Quote:
Originally Posted by Steve2.5i
Obx, cnt, TWE [requires o2 extension ](equal length) , borla reps with fabrication (uel) do not recommend over rallisport. Not worth the headache. Surf the forums for details or maybe someone here can chime in.
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Custom modified WRX headers/cat-pipe/o2 extension/possibly CEL or Rallisport period.