Woo-Hoo thanks all, this mod works great!! It took me about 15 minutes to drive to the hardware store and about 2 minutes to drill the holes. My Boxster has a much deeper sound at idle and up to about 3000 rpm. I have a 1999 Boxster with the single outlet all I did is drill slowly and hold the bit so it was firm up against the outlet. Drilled one 1/2 inch hole in each pipe and with the angle I suppose I ended up with a 3/4 inch hole in each. Thanks for saving me the $350.00 I was going to buy a %is&#& after market bypass this does the same thing.
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