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SoCal Driver SoCal Driver is offline
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Join Date: Feb 2002
Location: Costa Mesa
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The tach's on the 944's all come off of the coil wire from the DME.

The fuel use gauge is driven by a signal from the DME (it seems to be the injector pulse width) and a hall effect sensor off of the back of the speedo on the early 944's.

The 924S is basically an early 944 with out the fender flairs. Thus the speedo comes off of the left front well via cable. So you could have the fuel use gauge if it was wired in.

The miles per gallon is for 5th gear -- stock tires. The gallons per hour is for any gear.

I seldom pay any attention to mine. It's fun to show your passenger that you are getting over 40 miles per gallon at 80 MPH -- when you let off the throttle just a little when going down a slight hill.
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Old 10-10-2003, 08:12 AM
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