I just got an A6 2.7 and i was wondering if i can get an upgrded turbo and/or a blow off valve and where do i go or what websitedoi go to,to get it.

 

Look into diverter valves or recirculating blow off valves rather than just venting the air or your car won't run right. Do some researching on what power you want to make with your car, and that will help you to decided what size turbos to look at.