Hey everyone I just got an account on here and this is my first post. I have a burning question that I want to know and I hope you can help. I don't know if it has been talked about before or not but is there any way to put a turbo from a 1.8l Audi A4 onto my 1998 2.8l Audi A4? I have read a lot and people say that you should just put a supercharger on it. Maybe that's easier? I love my A4 and its got enough ***** for me to be happy but I was hopping I could get a little more out of it. 
3rd Gear
Supercharging is the most "standard" way to get more power out of your engine. Search for a kit called "PES G2". They tend to go for about $3,000 used.
Turbocharging your engine would be no small feat. You would need everything from a way to route exhaust piping to/from the turbo(s) and exhaust manifolds and car's exhaust, tuning, intercooler/charged air piping, oil/coolant feed/drain lines, etc.
Many would suggest buying a S4 or finding a donor S4 over turbocharging your 2.8.
Most with the 2.8 just settle for the performance they already have. There's really no cost effective measures to achieve more than maybe 10hp over stock.
Turbocharging your engine would be no small feat. You would need everything from a way to route exhaust piping to/from the turbo(s) and exhaust manifolds and car's exhaust, tuning, intercooler/charged air piping, oil/coolant feed/drain lines, etc.
Many would suggest buying a S4 or finding a donor S4 over turbocharging your 2.8.
Most with the 2.8 just settle for the performance they already have. There's really no cost effective measures to achieve more than maybe 10hp over stock.