[s-cars] To RS2 or Not? (longish)
rpastore at animalfeeds.com
Tue Mar 26 07:52:01 EST 2002
A k24 with stage 1+ is a nice setup. I ran this for a few years, and
delayed going to the RS2 setup because of the exact same apprehensions you
Having been through it, I can tell you that going to RS2 is an upgrade you
will never regret. My brother now has stage 1+ in his s4, so I have the
opportunity to drive both back-to-back.
1) You are correct, but the butt dyno tells me the crossover is a few
hundred RPMs lower, maybe 3200-3300 instead of 3,500.
2) You are probably correct about spending a majority of your time below
3,200 RPM. 95%, I don't know. But the reason you post to these lists and
are considering the upgrade is that you get a real buzz out the other 5%.
With the RS2, the 5% will be A LOT more fun.
3) Driving the RS2 on a daily basis, you reach a point where you are
convinced you have lost nothing in terms of low end, and have gained a ton
in the upper RPM range. It is only when you drive the cars back-to-back do
you realize that you have given up low end. What happens is that over the
course of a few days or weeks, you unconsciously adjust your driving style
to compensate for the missing torque.
4) The RS2 is still a comparitively small turbo. Put it next to a T4 or a
T3/T4 hybrid and you'll physically see how small it still is.
My brother and I recently switched cars for a week. On Day 1 I was impressed
by the low end torque of the k24. It was a nice drive. By the end of the
week, I badly missed the upper rpm pull of the rs2 and could not wait to get
my car back.
From: Greg Johnson [mailto:gregsj2 at attbi.com]
Sent: Tuesday, March 26, 2002 12:06 AM
To: 200 List; S Cars
Subject: [s-cars] To RS2 or Not? (longish)
To RS2 or not to RS2, that is the question. . . .
Over the course of the past few years I've been carefully upgrading my
'91 200 20v tqa so it would be ready for an RS2 conversion. Among other
things, I did the suspension; the brakes, added a custom mandrel bent
exhaust, and the IA Stage III+ ECU. I've also contacted a good friend
in the fatherland and have obtained fantastic RS2 pricing. Now that
order day is upon me, I'm having second thoughts. Why? 95% of the time
I live between 2200 and 3200 rpm. I did a bit of charting this weekend
using Jeremy Williams IA Chipped '91 200 TQ Dynograph that's posted on
the S-Car list Yahoo site (files/jeremy_audi.jpg) and RS2 Dynograph
that's also on the S-Car list Yahoo site ( Photos/RS2-UrS4 DynaPack)
From these two graphs, here's what I've *estimated*
Torque conclusion: the K24 hammers the RS2 until about 3500, then the
contest is over.
HP conclusion: the K24 hammers the RS2 until about 3500, then the
contest is over.
Query: Is it fair to say that the K24 outperforms the RS2 until
3500rpm? If so, I'm not sure I want to RS2. Number don't always tell
the whole story, so I'm looking for lots of input from you RS2 guys.
TIA for your help and collective wisdom,
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