Ls powered gen 1 cutting fuel
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Teching In
Joined: Feb 2013
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From: michigan
Ls powered gen 1 cutting fuel 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
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?
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?
Thread Starter
Teching In
Joined: Feb 2013
Posts: 34
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From: michigan
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???
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..
Then you have table B3647 that is asking for a 9.1 air fuel ratio at idle..
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Verdad Gallardo 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.
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.
Thread Starter
Teching In
Joined: Feb 2013
Posts: 34
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From: michigan
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
Thread Starter
Teching In
Joined: Feb 2013
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From: michigan
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
