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  1. WTB:05'-07' Intake Tumble/butterfly Flaps HELP!

    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. Tumble flap delete IMRC

    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...