Don't know the actual answer, but my opinion under normal/leisurely driving
a turbo should help since it require no power from the engine to increase
horsepower and torque. A supercharger on the other hand may help but maybe
not as much depending on engine since it requires a direct mechanical
connection to the engine. Myself, I believe that to a limited extent the
more HP you can make, at less RPM's, and the easier the air goes in and back
out the better the fuel economy you will have. At least this is what I tell
the wife to convince her of getting new parts for the Durango. She says
when I have the money go ahead. Someone with more actual experience may
prove me wrong. Of course in the beginning the MPG's will drop because of
having fun with the newly added power. Just my 2 cents. May not even be
that much.
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Barry Oliver
Sent: Sunday, August 21, 2005 1:13 AM
To: dakota-truck@dakota-truck.net
Subject: DML: SuperChargers, Turbos and fuel consumption
I understand the purpose of a SC or a turbo is not to increase fuel
efficiency, but how bad does one hurt you? Anecdotal evidence suggests
that turbos actually help some diesels with fuel efficency - or at least
require less fuel for a given power level than a comparable non-turbo
motor. On a Gas engine, how does a [properly tuned] Supercharger effect
your fuel consumption during normal driving? Obviously if you are WOT
racing, you don't much care, but on a daily driver, much more time is
spent just droning along...
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