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The Boxster did not see vario cam + till 2007.
The changes are mostly cylinder head, intake and ECU changes in the 05 engines.
Port flow changed and the port margins intake/ exhaust are altered with the M97 cylinder head profiles.
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Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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