Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Any ideas on how to accurately measure mpg’s on an older car with a carburetor?

slowmover · 10-31-2011, 02:53 PM

Have a look at fuel flow meters for marine engines ($$$, though, such as FLOSCAN). The trio of driver gauges would be:

Fuel Flow
Vacuum
RPM

Additional would be:

Airspeed

Depending on the car there are (or were) spark timing adjustment boxes (MSD, and others) where one can advance or retard ignition timing. With the above gauges (and maybe a knock sensor) can can "lean out" the engine for best cruise parameters.

Some of the "feedback carbs" worked in a similar manner.

What kind of car is it?

EDIT: I see you are aware of marine fuel flow meters.

.

10-31-2011, 02:53 PM	#3 (permalink)
slowmover Banned Join Date: Oct 2009 Location: Fort Worth, Texas Posts: 2,442 2004 CTD - '04 DODGE RAM 2500 SLT Team Cummins 90 day: 19.36 mpg (US) Thanks: 1,422 Thanked 737 Times in 557 Posts	Have a look at fuel flow meters for marine engines ($$$, though, such as FLOSCAN). The trio of driver gauges would be: Fuel Flow Vacuum RPM Additional would be: Airspeed Depending on the car there are (or were) spark timing adjustment boxes (MSD, and others) where one can advance or retard ignition timing. With the above gauges (and maybe a knock sensor) can can "lean out" the engine for best cruise parameters. Some of the "feedback carbs" worked in a similar manner. What kind of car is it? EDIT: I see you are aware of marine fuel flow meters. .