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Old 08-19-2009, 05:52 PM   #461 (permalink)
Demonhawk
EcoModding Lurker
 
Join Date: May 2008
Location: Humble, TX
Posts: 26

My Jetta - '99 Volkswagen Jetta
90 day: 22.69 mpg (US)
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The freescale chip is being powered from the obd port. The only difference I have in the diagram is rather than having the power from the obd go to freescale chip and the arduino I just have it going to the freescale chip. All the grounds from the obd port are grounded to the freescale chip and the arduino as per the diagram. I don't know if it makes much of a difference but the power from the obd connector in my car is 13v instead of 12v.

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