can a computer chip help my 1996 454 Vortec motor truck looking for gas mileage

My Mechanic says that motor just does NOT make power, we have changed the spark plugs, wires, dist . cap and rotor, added a tpi spacer and cold air kit, change motor and rear end oil to synthetic, now just looking for a computer chip or programmer that will get me 2 to 3 miles towing my drag race car. What is your suggestion if any?

My suggestion is to dump the truck or find a competent mechanic.

Now that is a piss poor answer for some one that is trying to sell a product ?

I am not trying to sell anything. You wanted my opinion and you got it. Sounds like you have been wasting money on this pig. BTW. How much weight are you towing?

I will give you an example. I can tow a 35' travel trailer (10,000 lbs) up a pretty good grade at 55 mph (with the AC blasting) and still get fuel economy in the low teens with my 2002 F150.

Driving 60 65 I average anywhere between 5.6 and 8 mpg, if I reduce my speed to 50 55 I increase mpg to 10.3. I often hear people say they have better things to do than spend all day on the freeway !! However I am also less stressed, it may take longer to get where I am going but in the end the higher mpg saves money. Fact is on a 30 gal tank, I gain an average of 60 miles more per tank. That equates to an average saving of 6 gals and at an average cost of $2. 30 per gallon gives a savings of $ 13 .80 per tank full... Slow down and you'll do fine ..