Hey guys,

Just wondering who makes the best ECU upgrade for the 2000 a6 4.2? I heard of a couple of different companies like GIAC, ADR, etc.. I was wondering which one will give me the most hp ( at stage 1 or 2 ) and how much they are selling their chip for.

Any help would be awesome.

thanks.

 

Unitronic is best by far in horsepower and price. http://www.034motorsport.com/product...ducts_id=17580