RS2 ?'s

Brett Dikeman brett at
Mon Dec 15 16:57:14 EST 2003

At 9:46 AM -0700 12/15/03, Brandon Rogers wrote:
>Hey guys-
>...just been thinking recently...and I'm sure this topic has been 
>discussed a few times..but I'm looking for performance comparisons 
>between a stock motor with K24, chipped ~"stage III" (~20 psi boost, 
>2.5 bar PT) and the same motor with RS2 EM, RS2 turbo, and 
>applicable software.  Where (rpm) does boost come in strong on the 
>RS2 set up, where does it fall off?  Is there more "punch" or is it 
>more linear?  I'm not looking to do a full-on RS2 package, i.e. MAF, 
>injectors etc etc, nor am I looking for comparisons from full blown 
>RS2 modded motors.  Just contemplating EM, turbo and software.

One of the chief complaints with the RS2 was "massive" turbo lag; the 
RS2 turbo is substantially larger.

You'll see a few HP from the RS2 manifold(emphasis on "a few"), and 
the RS2 turbo is more efficient at higher boost levels.  Even if 
boost levels didn't change, you'll get more power due to lower charge 
air temps.  With the RS2 turbo+manifold, I believe the restriction 
switches to fueling, mostly...

Corrections welcome...

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