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  1. N/A Tuning
    Hi, I have a 2004 Subaru Impreza which is in need of a head gasket replacement so figured it would be a good time for some upgrades. My plan so far is upgrading to delta 2000 cams, obx headers, a custom intake and engine management to allow me to tune the car. I'm aiming to try to achieve around...
  2. N/A Tuning
    Hey, I have a 2004 Subaru Impreza RS and am looking into getting equal length headers. I've been researching and seen the power and torque gains from the OBX and MRT headers but haven't been able to find anything on the X-force 4-2-1 headers. Has anyone run these headers? How would they compare...
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