[s-cars] RS2 MAF deliberations

[Bruce Mendel]

Mihnea,

Nice to see you here.....a lot of great thoughts!
----- Original Message -----
From: "Mihnea Cotet" <mik at info.fundp.ac.be>
To: <QSHIPQ at aol.com>; <rpastore at animalfeeds.com>; <toddekramer at msn.com>;
<s-car-list at audifans.com>
Sent: Friday, April 18, 2003 3:29 PM
Subject: Re: [s-cars] RS2 MAF deliberations


> Scott,
>
> IMHO, if you had just spent a few couple hundreds of dollars on having
your
> car tuned right on a dyno by someone who can tune it real-time, then I
> think you won't post such conclusions. I know of no one among the "real"
> tuners (I mean not the vendors that are in the US and I really mean
> **vendors**), especially in Germany who'd recommend to install the RS2 MAF
> in order to have "proper" HP and operation. RS2 injectors don't require
RS2
> MAF, period. But they do instead require proper tuning. The "max flow"
> signal doesn't have anything to do with injector size nor does the MAF
have
> anything to do with open/closed loop **** when the programming is done
> correctly and accordingly****. I've very recently tuned an AAN Motor to
380
> HP and I can assure you it ran perfectly under either open/closed loop if
> those words do mean something however. Just as a FWIW, the ECU keeps on
> monitoring the mixture at WOT and still uses the O2 output, BUT with a
> different scaling that can be reprogrammed.
>
> This is just my 0.02 Euro from my "tuner" point of view, but I'm open to
> discussions and different opinions anyway,
>
> HTH,
>
> Mihnea
>
> At 07:13 18/04/2003 -0400, QSHIPQ at aol.com wrote:
> >--
> >[ Picked text/plain from multipart/alternative ]
> >I played with all these toys extensively, and also determined that
regardless
> >of "chips", the "RS2 pkg" should be done in concerto.  One can skip the
RS2
> >exhaust cam and get the car running right, skip the RS2 FPR with RS2
> >everything else (turbo, manifold, FI, cam/no cam, MAF) , a 400hp S car
will
> >drip HC from the exhaust, btdt. My experience too, is that the urs MAF
will
> >run lean closed loop, but rich sooner (before open loop).  I concluded
that
> >this was due to the "max flow" = max DC signal from the MAF to bigger
> >injectors.
> >
> >A couple hundred hours into the why's and what's and dyno charges (a
fraction
> >of it billable hours), I come to the same conclusion as Rob, RS2 package
=
> >RS2 package (+/- cam).  Short any of it, costs more money to get right
than
> >what you skipped in the package.
> >
> >HTH and my .02 arbitraged thru the peso
> >
> >Scott Justusson
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>
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