That's the way I look at it. By using cheap gas you will not save a whole lot. It's just not worth it to go back to stock IMO. Plus, there's too much trash in low grade gas. Just take it easy or buy a beater, then you would come out ahead.

 

If you want to have a real difference, then sell the truck and buy a car that gets 30 MPG or more.....otherwise, you're doing a lot of work for very little return. The labor and cost of removing mods and going back to stock to save 1-2 MPG and $.20/gal will not be that big of a deal. The problem is overall gas prices, not the difference between 87 octane and 91 or 93 octane.

 

the only thing Ive found with tuning is to get the ve and maf spot on, lock the converter to stay away from 2500+ rpms while cruising and use the cruise control as much as possible (there are lean conditions for fuel saving that are only activated by cruise control). Ive read articles on acetone that say just the right amount works, too much and it reduces mileage Ive got a nifty chart havent tried it yet though.

 

Keep in mind that the most crucial criterion for our motors is to keep the RPM's between 1800 and 2000 RPM's while cruising, which is the reason why my switch to 4.10's is biting me in the *** more and more as prices go up.

My next fill-up will be my first where the price will be over $3.00 per gallon. As I was driving around yesterday I saw Diesel at $3.27 and 91 octane at $3.17.

 

just hold off on mods for a couple of months or stop blowing trannys and buy a beater, lol

 

Dont de-tune your truck, its not worth it!!!!
I struggle with going an extra 10 miles to get gas cheaper by 10 cents a gallon in the next town and adding up all the pennies it would cost me more to go to that town and back than an extra gallon at the higher price.

My truck now gets about 2-3mpg better with the turbo than stock. Not that it pays for itself, but its still better than stock as far as power and mileage.

I also did the math on a new Honda Accord with the 250hp V6 vs an Accord with the 250hpV6/15hp electric kicker motor. The mileage gain from the kicker motor was about 8-10 mpg and it still takes about 5 years to pay back on mileage gains.
Hardly worth it after 5 years of owning anything+depreciation.
DONT DO IT MAN.