The supplied USB cable, OBD cable, and the in Tune itself are required. If doing more than one vehicle, another in Tune will be needed.The first thing you will want to do is gather the supplied USB cord and plug the in Tune into the computer.I own a 04' Silverado 5.3L 4x4 crew cab and Ive taken it upon myself to increase performance and hopefully along the way gain some MPG.This is what I have done so far: K&N FIPK Series 77Gibson Catback Duel Sport Exhaust Hypertech Power Programer III (Tuned for 87 Octane)Airaid Throttlebody Spacer MSD 8.5mm Sparkplug wires and Iridium Plugs Granatelli MAF sensor With all of this I have awoken the beast that resides within the 5.3, but I feel there is more.Replacing a 350 gasoline engine with a diesel will require major modifications.
I'm looking at replacing the vortec 350 in my truck with a 6.5 turbo diesel.KICKER Vehicle-Specific Solutions (VSS™) are factory-engineered to fit in a specific vehicle make, model and year.Use this drop-down menu to find the VSS Upgrade that fits your car, truck or motorcycle. KICKER delivers the thrill and musical accuracy of a live-concert experience, putting a high-performance audio experience created for your specific make and model of four-wheel or two-wheel vehicle.As well with controlled driving I have achieved close to 18MPG city, no good numbers on the HWY as of yet. Headers is pretty much the limit of simple bolt-on power adders.I am considering headers and dont know if I should go shorty or long tube. Is there anything else that can be done bolt on that anyone would recommend. You might be able to get more power through repogramming your ECU, but you would have to switch to premium gas.