Quote:
Originally Posted by smygolf
I see,
So if i want the 4000 rpm function i have to go with Porsches original parts.
They got mail to but i suspect its gonna cost Alot!!
Thanks again Ian, much appreciated!!
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No, the OEM system shuts the bypass valves (via vacuum), and prevents them from opening, between speeds of 17 and 29 MPH to meet the Swiss legal sound standards................
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