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Brad Roberts · 08-05-2014, 08:27 AM

The performance AOS *only* works on the Boxster 03 and up engines. It has to do with the oil return tube Porsche installs in the engine. The earlier 97-02 blocks? the AOS has a penis that goes into the block. 03 and up is completely different.

08-05-2014, 08:27 AM	#8
Brad Roberts Registered User Join Date: Aug 2004 Location: Alta Loma, CA Posts: 1,334	The performance AOS only works on the Boxster 03 and up engines. It has to do with the oil return tube Porsche installs in the engine. The earlier 97-02 blocks? the AOS has a penis that goes into the block. 03 and up is completely different. __________________ Engine Builds, Transmission Builds, Engine Conversions, Suspension Installs, Suspension Tuning, Driver Coaching, Data Acquisition, Video, SCCA/PCA/POC/NASA/GRAND AM/ALMS. We have worked with amateur and professional drivers for over 26 years. In house machinist, In house fabrication. Our cars, our parts, our engines, our transmission's run nationwide at events every weekend. We work side by side with industry names developing parts.