Too bad this hasn't happened yet
 

, APR plans on producing two
kits for the S4, one with 450 bhp and
another with a whopping 550 bhp!
Both will offer Garret turbo
upgrades, the big-bore king hellkiller
kit will include a redesigned
exhaust manifold, incorporating
ideas developed in the A4 program.

-quote from european car back in 2000....6 years and counting

Well, ASP is almost done.
 

<ul><li><a href="http://www.autospeedperformance.com">ASP</a></li></ul>

The 450 one just finished lol(current v2.0 Stg3). Anyones guess if the other will ever see daylight.

If I had a twin garrrett setup I would hope it would make more then 550 horse.

Wheel or crank? =)

I would be psyched beyond belief to have 425whp on pump and 500whp on race...RELIABLE

You would also hope it would not blow up

&lt;cough&gt; Sounds like it might be there already &lt;/cough&gt;

Hey Pedro, well prepare to be XTRA psyched. =)

Muy Bueno, senhor Marcos!!!!! I guess I should consider selling some organs soon.. ;-)