I have a F350 SRW 2wd with 4" exhaust and a Motorcraft/Donaldson intake. I currently run a SCMT at 90 hp. I have been looking at getting a PCM from Dp Tuner. I am not a fan of chips. Which would be the best all around program. I tow often and my gross is usually around 16k. My transmission is a stock 4R100. I don't want something that is gonna destroy it. Opinions?