Can I make a suggestion? Your going to spend 400+ for a used ECM with stock tuning then run your PPE programmer on it. Your PPE could sell for 300 or more and cover your purchase of a EFI Live tuned ECM with 5 tunes that are switchable on the fly. You have the choice of the tunes you want to be made, (ex. 1-Stock, 2-tow, 3-Daily Driver, 4-Street Performance, 5-anti theft) It can be made custom for your truck and the modifications you have. You might want to consider this as another option!
Sorry, I don't mean to hijack the thread, but a no start tune, you basically just have to switch it to another tune and it'll fire up?You can have it setup many different ways. Some ask for a NO START. Others ask for NO THROTTLE RESPONSE. And there is a valet style with limited fueling/RPM's so speed is a no go. Lots of options for anti theft with EFI Live.
EDIT: I want to add some more cool info. If you have a 04.5'-10' you can even ask for a different sounding idle. No turbo wistle like the LB7! You can have it on any of the settings or all of them. Pretty cool if you ask me!
It should hiss for a bit no matter what on a cold start then go away depending on the tuning. As long as you can put it back to stock and it cycles back and forth every 5-10 seconds or so your fineIt's normal for my truck to rumble most of the time and then every once in a while it'll hiss momentarily and then go back to the rumble?