I found mine thru Woody. Happy with it.
Just my opinion - the UDP doesn't give the engine any more power but it creates less parasitic drag from the accessories and that frees up a handful of HP for the engine to use in turning the wheels.
Two items I've noted - my engine runs a tiny bit rougher at idle with the UDP and I wouldn't use the UDP to time the engine - keep the original handy for that task.
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2003 S, 6 Speed, PCM, PSM, Bose, Litronics with washers, on its' second LN IMSB, comfort top, UDP, 987 engine mount, 997 RMS, Koni Sport Shocks, H&R springs, Techno brace, comfort blinkers, nin8six windscreen, particlewave light up cubby
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