I used to have one. It requires a Turbonetics Deltagate. It's a nice unit, but has some drawbacks. First, I wouldn't recommend it on anything larger than a TE-44 or TA-49 because of the limitations of the wastegate. You'll get boost creep in the 18+ psi range unless you enlarge the wastegate hole if you're using anything other than a stock turbo. The downpipe is also longer than a conventional DP. I never found a cat that would fit, so I had to put on the stock DP and elbow when I needed to go to emissions. This doesn't exactly work well with the wastegate hole being enlarged. Hope this helps.