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Old 02-20-2013, 11:52 PM   #19 (permalink)
The brake pedal is evil
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
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Originally Posted by 13B_88FC View Post
I'm not sure I quite buy that. An engine that is already at an operating temperature of 200 degree or more is not going to have problems igniting the charge from a "cold air" intake because by the time is actually gets to the engine, it's plenty warm. Maybe this wouldn't be true if temps are down below say 40 degrees, but still I'd have to see really solid data showing good gains to believe this is beneficial.

Cold air intakes are good for both power and mpg. A denser charge is a good thing.[Citation needed]
My Prizm has seen a 4 MPG boost from the WAI and my average temperature is in the 70's.
When I put the CAI back on, I see it drop back down to 33 MPG.
Half the problem is that the engine has a hard time getting up to operating temperature quickly.
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

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