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Bicycle Bob · 03-25-2009, 01:50 AM

You get more air through a smooth duct with rounded edges, and one has less drag than two. It might be worthwhile to get an indoor/outdoor thermometer, and put the probe just behind the rad.

03-25-2009, 01:50 AM	#5 (permalink)
Bicycle Bob EcoModding Apprentice Join Date: May 2008 Location: N. Saskatchewan, CA Posts: 1,805 Appliance White - '93 Geo Metro 4-Dr. Auto Last 3: 42.35 mpg (US) Stealth RV - '91 Chevy Sprint Base Thanks: 91 Thanked 460 Times in 328 Posts	You get more air through a smooth duct with rounded edges, and one has less drag than two. It might be worthwhile to get an indoor/outdoor thermometer, and put the probe just behind the rad.