wrote:
> On Oct 17, 9:46 pm, Scott in SoCal > wrote:
>> " > said in rec.autos.driving:
>>
>>
>>
>>
>>
>>> On Oct 17, 4:15 pm, (Timothy J. Lee) wrote:
>>>> In article . com>,
>>>> > wrote:
>>>>> What's a reasonable way to determine at what RPM your vehicle gets the
>>>>> most mileage per gallon of gas?
>>>> If you have an OBD-II car, plug in an OBD-II scanner that can read out
>>>> instantaneous fuel consumption and use it to determine what the fuel
>>>> consumption is at various RPMs and speeds. However, you'll need a flat
>>>> road with little traffic to conduct your experiment safely. Perhaps
>>>> also a passenger reading the scanner and recording RPMs, speeds, and fuel
>>>> consumption while the driver tries different RPMs and speeds.
>>> Good call. It's a 98, so it should be compliant. Of course, I'd need
>>> a scanner that will give me the instantaneous fuel consumption. That
>>> may cost more than I could ever hope to save in fuel.
>> A code scanner will always be useful, so you can't really look at it
>> like that.
>> --
>> MFFYCam Videos Galohttp://www.geocities.com/mffycam/htt...ills.blip.tv/- Hide quoted text -
>>
>> - Show quoted text -
>
> Maybe, but it looks like I'd be a few hundred into it to get one that
> will give me fuel consumption and such. So far, every time I've
> needed a code scanner, I've got to Advanced Auto Parts and borrowed
> theirs for free. So basically I'd be spending hundreds for this
> experiment, and the convience of having my own scanner instead of
> driving up the street to Advanced. It's a tough sell.
>
Why not do it the quick and dirty way and look at the torque and
horsepower curves for your vehicle. Where the two cross should be pretty
close.

Wont be a best fit for some vehicles but should do most