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Old 12-18-2009, 04:06 PM   #140 (permalink)
orange4boy
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Join Date: Aug 2008
Location: Vancouver BC
Posts: 1,124

The Golden Egg - '93 Previa DX
90 day: 31.91 mpg (US)

Chewie - '03 Prius
90 day: 57 mpg (US)
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NV=envy

I wish a PHEV conversion was as simple in the 2003 Prius. I'm looking forward to yours.

I think the coolant hack must have some emissions downsides as you are telling the ECU that the coolant is warmer than it is. I'd rather just preheat as much as possible. I will probably have two coolant heaters set up eventually.

Bob has done this hack and probably knows the emissions angle.
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