I have a almost stock s4 n/a FC with <10k on a rebuilt engine, and a relatively low-milage transmission. Only mods are removed emissions and a Borla catback exhaust. I'm looking for a cold air intake, but having trouble with that. Problem is simple: I want more power, but still want it to be streetable.

What relatively inexpensive forced-induction setup would you reccomend for an n/a s4 FC? Supercharge it? find some sort of aftermarket turbo setup? or am I better having my engine streetported?

 

There is no relatively inexpensive system available. You will have to fab it yourself.

It seems crazy to disassemble an engine with less then 10K on it and port it.

 

what he said!

 

Buy a good used Turbo II and sell your current car. This will save about $2,000-3,000 vs. trying to modify your car from its existing form.