[Dibsing]

Ok Ive got a question. Does the ECM regulate gas flow into the engine, or is that a totally different thing, because now, the truck when i first start it runs rough and evens out eventually, but i just jump in a go, i run the risk of it stalling when i downshift, and i know that I'm shifting corectly. I had the injectors cleaned and the fuel system cleaned from tank to injectors, filter was done about 3 months ago new air cleaner and it had a total tune up about 5 months ago. this is the only serious problem I have with it besides my dash is messed up and the spedo can only go up to 60 km before getting stuck and wont come back down even if im stopped or my signal lights are turning on when i turn on my lights or brights.....