Your right, i wonder why it hasnt been made for the boxster. Depending on the total weight savings, were looking atleast 7hp increase. My TwinTurbo Z got one of them and the incease was 13hp at the wheels, dyno tested.
Sounds like we need to start up a petition and send it to A.E.M. or some other well known maker of Underdrive Pulleys.
Just talked to them They are phasing our the Tru-Power pulleys due to demand issues, the tooling and machining of the aluminum was too costly for the demand. They are also phasing out shift knobs...
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