Ins.MPG wrong on OBDII scanner (via Dashcommand)

[cprobertson1]

So! Got an interesting problem here!

Dashcommand is reporting that my instantaneous MPG is absurdly high (in the hundreds of mpg at 60mph on the motorway, I doubt it!). What confuses me is that the average MPG reported by dashcommand pretty much matches the dashboard display - its just the instantaneous MPG reading that's off!

I've tried to confirm it by cross referencing it against torque - at which point the instantaneous MPG is much lower than what the car reports - but, again, the overall average matches what the car's dashboard says.

Has anybody else had similar problems?

Ps - I'll contact the folks who make DashCommand at some point - was just curious if it was a common problem!

[cprobertson1]

Ah, Brake Specific Fuel Consumption (BSFC) and/or volumetric efficiency are likely wrongly set - just need to dial them in... However that's done...

...To the forums! ��