[s-cars] RS2 MAF meter

[Charlie Smith]

Earlier, Robert Pastore wrote:
>
> O2 sensor only comes into play closed loop.    WOT ( when all the fun SHOULD
> start) is open loop, no help from the 02 sensor.  WOT is also when you build
> boost -- do you really want to risk a mixture that is less than ideal with
> 20+ lbs of boost?

Most of your "steady state" running (that I was talking about), is at cruise
not WOT.  At least I can't run WOT here in Ohihohaha Land very often or for
very long.  And, I can build close to 20 lbs boost at less than WOT.  Of
course, I can't cruise there for long in Ohihohaha Land.

    - Charlie


  Charlie Smith   charlie at elektro.cmhnet.org  614-471-1418
  http://www.elektro.com/~audi     photos & technical info





> Bob
>
> -----Original Message-----
> From: Charlie Smith [mailto:charlie at elektro.cmhnet.org]
> Sent: Thursday, April 17, 2003 4:30 PM
> To: mlped at qwest.net
> Cc: s-car-list at audifans.com; charlie at elektro.cmhnet.org
> Subject: Re: [s-cars] RS2 MAF meter
>
>
> Earlier, mlp qwest wrote:
> >
> > No.  You can swap parts, but they don't always run well together.
> > Ditto the screen / no screens issue.  I believe opinions on the
> > list have varied as to whether the those trying the mod have noticed
> > an improvement, or not.
>
> You guys have to remember that the O2 sensor system is in action here.
> Even if your MAF is off calibration for the values in your ECU, you
> will sort of limp along.  Because when you get to a steady state with
> the go-fast pedal, the O2 system will put the mixture where it want's
> it to be.
>
> You may have stumbles or flat spots getting to steady state, because
> the basic mixture is being set wrong by the ECU because it is getting
> invalid signals from the MAF.  Same is true with different injectors
> or when you've been fiddling with the fuel pressure.
>
>     - Charlie
>
>
>   Charlie Smith   charlie at elektro.cmhnet.org  614-471-1418
>   http://www.elektro.com/~charlie      Columbus Ohio   USA
>   http://www.elektro.com/~audi     photos & technical info
>
>   95 S6 Quattro  -  24 PSI, RS2 6 speed, and other features
>   97 Dodge Ram   -  35 PSI, 4x4 w/Cummins turbo diesel
>

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