gas mileage worse after chrome intakes., i thought it was supposed to get better? Options

[Tech9ine]

hey,
I installed this chrome intakes ram air on my ST a few months ago and since I've installed it I've gotten about 100km/tank less than i used to with my stock intake. Was I wrong in thinking the gas mileage would get better if not stay the same? could i have possibly done something wrong? (it's pretty simple, i don't think i goofed on anything.)

[QuintinGT]

warm air = better gas milage. but less power
cold air = more power but less gas milage

warm air gets better gas milage because it combusts easier wait before you jump all over me I said easier not better.

this also might explain some things i found it in another thread.

"MPG gain is 1 while percent increase is 5%.

6. Use Warm Air Intake: Modify intake to draw warm air near radiator rather than taking cold air from under the fender. This is an important change.

Advantage: Deliver warm and smooth air to the intake for best MPG. The smoother the intake flow, the better for mileage. The less turbulence, the better."

http://www.6gc.net/forums/index.php?showtopic=40453

http://www.lubedev.com/smartgas/ultra5.htm