One idea...if you tape it, wrap it!

[cfg83]

Mario_Marques -

Originally Posted by Mario_Marques

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One question, your scangauge works independent from the car ecu?

Yes, but it only gets a subset of information from the ECU. It gets data from the OBD-II port that the ECU is required to give because of OBD-II specification. The scangauge does *not* get fuel-injector pulse widths, so it has to figure out the fuel consumption using a formula that is indirect.

"the scangauge has a formula that depends on a real IAT temperature."

If your car ecu manage the fuel mixture like the scangauge, could be real mpg values, it depends on how your ecu calc the air/fuel, i don't know how a aftermarket scan gauge work but i thing they probably use the same method as cars

I agree the car ECU uses the other sensors to manage fuel consumption. This would be very true in open-loop mode. But I think closed-operation is *the* dominant factor in my gasoline car :

http://www.autoshop101.com/forms/h58.pdf


More on closed-loop operation :

Answers.com - What is closed loop mean as in vehicle
Closed Loop Operation
Tech - Closed Loop

ShadeTreeMech -

Thanks for the diesel/gasser comparison information. I definitely think the mods effect different drivetrains in different ways. A mod for a diesel may not work for a gasser. The reverse is also true.

CarloSW2