OB gearheads, cold air intakes

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Anyone particularly better than the rest?

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OEM is as good as you can do. To flow better you have to let more crap through or be significantly larger.

You need to correct your speedometer/odometer for the larger tires for accurate mileage numbers.

You aren't getting that fuel economy back from bolt-on stuff.

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The weight is likely what got you more than the size. Factory intake warmer air is better fuel economy.

Colder air is denser. More air means more fuel.

More fuel means less mileage.

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I thought the whole point of introducing denser air is more complete fuel combustion and higher efficiency

Cold air intake will growl a bit more, which will make you drive more aggressively to hear the growl, which will kill any “mpg gain” you were expecting.

Also, the rule of thumb used to be cold air intakes were useless when paired with OEM exhaust. More air in requires more air out.

For what it’s worth, my Tundra has had a CAI since I’ve owned it. I love the sound but I do not believe it has any impact on MPG.

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drive like a grandma

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This is all you can do easily. The skinny pedal pumps fuel so use it less.

Going back to OEM size street tires will help more than anything as far as changing parts goes.

Your fuel mileage didn't go down as much as you think, the odometer slowed down with bigger tires too. When you factor in a correction your mileage will still go down but it's not as much.

On my F150 when I put my 35's on it (winter mud grips) my mileage goes down about 3-4 mpg and my speedometer is off by 7% slow. So if I take the mileage I'm getting with the 35's and add 7%.

It does take more power to turn bigger tires, no way around that

dont waste your money. at most just get a KN drop in replacement

Your fuel economy will go way down. Mine did with a 5.3 put stock back on went back up.

Don't forget you already have a cold air intake, the box draws air from outside the engine compartment