So I was wondering if anyone on here have had one tuned to get better mpg because these these things drink like a camel. And what mods should be done before to to get best results?

2007chevy Tahoe 5.3 all stock

 

mileage?

change oil, plugs, fuel filter, air filter, 02 sensors

a cai and free flowing exhaust will help

everything needs to be in good working condition before you tune it

just a thought

 

140k all of it was done at 100k the truck runs flawless but has never been good on gas. Is tune worth it and what tuner would u use?

 

will it help gas mileage? it might, you will gain better driveability and WOT performance

i would look local first, try to get an in person tune. search google or ask on LS1tech

 

Tahoes are not light, do you have the 4 or 6 speed transmission?

 

4 sp it has always got 13-17 but a few more mpg would be nice.

 

I had Black Bear Performance do an in person tune on my '07 Tahoe. I get. 18.5mpg consistently but I do a lot of highway. That's with 22" wheels. Only other mod is an Air raid jr. intake Black Bear has them for under $130 shipped I believe.

 

What octane u running?

 

93 octane. I have the 89 tune though cause I'm an idiot. When I do some upgrades I'll get it retuned for 93

 

So running 89 tune how does it do?