What isthe original use
 

So I finally got my chip installed (wow). When I was doing it I was wondering why Ford included this slot in the first place. I can't believe it was to support the aftermarket.

Congratulations. I am hoping to pull the trigger on one real soon. What tunes did you get? I hate to sound ignorant, but does the truck drive that much differently? I've never even ridden in a tuned our chipped truck, so I just don't know what to expect.

It is quite a bit different. I can't believe that one thing can make such a difference compared to the other things I have done. One of my positions is stock so I switched it back just to check - almost night and day.

Thats awesome, here's hoping I can work it out to get one soon. I'm tired of waiting!

I'll have a better review probably next week. I will have a chance to use the truck for what it is intended for, towing and hauling. So far all I have is a little test run going to the store

I will be waiting anxiously for the post-towing and hauling review :D