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1a. Throttle Body TuningBefore moving on to the next set of parts, I wanted to fire the truck and make sure the TBI unit was working properly. That way, I would know where to look for any issues that might pop up. Thanks to the Haynes guide, I had a complete step-by-step walk-through for the initial setup of a new TBI. The IAC valve, TPS, and idle need to be set, but first I needed to make a small jumper wire.