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Old 10-14-2004, 01:45 PM   #8
Scooby Guru
Member#: 32636
Join Date: Feb 2003
Chapter/Region: MWSOC
Location: Dayton, OH
2004 Impreza STi


How much of a difference do you feel the Gruppe-S header (w/ jet hot) did for you? I ordered the Helix DP with cat for my STi and plan on getting the Hydra and would like to have a good comparison to someone with an AccessPort to see what kind of HP difference might exist between them.

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