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[QUOTE=RL18;26946533]Rawtek has a cat just after the downpipe in there kit. I helped a friend delete his x5d using that kits and we just used a nice heat wrap tape to make sure it heated up enough to work, especially being in Maine and it being so damn cold. As far as I know though the cat works great even being further down stream.[/QUOTE]
To be most effective the DOC must be the closest it can to the turbo. I'm been happy with buzzken's downpipe with DOC. Helps to keep the smell down and tones down the turbo whistle
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