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Old 02-09-2011, 03:40 AM   #13 (permalink)
redpoint5
Human Environmentalist
 
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Join Date: Aug 2010
Location: Oregon
Posts: 12,396

Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 26.68 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)
Thanks: 4,192
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If I do any mod more involved than a simple grill block, it will be to add a taller final drive to my TSX. I'm turning 3000rpm at 70mph, which is fairly disgusting, especially when you consider how naturally slippery my car is (.27 Cd).

Question-
Why is it necessary for an engine to burn rich while cold? I've never understood why choking an engine allows it to start, because intuitively you would think providing at least enough O2 to completely burn the fuel would be ideal.

Quote:
Originally Posted by KITT222 View Post
Okay, first person to make an exhaust-heated car heating system wins... something. Go!
I suppose it would provide heat sooner than waiting for water to heat up, but you don't want to steal heat from the exhaust for efficiency and emission reasons.

If we really want to talk efficiency, then we must acknowledge that heating our environment for comfort is extremely inefficient when all that is required for comfort is a regulated micro-layer of air next to the skin. In other words, put on warm cloths.

Whenever I hear the furnace turn on at home, I just think how silly it is to heat thousands of cubic feet of air when less than 1ft is sufficient for comfort. If I didn't have roommates, I'd set the temp at 55.
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