Got it running!

[Factory Guy]

Just finishing up my first LS swap into my Squarebody LQ4 and a 4L80e.

I haven't take her on maiden voyage as I cannot keep her idling?

I am using a MAF and a MAP and both O2 sensors, (the fronts I believe), its DBW, stock coil packs. 2003 tahoe ECU had vats removed and was fleshed by BRENDON at LT1swap.com

His side kick Adam did my LS wiring harness.

The dual fuel tanks set up wiring was done by _________. (however I only have one tank hooked up at this time).

The truck starts good however it will rev up to about 2000 rpm's, if I don't keep my foot feathering the throttle it will slowly end up dying.

All of the Drive by wire stuff is stock GM, from a 2003 Tahoe, I got the ECU for the truck and the tach module, the wiring loom from the tach module to the accel pump and I also got the Accelerator pedal. No I do not have a fuel psi gauge in line on the fuel rails.

Picture below is my install.

Suggestions what to look for to keep her idling?