S4 turbos aren't direct replacements, even though they're K03's, because of the shape of the compressor outlets.


vs.

 

Yes. No. Secondary air pump.

 

This reminds me of my dsm days. Anyone on the forums selling a used ko3? And how much is it usually for a ko3 and the secondary air pump

 

A new turbo is a ton of money. A new SAP is around $300. A part-out car will supply both for far less.

 

Posted an ade wit wat im looking for. Also do u have any idea y the light wit and aarow and such comes on with my abs light? I looked in the book its the electronic stability thing. No idea y its up and comes on wit my abs light every now and then turn the car off and its gone then comes back later

 

Probably a bad abs sensor. After seeing enough posts on here about it, they tend to get worn out on higher mileage audi's. I'm not sure how much the sensors costs, but you can do some research on here using the search function and probably find out