lt1 air injection hose

I would start looking at the mass air flow sensor. it is between the air filter housing and the throttle body. make sure the big hose is connected with no leaks and the wires are hooked up properly.

Roy

I chased the problem down to the plug wires. I didn't have a good connection on the left side. An Excellent way to figure this out is to start the car when it is cool and unplug each injector and listen for changes in the idle. If the car boggs with one undone its gettting fire and fule, if not then there you go.