You definitely can, but I had an FBO E85 Golf R before my M3P that was a 11.1s car and I was always worried about it blowing up. I actually had my rear Haldex fail and luckily my local dealer looked the other way on some of the mods and I was able to get it warrantied although it nearly ended up costing me $8K. Before that I had a Subaru STi that I actually blew up and ended up rebuilding the motor with forged internals, making 500whp and being a 10 second car (on the rare occasions that it didn't have some other issue since it was super finicky).Yeah, like I said...same range. They are both 11 second cars. A simple flash tune on the Audi and you're mid-to-low 11s all day long. And you can go much faster from there if you want, unlike the M3P.
My goal with my M3P was to just get a car that was fast enough with a fully intact warranty, I'm done sinking gobs of money into mods. The RS3 meets that criteria in stock form as well.