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IAC count is about 110 warm

DBC, stock throttle body

5.3L LM7 that's been rebuilt with BTR stage 2 cam. When I start it the rpms jump up to 1800-1900 and quickly come back down within a few seconds. How do I fix that? I've increased idle rpm...

I did unplug all injectors so they wouldn't fire and squirted starting fluid into the intake. It sputtered a little. I actually did it twice. Since it has fresh rings on the pistons, I'm hesitant...

Pcm is from a silverado. It's been retuned with the flex fuel injectors. No other parts of the flex fuel system are used. Vehicle was running with the same trans, but a different pcm with an sd...

It does sound like it's making compression. I have not tested leakdown. Fuel is prob 3 months old. Had idle set around 900 without any difference. Replaced pcm already. Even put a pcm that had...

I had the engine rebuilt by a reputable builder. Not to say it can't happen, but probably very unlikely.

Tried all of that. Didn't do anything. Injector shut off is at 80% tps on the tune.

Just a little sputter, not even close to starting.
I'm seeing 33lb on the tune and on the scan log. Where are you seeing 30?

I've got a 2002 5.3L engine from a flex fuel Suburban that I put in a '69 c10. I had the engine rebuilt with a BTR stage 2 truck cam. 4L60E trans rebuilt with HD internals and Circle D 2800 stall...