Its yours so do like you please.... But that 6.4 is about maxed out as it is.... If you're not having to take it to the shop every week, then I believe I would leave it be, it ain't what the old 7.3 was. Start hot rodding that 6.4 and you'll be driving the Freightliner all the time!!!

http://www.thedieselstop.com/forums/f45/new-ford-tsb-08-6-4l-aftermarket-intake-exhaust-chips-158215/

I was afraid of that..............

Thanks for the info. I use my six way on the lowest trailer setting and love it. No necessity for a higher setting even on the steepest hills I've encountered. Don't want to return to a stock motor. Heard about the same $10k for a replacement motor. Five years now on the chip, driving the 7.3 as easy as possible using the torque, proper warm ups and cool down periods with synthetic lubes. Hope it continues its trouble free ways.

I've never owned any brand truck but a Ford. With the new Navstar/ Ford diesel issues, I don't think the next one will be a blue oval.

Gard

I do not seem to be having any power issues at the present. I was told that the chip that plugs in to the diagnostic port under the dash would be telling me everything the truck was doing and recording it. It has been in the shop several times for engine issues, they say there are no codes being thrown and they can't duplicate them.  I even took them the truck and the trailer that it was pulling when something hung up under the hood causing it to burn thru a full tank of fuel from Shawnee to Ft Smith! They found no codes! Kept the rig 4 days. Although it is performing good right now, I suspect that is only temporary. I thought it would give me piece of mind knowing that I could go back to them and say, here....this is what it did, how long it did it... now fix it! Every trip out with a trailer, this truck has had engine related issues except the last two local short trips. I backed into a curb with both back tires 2 weeks ago. Since then, my mileage went as high as 14mpg without a trailer and has held at 9mpg with a 3H LQ for the last 200 miles! But, then the truck tripped 10K in the last 2 weeks also.

So I really do not want to mess with the engine for more power, I was just looking for something that could warn me as to a problem is going on before it leaves me stranded by myself at nite with livestock.

(quote)... I even took them the truck and the trailer that it was pulling when something hung up under the hood causing it to burn thru a full tank of fuel from Shawnee to Ft Smith!

No, that's something hung up underneath the rear of the truck....Them tall, 4.88 gears!!! I would imagine that your truck just mashes the hills, but I bet the Freightliner is just as good, if not better on fuel than the F-450. I stopped by and looked at this one yesterday.....  http://www89.forddirect.fordvehicles.com/Dispatch.jsp?__action=&__action2=&.CurrentState=SearchServiceZipCode&DispatchBindingSet=zipcode&zipCode=27803&processZipCode=ToVLS&statetoken=

First thing that came to my mind was your post.... Got into my ole' gas burner Chevrolet and came on home..... Woke up this morning with no "Buyers Remorse"!!

You may be confusing the function of a  "chip" with that of a diagnostic reader. A chip replaces the MEC computer's functions, with modified instructions that improves the engine's power and mileage. In addition, it will change the transmission shift points, and the torque converter lock up. The modified chip physically replaces the factory installation, and if it has variable settings, an external switch or touch pad will make the options available to the driver.

There are programmers that can plug into the port, and have the ability to change some of the computer's factory settings.

A reader, as you stated, digitally illustrates the fault codes stored within the computer's memory, for engine or accessory trouble shooting. It is not used for programming, and will not change the stock settings.

Gard

Ah, I should have mentioned my one ton is a 2000 model.

I think a $10,000 dollar replacement cost for a ford engine would be a bargain. My 2004 6.0 engine was replaced at 60,000 miles for $17,000 dollars. The warranty covered the replacement cost but the substantial income I lost was incidental and therefore not recoverable.

I wouldn't chip a ford engine under warranty. It's been my experience with three ford 550's ('99 V-10, '04 6.0, & '08 6.4) that you will probably need the warranty.