If you are after the best custom tuning you can get for towing, driving to work and drag racing (with a little smoke when needed) that is the chip for you.*Switch on the fly tuning, fully custom to your truck no matter what your modifications are and free tune revisions for 30 days after purchase.Included:PHP Hydra Chip, Selector, Ribbon cable, brush & pad for cleaning PCM and cable for loading tunes in the future. Six 1023 Diesel Custom Tunes set up for ANY modifications you have done to your truck. 30 Days of FREE Revision support on all tunes receivedCustom Tune Options:Daily Light - This Is your 'stock power' calibration to tame down your injectors to run as close to stock power as possible.No Start - This Calibration Will keep your engine from starting by turning off fuel, your truck will not start in this file but will run Like Stock if switched to this position after the truck is already running.High Idle - This Calibration Holds the engine speed to your desired RPM for warm-up, AC, Inverter use, etc.Quiet Idle - This Calibration Lowers your idle RPM, Injection pressure and Pulls timing at idle to produce the quietest idle possible.Daily Driver - This Calibration is extremely clean with lowered shift points and pressures for smooth operation but offers a responsive pedal and some pep if you need it. We typically see the best fuel mileage from this file.Heavy Tow - This calibration offers the best shifting and torque converter lockup possible for towing and keeps EGTs in check for any load. Perfect for towing up to the max tow rating of your truck.Medium Tow - This calibration offers the best shifting and torque converter lockup possible for towing and keeps EGTs in check for any load. Perfect for towing Larger boats, Small fifth wheels or similar.Light Tow - This calibration holds the same transmission strategies as the other tow tunes but with more aggressive fueling and is best suited for towing small trailers or bed loaded campers.Street Shredder - Now we start having fun. This calibration is more aggressive than the daily at lower throttle input, shift points are higher to keep you in the powerband, and at high throttle input the torque converter will lock up in second gear to get all your new found power to the ground. This file is aggressive but still very clean and daily drivable. Max HP and smoke is also going to be greatly determined by your choice and turbo in conjunction with your injectors.Cummins Killer - This is your all out, empty the injectors and race a ricer file. Great for the drag strip and dyno. This one will smoke and is extremely aggressive. Max HP and smoke is also going to be greatly determined by your choice and turbo in conjunction with your injectors.Cummins Killer Lope - This calibration is the same as your regular Cummins Killer file but will lope at idle. (99-03 trucks Only)