock os just to see if I can keep it running

sbcfarmer

same thing start than stall here is the current tune and log file

wait4me

iTrader: (10)

what injector size are you using, and what are you deleting in the vehicle platform options bitmatrix.

sbcfarmer

just a stock lt1 injector to get it running I think 22# and I turn everything off in the vehicle platform

wait4me

iTrader: (10)

I would suggest you getting a tune by a person/shop that has more experience with what is going on more that is local to you. I don't want you to damage your engine.

You shouldn't run 22lb injectors without setting up for them in the tune. Plus you have to set up for Ve, and mass air meter, and sensors, and well just about everything as your combo is not going to be easy right off the bat.

sbcfarmer

I'm getting pretty familiar with efilive as I've tuned my 2 duramaxes and girlfriends 2004 envoy so I'm going to give it the best I can pretty confident I can get it to idle I just think I'm missing something or something is not compatible I will get a video posted as soon as I can it acts like passlock. Its only cutting fuel I can run the engine on carb clean so I just have to find it could it be a hidden parameter I looked on the tune I had from the 2003 express van and it had the etc drop down folder in it too. I tried an older express file but it was a 512k and it wouldn't flash into my 1 mb

sbcfarmer

turns out I had some wires mixed up right bank injector power was in map ground and ground for map was grounding injector 4 now fixed stays running a little longer but still not right I have since gone through my whole harness again tore all apart followed every wire to double check played with the tune a bit and finally sent it out to jim at tpis to double check it can't wait to hear what he says

sbcfarmer

here are finally a couple pics

sbcfarmer

finally up and running jim from tpis didn't get back to me yet but I did some tuning on my out of range values and it runs!!!