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confirmation of grill blocking without Scangauge

Discussion in 'Gen 2 Prius Accessories & Modifications' started by Bob Allen, Nov 13, 2007.

  1. Bob Allen

    Bob Allen Captainbaba

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    This morning, I noticed a drop of 4mpg on my MFD readout. Got to thinking that maybe I might have lost one or more of the foam grill inserts, and, if so, wouldn't this be a reverse confirmation that grill blocking works?
    Sure enough, one of the two inserts in the lower grill had come loose. I replaced it and used cable ties to hold them in place. Full grill blockage gives me 50mpg or so, which I never got in fall/winter before. Outside temps here in Seattle are high 40s low 50s midday.
    Bob
     
    #1 Bob Allen, Nov 13, 2007
  2. Rangerdavid

    Rangerdavid Senior Member

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    Hi Bob,

    At those temps you should be fine. I've heard of people leaving the grill blocked with temps up to 65 or so.
     
    #2 Rangerdavid, Nov 13, 2007
  3. ilusnforc

    ilusnforc Member

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    Better be careful, efusco reported some scary numbers from the scan gauge recently with outside temps in the 50's.
     
    #3 ilusnforc, Dec 13, 2007
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