My truck used to get around 18mpg, now it's getting 13-14mpg after the LS1 cam and e-fan install I did almost 2 years ago. I'm looking to get a tune to get some of that mileage back. For anyone who has gotten a fuel economy tune, who did you go to and what were the results? Right now I'm leaning towards an AutoCal tune from BlackBear. Fuel economy is my #1 concern, improved drivability is #2 (shift points, firmness, etc), and increased power is a distant 3rd. I would even be fine with losing a small amount power if I gained mileage. This is my commuter truck.

Thanks

 

Roll the dice.. BB. Wheatley, nelson.. All top notch tuners..

 

Yep, can't go wrong

 

Im also interested in this... My new truck it a 2006 CC with a 5.3l and 3.23 gears I put 28" wheels on it (33.75" tall) and it actually gets pretty good fuel economy... 18.6 average going off the clusters amount of fuel used and miles driven times .15% for tire size over stock... I drive 30 miles 1 way to work with 20 of them being 55-60mph and last 10 being 70-77mph... Driving 55ish it gets around 19.2mpg and 75ish is around 17mpg... I drive very easy to get MAX MPG's

I definatly cant loose any power....lol but would like to see exactlt what a tune for fuel economy could do for me...

What tuner has most/best experiance at fuel economy tuning on 100% stock trucks?

 

Pics of these 28" wheels!

And those three aforementioned tuners are all more than capable of tuning your truck. I picked up 3mpg over stock with my Wheatley tune.

 

Im on my phone cause we havent gotten the enternutz hooked up at our new place... Text and you shall recieve pic of said 28s...lol
,,6012996639

 

Change your Fuel filter! try that too

 

Did that. All engine-related maintenance is up-to-date.

 

I would vote a tune in person if you have any good local tuners. If that is not an option the next best thing would be AutoCal tune from BlackBear. Just do some research on who you are going to use, just keep in mind if someone is a sponsor on any forum you probably wont find any negative things about them on that site.

 

my truck is just about bone stock and after the tune i picked up about 3-4 mpg.. for what its worth, that was the performance and not the economy tune