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Shadrach, I wanted to be able to undo the mod if needed. I built two plugs out of copper pipe and caps. Spun them down on the lathe to fit the holes and then used pop rivets to hold them in place (although they did fit pretty tight). I haven't as yet but will shoot them with a little black header paint and they won't been seen. Pic attached isn't great but shows the caps.
Homeboy, I'm running stock exhaust manifold. Headers may come later. I have a 2000 so the post cats do not have O2 bungs. With the TS pipes added the car does breathe much better. Throttle response is really nice. So far there have been no codes.
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Boxster
Threaded Mode
