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Old 03-31-2017, 08:41 PM   #11 (permalink)
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Join Date: May 2009
Location: Australia
Posts: 1,273

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 43.3 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 34.78 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
90 day: 34.93 mpg (US)
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The car's ECU knows what the AFR is, the OBD gauges don't. That's why the onboard gauge is actually more consistent than than any OBD gauge. The onboard gauge might be 0.2l/100km optimistic (as it is in my Trafic and Prius), but that's better than OBD gauges that go +/- at random as they only have the MAF sensor to go by.

I drive off the onboard instantaneous display, SG is great for it's automatically resetting short trip meter (even if it's only semi accurate), and gives me a load gauge and water temp - that new cars usually omit.


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