Mileage, I know, U own a Yukon XL...

[John Day]

So my Yuk gets around 17 MPG in the city, sometimes less, sometimes more.
Will a tune improve MPG or just performance.

2019 Yukon XL SLT with L83 (5.3L, SIDI WT, E85 Max, Alum), 3.08 Posi Trac, & a 6L-80 6 spd trany.

I know MPG and YukonXL do not belong in the same sentence or paragraph, but asking just the same.

The picture is what I see as I drive down the road..

 

[91RS]

Dang! I’d love to get 17mpg!

 

[FrankU]

Good B/B tune will improve performance & drive ability quite a bit. Additional MPG a little bit , more if you can keep your foot out of it.

 

[OR VietVet]

I would love 17 MPG in the city.

 

[John Day]

I would love 17 MPG in the city.

I’m 65 yes old. My heavy foot has shriveled some. “)

 

[OR VietVet]

That's what it takes sometimes. I still drive the crap out of mine, at times.

 

[John Day]

That's what it takes sometimes. I still drive the crap out of mine, at times.

Me2. I put a Spectre CAI on her. Now I can hear her purr some. It makes me want to hear it tho. Dang it

 

[OR VietVet]

 

[John Day]

Now that's funneeee right there.

 

[OR VietVet]

I knew you would like it.

That dog one cracks me the hell up every time I see it.