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tumble

  1. Want To Buy
    I'm looking for the Intake Manifold Tumble/Butterfly Flaps. I'm in Oregon and DEQ is next month; I won't pass it. If anyone has any spare that they can ship to me. You'd be my new best friend. Please let me know A.S.A.P. Thanx.
  2. DURATEC Performance (2003-2007)
    I have a spare intake manifold now for my D20 and am considering removing the IMRC valves and want to hear from those who have done it and if it's worth it. I figure it's something cheap/free and I have the SCT PRP so I can tune to adjust for it. However, if it does help with performance I'll...
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