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Old 03-16-2010, 08:09 PM   #202 (permalink)
hackish
Calibration Engineer
 
Join Date: Jan 2010
Location: Canada
Posts: 86

Subie - '00 Subaru Impreza STi JDM
90 day: 22.49 mpg (US)
Thanks: 1
Thanked 18 Times in 14 Posts
All cars sold in Canada since the early 1990's must have DRLs so I find it sad when someone wants to remove a device that will ultimately improve their safety and the safety of other road-users. For the sake of a few pennies of gas per tank.

One other important point is that a reduction in fuel consumed does not always equate to a reduction in pollution created. For example, adding a few degrees of ignition timing during cruise may make an extra 1mpg but the NOX emissions go through the roof!

At this time I can't justify the cost of a 5 gas analyzer to prove it but I believe repeatedly shutting your engine off while driving to save a few drops of fuel is ultimately producing a LOT more pollution. (Cat drops below the necessary temp for operation, O2 sensors are inactive for 20-30 seconds after restart, startup emissions etc etc etc.)

-Michael
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