what do you guys recommend on ecu flashes APR VS REVO VS GIAC?

APR and REVO do not offer an ECU flash for B7 S4.

http://www.giacusa.com/programs.php?mpid=177

GIAC without a doubt. Trust me on this. I've had experience with all 3 compaines and GIAC is definately the best software out there. Just ask all the Porsche guys what most of them run

GIAC for Porsche but for audi i have to go with APR.. had is on my old A4 2.0T, pretty cool you can turn it off

lock access using the cruise control lever..no need for he giac plug.

Also since it's an N/A engine, go with the cheaper one, APR then spend the rest on exhaust and intake..jmho

APR Does have software for the B7 S4, just not the 2005.5 S4. From what I have heard, none are going to give you any power, but will increase throttle response. Also, APR will raise your Redline by 250 RPM's which is better.

Maybe I'm missing something, but I did not see a B7 S4 ECU flash on the APR site...

B5...

http://www.goapr.com/Audi/vehicles/s4.html

B6...

http://www.goapr.com/Audi/vehicles/b6s4.html

B7...?

No problem, here you go.

http://www.goapr.com/Audi/products/e...rade_b7s4.html

Aha, thanks for the heads up! That link does not show up on the drop down "Select Products for Audi Vehicles" menu, but just as you said, it is here...

http://www.goapr.com/Audi/products/index.html

My mistake!

What other mods are planning on doing?