Have you had a look at a Apexi S-AFC Select? It's a cheapish voltage/amplitude/frequency/whatever modifier, I suppose. It has a wiring diagram for the Boxster in it.
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--1989 Mazda MX6 GT
--1997 Porsche Boxster
--2005 Lexus RX330
--2007 Maserati Quattroporte Sport GT
Last edited by Jinster; 09-26-2013 at 08:21 AM.
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