[s-cars] Alternatives to RS2 Injectors - related Q

[Mark Strangways]

Yeah I didn't read ALL the e-mails prior to responding...
Shame on me :-)

Mark
----- Original Message ----- 
From: "Mihnea Cotet" <mik at info.fundp.ac.be>
To: "Mark Strangways" <strangconst at rogers.com>; "otw185" <otw185 at yahoo.com>;
<s-car-list at audifans.com>
Sent: Monday, February 23, 2004 5:10 PM
Subject: Re: [s-cars] Alternatives to RS2 Injectors - related Q


> Seems to me I had corrected the injector flow rating in the fuel/timing
> chip but I can't remember for sure actually....
>
> I'll check that again soon, but then, the best bet is to log how many
miles
> you do on a tank...
>
> HTH,
>
> Mihnea
>
> At 17:05 23/02/2004 -0500, Mark Strangways wrote:
> >You show better gas mileage because the ECU is using a shorter duty cycle
> >with the larger injectors.
> >Since you have not had your injector size value in the ecu changed
(Mihnea
> >enter here) your ecu is calculating the fuel economy based on what it
thinks
> >the injector size, and it's duty cycle. So it feels as if it is not
nearly
> >burning the same amount of fuel.
> >
> >What to do ?
> >a) Talk to Mihnea about setting your injector size into the software,
> >or
> >b) Enjoy the illusion that your getting really good fuel economy.
> >
> >Fill the tank, reset the tripometer, and log how many miles you get to
that
> >tank. Then calculate the real fuel economy
> >
> >Mark S
> >----- Original Message -----
> >From: "otw185" <otw185 at yahoo.com>
> >To: <s-car-list at audifans.com>
> >Sent: Monday, February 23, 2004 11:16 AM
> >Subject: [s-cars] Alternatives to RS2 Injectors - related Q
> >
> >
> > > I forgot to mention I did indeed change to new timing
> > > and boost chips created with this in mind when making
> > > the injectors/cam change as well.  Still surprise to
> > > see significant fuel economy improvement....
> > >
> > >
> > >
> > > Message: 9
> > > Date: Mon, 23 Feb 2004 06:47:49 -0800 (PST)
> > > From: otw185 <otw185 at yahoo.com>
> > > Subject: [s-cars] Alternatives to RS2 Injectors -
> > > related Q
> > > To: s-car-list at audifans.com
> > > Message-ID:
> > > <20040223144749.74921.qmail at web41211.mail.yahoo.com>
> > > Content-Type: text/plain; charset=us-ascii
> > >
> > > The talk of injectors has reminded me about an
> > > observation of mine.
> > >
> > > About a month ago I switched to 37#/hr. injectors and
> > > somehow my (92's) computer is telling me I'm now
> > > getting avg. MPG of about 21.5.  In the past with
> > > stock injectors and RS2 turbo, I was seeing more like
> > > about 17 all-around MPG.  All other factors are more
> > > or less constant except I also switched out the
> > > exhaust cam to a 7A type at the same time.
> > >
> > > Any explanation for why I'm showing better fuel
> > > economy given I should be burning more fuel with the
> > > larger injectors -- or is it a calibration issue with
> > > the Motronic ?  I haven't yet just calculated my
> > > mileage by actual fuel volume used vs. miles which I
> > > keep forgetting to do.
> > >
> > > Scott S.
> > > Columbus, O
> > >
> > >
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