Originally Posted by SixOhPowerstroke
What would be a safe, decent tuner for a high mileage truck? I have a 99 7.3 that has been stock for 288,000 miles. Except straight piped. Transmission seems healthy
My tuck has over 246,000 miles and I just had a PHP Hydra installed about a month ago, it's a new truck!!! It's fun too drive again, you will be amazed at how under tuned the truck is. I have the 40,65hp tow tunes along with the 65,80hp daily drive, and the 80,100hp perfromance and then the 120hp race. I've been playing around with the different settings, the first tank of fuel was with the 80hp daily drive, and my fuel mileage increased just over a 1/2 mile too the gallon. Then this last tank was in the 100hp performance and my fuel mileage increase was just over 1 mile per gallon increase, so this tank I'm in the 65hp daily drive because this setting is where I plan on having the truck set in all the time. I'm not into beating on the truck, so I'm hopefully going too see a nice long life, and I'm still on the original injectors and everything, the only thing that has been changed is the transmission, and then replaced the tranny cooler with a 6.0L, everything else is stock. Oh a 4"exhaust and intake by Airiad.