1990 V8 Quattro Nitrous setup
 

I have a 1990 V8 Quattro that runs great.

Attachment 32310

I have been forced to sell my 1988 Turbo Tbird that I normally race at the strip.

Attachment 32311

So I plan on racing my Audi in the street class.

Here is my main question: If I spray lets say 150whp wet shot, what will break first? The engine or something in the drivetrain.

I guess what im asking is what is the weak point on these cars?