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Old 08-03-2009, 12:17 PM   #10 (permalink)
ConnClark
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Join Date: Jun 2008
Location: Richland,WA
Posts: 985

Das Schlepper Frog - '85 Mercedes Benz 300SD
90 day: 23.23 mpg (US)

Gentoo320 - '04 Mercedes C320 4Matic
90 day: 22.44 mpg (US)
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Quote:
Originally Posted by nubbzcummins View Post
Update: Just added a new fuel log with the 33ohm resistor between signal and ground on the map sensor. Idle voltage sensed was 1.18v vs 1.28v normal and max sensed on grades at 55mph cruise is 1.91v vs 2.32v normal. Managed 21.71mpg and 800.3 miles this tank. For my next tank I have it set to where idle voltage sensed from the map sensor signal is 1.1v and max on grades at 55mph cruise is 1.3v. Doing well so far as it seems to be doing slightly better than my last tank. Will have another update in about a week.
Doing one tank and changing a variable isn't a valid test due to not filling the tank to the same level each time. You need a minimum of at least three tank fulls on each configuration to draw any remotely valid conclusion.
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