[s-cars] Impact of RS2 Upgrade

[Mihnea Cotet]

Chris,


Here's a dyno graph of a friend's UrS4 running:

RS2 turbo
RS2 EM
RS2 injectors
7A exhaust cam
free-flowing exhaust with no cats

http://www.info.fundp.ac.be/~mik/dyno-graphs/Dan-dyno-S4-RS2.bmp

wheel HP is just a bit under 300, 299.5 or so (220kW)

And here's a friend's RS2 running just a good exhaust system with 
emptied-out cats:

http://www.info.fundp.ac.be/~mik/dyno-graphs/Graph_mihnea.jpg


Both cars were tuned in real-time, though the S4 was done about 8 months 
ago and now I seriously think if I could do it over (and I'll do it over in 
a few weeks) this could go as high as 370-380 HP, though the stock S4 
intercooler really becomes the HP trap at those HP levels.

Driveability is very good according to both owners (these are the 2 only 
RS2 spec cars that I've tuned and that have been dynoed so far), much 
better than a stock RS2 for instance, especially because the stock RS2 is 
laggy and doesn't have as much torque as both these cars (420lb/ft at the 
crank for the S4 and 440lb/ft at the crank for the RS2)....

Hope this helps,

Mihnea



At 17:25 28/01/2004 -0500, Christopher Gharibo wrote:
>Now that there is a group purchase in place, I have some questions about the
>RS2 upgrade:
>
>How much hp/torque do I gain if I upgrade to RS2 turbo, manifold, injectors
>and chip?
>
>And, how does the drivability, lag and torque curve of the car change?
>
>Thanks in advance.
>Chris
>
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