While Bully Dog engineers could not come into your garage to fine-tune your motor, they devised the next best way to do it: performance control modules. Installing a Bully Dog programmer is like having your own mechanic living under your hood! Bully Dog control modules sync into your onboard computer system. Once your Bully Dog is installed, the advanced programming that Bully Dog's computer gurus have devised goes to work unleashing your rig's true power potential. Stronger towing, faster hill climbing, improved fuel economy will be noticable with Bully Dog's products. All this, and you can have on-the-fly control over your Bully Dog control module or programmer with an in-cab monitor.