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Old 07-07-2009, 07:32 PM   #195 (permalink)
Matt Herring
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Join Date: Jun 2008
Location: North Andover, MA
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Bone's 2010 Prius - '10 Toyota Prius Black
90 day: 56.78 mpg (US)
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I pulled my lower grill block the other day as temps were creeping towards 80 degrees. Today temps were in the mid-60's and I noticed a substantial difference in warm-up time. I had been up to temp in 2-3 minutes but was in the 5 minute range today.

I also noticed my max temp was in the 180 range where before it was in the 190 range. I have the foam in my trunk so I guess I'll play it day to day as to have it in or not. It's only a 2 minute difference in warmup time but it is a hit to FE.
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