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skewbe · 10-06-2007, 04:09 AM

You might want to convert tSpeed from kph to mph

Quote: Originally Posted by Erorus

PHP Code:


  
   
Function GetMPG(tMAF As Variant, 

   tSpeed As Variant, tLTFuelTrim As Variant) As Variant ...

The problem I have with this is the air flow sensor is very optimistic, and you probably run richer than this formula indicates. It says I average around 60-90MPG when cruising on the hwy and up to 200+ MPG when coasting. However, it does change when you have the pedal down, etc. I forget where I stole this code from.

Quote: Originally Posted by stevieg

It looks like my botched attempt at MPG conversion I think.

I didn't think it was accurate as it could be either, and haven't actually used it in real-life.

Any idea what could be done using the OBD to get a more accurate measure?

10-06-2007, 04:09 AM	#22
skewbe Newbie Join Date: Jul 2007 Posts: 3 My Photos: ()	You might want to convert tSpeed from kph to mph Quote: Originally Posted by Erorus PHP Code: `Function GetMPG(tMAF As Variant, tSpeed As Variant, tLTFuelTrim As Variant) As Variant ...` The problem I have with this is the air flow sensor is very optimistic, and you probably run richer than this formula indicates. It says I average around 60-90MPG when cruising on the hwy and up to 200+ MPG when coasting. However, it does change when you have the pedal down, etc. I forget where I stole this code from. Quote: Originally Posted by stevieg It looks like my botched attempt at MPG conversion I think. I didn't think it was accurate as it could be either, and haven't actually used it in real-life. Any idea what could be done using the OBD to get a more accurate measure? Last edited by skewbe : 10-06-2007 at 04:16 AM.