[BiturboS4] chip upgrade

[Michael Kuriger]

thanks again for all the helpful input.  I decided to get a giac chip,
giac tip chip, duel exhaust setup, and cat "test pipes" for the S4.  it
should be a spunkier car after that.  has anyone upgraded their turbos
yet?  I'm not talking about replacing them, but like machining them and
having larger wheels put in or a larger compressor housing?  I've dont
that on my impulse RS and it is a nice upgrade on the isuzu to put on a
t3 compressor housing to the stock exhaust housing and use a t4 wheel.

thanks!
Mike Kuriger
01 s4 avant