I picked up a used Hahn Racecraft lower intercooler pipe off of DSMtrader, and after a little elbow grease to clean up a little surface rust, and some paint, it's now on the car. I was expecting little or no difference in performance, and it met my expectations, with one exception: I seem to have a little less boost spike than I had before intallation (previously, I would usually spike anywhere from 18-20 psi, and then drop and hold at 17 psi). For the record, the pipe has an inside diameter of 2", and mates up to the T-25 and the stock intercooler perfectly.