again I'm not sure if this helps or if this is deeper than everyone normally dives into this stuff, but i appreciate the help and if its to deep just let me know
If nothing to do with the starter is being controlled through the ECM then ALL the starter junk in all the various places in the tune need to be turned off. On the 'OS' tab. And the System tab. DTCs too.
So i have everything in the OS and DTC turned of/disabled, as for in the system....on the "starter relay" I cant disable, I can either go low side or high side...and i have "starter Diag" disabled.
Make sure DTCs are set to No Error Reported; some are set to No MIL Light as stock, that is not the same thing. You want it to not even run tests on things that are no longer there.
P0513
P0615
P0633
P1629
P1630
P1631
P1632
And any U codes for modules that didn't get used.
There are a bunch of DOD codes that need disabling. Don't forget the brake booster vacuum sensor codes - those are DOD also.
I assume you don't want DOD active, and/or have removed the failure-prone DOD parts from the engine?
What about VVT?
Don't disable U codes unless it's for a module that's no longer there. General Class2 stuff still needs to be functional, or at least won't cause issues if it's still there and being monitored for faults. Not even sure if disabling the codes would turn off Class2 anyhow.
The online descriptions for U0073 sounds like it might be at least part of your problem since it indicates a possible problem with the CAN network. I can check the 2010 Camaro service manual this evening to see what it says.
Some of the online stuff for P1682 indicates that it is seeing different voltage for the portion of the ECM that controls the TAC vs everything else. This also sounds like something that might be a problem since I would assume both are tied to the battery voltage. Again I can check the manual when I get home.
I only removed the rear o2's from the motor and the evap solenoid. I didn't realize it had cylinder shut down on it! VVT is still wired in....should i be taking it out and disabling it?
VVT helps with the low end torque but will limit cam size. The DOD lifters have been problematic but I haven't removed them from my Camaro, just turned off in the tune. Whether I removed the DOD system would depend on the mileage of the motor. Fairly low miles I would probably leave it alone and turn it off in the tune. Higher mileage, I would probably remove it, or at least replace the lifters with new DOD ones.
Cam & lifters have to be changed at the same time, the DOD lobes have really long lash ramps that'll cause misfires at idle if you put a standard non-DOD lifter on them. The DOD lifters have internal lash in the collapsible section, they need special lobes to compensate. The lobes on the non-DOD cylinders have conventional hydraulic roller lash ramps.
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