[s-cars] RS2 Injectors

[serge]

Mark, I have recently gone the RS2 route, and I can tell you there is a
great deal of difference between simply "keeping" all the parameters within
limit vs. "optimizing" your software to work w/ your specific hardware
combo.

I drove my S6 Avant w/ full RS2 +Stromung for the first time while running
MTM Stage 1+. Car felt good above 4000, but very flat below that. I switched
to boost and timing chips that were specifically designed for the new
hardware, and whoooaaaa mama, different car. Waaaaay more torque down low,
boost comes on at 3500 instead of 4000. Just as you say, the ECU was talking
to the O2 sensor, the MAF, the injectors, making compensations in both
setups. But the difference between them was profound. YMMV.


Serge Filanovsky

95 S6 Avant



Mark Strangways wondered:

> This brings me to another question then.
> Do our ecu's not adjust the duty cycle of the injectors based on a closed
> loop feedback from the O2 sensor ?
> Should then the ecu not be able to compensate for the different CC's of the
> injectors ? Provided of course that it doesn't force the duty cycle outta
> range and throw errors.
> The whole concept of a computer control and all these sensor is to give the
> engine some intelligence, or does it just follow lookup maps ?
>
> Mark S
> ----- Original Message -----
> From: "Mihnea Cotet" <mik at info.fundp.ac.be>
> To: "Christopher Gharibo" <cgharibo at usa.net>; "* S List"
> <s-car-list at audifans.com>
> Sent: Friday, June 27, 2003 7:04 AM
> Subject: Re: [s-cars] RS2 Injectors
>
>
>> Chris,
>>
>> The RS2 injectors don't have any disadvantages other than the fact that
>> you'll need to have your ECU rechipped in order to take advantage of them
>> and of the RS2 turbo. They are a direct replacement. Depending on what
> else
>> you install in your car along with your RS2 turbo, you can have up to 380
>> HP, but the RS2 injectors aren't really necessary before 350...
>>
>>
>> HTH,
>>
>> Mihnea
>>
>> At 06:52 27/06/2003 -0400, Christopher Gharibo wrote:
>>> I have Stage I upgrade on my S6 and may go for RS2 turbo in the future.
>>>
>>> What are the performance improvements and disadvantages of RS2 injectors?
> Are
>>> these injectors a direct replacement?
>>>
>>> Thanks,
>>> Chris
>>>
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