Airbox Mods

[Daox]

As the others have said, if you're looking for better MPG, warmer air is better in general. However, it will lower your horsepower a bit.

The general rule is a 5 degree drop in air temp equals 1% horsepower increase due the increase in air density. This means it also works in the other direction as well. Every 5 degrees means 1% less horsepower. Less horsepower increases engine load, and higher engine load for the same power output means increased engine efficiency.

[foama]

For mpg gains, you might want to look at ecomodder.com

We have a how-to called

https://mirageforum.com/forum/showth...ment-when-cold

to increase mpg during warm-up.