Re: Tips for getting more MPG!!
Remove any cold air intake. If you let the engine ingest hot engine compartment air, it'll lean out the engine like a hot summer day. This saps power, but the MPG increases since you're using less fuel. Engines run richer with colder weather/air, since the air is denser.
Cold air = dense air = rich
Hot air = thin air = lean
It's an automatic adjustment in the ECU based on input from the intake air temperature sensor.
Some empirical data:
Cold air, 1GR 4.0L, 40psi front and rear: 58 deg F intake air, 16.7mpg avg
Hot air, 1GR 4.0L, 40psi front and rear: 102 deg F intake air, 20.6mpg avg
A 23.35% improvement.
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2005 Tacoma Double Cab V6 4x4 w/ TRD Off-Road pkg., Auto
1991 MR2 V6 (1MZFE)
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