2014-2021 Chevrolet Silverado/GMC Sierra Top Ways To Increase Fuel Efficiency - Phastek Trucks

Change the grill

What tire size and offset? It looks good!

Does the AFM void the manufacturer warranty?

I’d really like to see a comparison of all this added to a truck versus all stock.
I bet it doesn’t improve it +1 mpg in real life with same driving habits

Please tell me you did not just recommend a throttle body spacer? I can agree with all except that because there is hardly no benfrom a throttle body spacer.

Will the range afm+ module drain the battery with the truck off?

I installed a Cold Air Inductions Cold Air intake and a throttle body spacer that I got from American Truck and actually saw my gas mileage go DOWN by 3 mpg. I used to get 18mpg( over sized tires and a muffler delete) on my 2021 Silverado. Now, I get 14-15 mpg with the same driving habits. Could I have installed wrong?

Is that stock height

Can you provide a link or more info on the range afm. I’d like to learn more. And purchase one.

😂 what a joke this video is , the spacer will not increase gas mileage, also. So of those cold air intakes are actually more restrictive than the factory filter ! The only thing that matters s actual is making sure ur tire pressure is correct

He forgot plugs and wires to !!!!! And exhaust leaks

I have done all that!! And it did not help at all!!!!😂

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AFM plus yeah ok goodbye afm lifters faster at 150k

Weak no proof.