I drive a 99 F-350 PSD. How does an aftermarket
chip effect reliability over the long run? Are other
changes, exhaust or intake, required to get the
advertised horsepower and torque gains? Are the chips
specific to the engine or would the way you use your
truck require a different program, ie towing a heavy
trailer as an example.

Thanks

 

The chip would not alter the expected life of your truck any different than a 4 abrrel carb would over a 2 barrel carb on a gas engine. Basically, all we are doing is: adding more air and fuel to the engine, changing the air/fuel ratio, changing the timing, and, hence, more horsepower. I would venture to say that your right foot has more to do with vehicle longevity than any performance mods. As to the different power levels on the chips: Yes the amount of gross weight, while towing, dictates how much power we can safely add. Most vehicles can safely run the 78hp chip with no problems. No other mods are necessary. Each chip is programmed for a specific code that is in each truck. Your code should be on the drivers door toward the front of the door. There should be a small white sticker with the code. The code should read something like: NVK4 MME6 PMT1
Three letters and a number. This code will tell us how much we can alter the operating parameters of your engine.
Hope that I have answered all of your questions. If not, give me a call at 1-877-399-6417. Tell us that you saw it on Ford-Truck Online.
Thanks
Danny