Mods to help MPG?? - 2022 Z71 Tahoe

[Chump9]

Just purchased a 2022 Z71 Tahoe. Put 295/60R20 tires on it (34.5”) and a 3” ready lift. It has completely destroyed our MPG. Around 12.5 mpg. I’m getting better mileage in my Ram 1500 with 35’s and a 6” lift. Does anybody have any suggestions on how to help? Looking at potentially putting a chip/programmer on the Tahoe to help. We need to get back up to around 15-16 mpg.
Thanks!

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

I'm thinking that the heavier tires and the increased air resistance due to the lift may be negatively impacting your gas mileage. I doubt that any installed devices will significantly improve your gas mileage. Unfortunately, the most effective method to increase gas mileage is to better manage your foot on the gas pedal.

 

[jfoj]

Not many "mods" are going to drastically improve fuel economy.

12.5 MPG seems quite low. What engine does your truck have?


City/State you live in?
How much city/stop and go are you in?
Do you remote start and allow the truck to warm up?
Have you confirmed the operating temperature is typically around 205F? If the thermostat is soft and the engine is running cool, your fuel economy will suffer drastically.

Keep in mind when the engine is idling and the truck is not in motion, it gets EXACTLY 0 MPG which is then averaged into any distance the truck travels.

When on the highway what is your typical speed?

Bring up the MPG Average dash display and set it to 50 Mile Average and watch the instantanous MPG you are typically getting.

Take a picture of the dash after 50 miles and post it for reference.