[s-cars] RS2 MAF deliberations

[Mihnea Cotet]

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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