what is the max boost a stock 2000 A4 turbo can handle

 

your stock turbo is a KO3, it can handle more than 25psi, but it becomes impotent when boosting any higher...most people are spiking around 25 and holding at 20 with a chip/dv/n75...

as far as how much your stock turbo can handle, I remember reading somewhere that someone ran the stock turbo at 40psi for kicks...(i may be wrong)

hope that helps

 

Most i have seen is almost 30psi and your not making anymore power past 22psi.