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Old 06-05-2014, 03:42 PM   #7
The Radium King
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Join Date: Apr 2010
Location: Canada
Posts: 3,121
300 hp is only possible with forced induction, displacement increase, or engine swap; $15k, $15k, or $15k. otherwise, do exhaust (doesn't need engine out) intake (987 airbox is easier with engine out) underdrive pulley (doesn't need engine out) and perhaps ecu flash. note that mods that increase hp through increased airflow (intake, exhaust) can affect torque at lower rpms.
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