I've enjoyed some success with aero mods ( grille block, wheel deflectors, R mirror delete) to my car ( 2000 Jaguar S-Type, 3 liter, AT) and have been getting 28+mpg in commute driving and up to 36+mpg on long trips. As my next mod I thought I would try installing a warm air intake.
I removed the airfilter box and and removed the cold air duct from the airbox to the L wheelwell. I put a section of duct hose from the airbox to the exhaust manifold heat shield. The mod took about 25 minutes. I finally drove the car today and was curious if I would notice a change in responsiveness. I drove abour 50 miles today and didn't notice any decrease in performance. I don't have a scangauge so I don't know so far how much I have increased the temperature of the intake air. My instant MPG readout seems to indicate a slight increase in FE but I'll have to confirm this through a few refills. The modification would be very simple to reverse if it doesn't prove benefical. Time and testing will tell.
: a psychological condition or a relationship in which a person is controlled or manipulated by another who is affected with a pathological condition (as an addiction to alcohol or heroin) ; broadly : dependence on the needs of or control by another
That is the way the factory WAI on my buick and Rusty operate. It sucks warm air from inside the heat shield.
that's different. the shield is only there to draw air across the manifold, mainly in cold weather. there's also a door in the intake tubing somewhere that will open and close based on temperature in the air cleaner housing. it's not for a WAI it's for a constant temp intake. on my truck it aims for about 105*f according to the repair book. carb and TBI and a few port FI cars all have them. leaving this intact will usually give you the best results since most engine's with this setup deal with temperature change very poorly.
1991 Toyota Pickup 22R-E 2.4 I4/5 speed
1990 Toyota Cressida 7M-GE 3.0 I6/5-speed manual
mechanic, carpenter, stagehand, rigger, and know-it-all smartass
"You don't get to judge me for how I fix what you break"