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Thread: Mazdaspeed OEM Wastegate actuator = $$$$$$$$

  1. #76
    Registered Member bwlknsn91's Avatar

    2003 MSP Black Mica #117

    Join Date
    Apr 2012
    Location
    St. Louis, MO
    Posts
    368
    Thanks a ton guys! I'm just looking for the easiest/least complicated way of replacing it! Haha
    MODS:
    Injen Cold Air Intake, CorkSport PowerSeries 80mm Exhaust, ATP Wastegate, CorkSport MotorMounts, AXR Bracket, Greddy Full-Auto TurboTimer

  2. #77
    Registered Member

    2003 MSP

    Join Date
    Jul 2016
    Location
    Oakland CA
    Posts
    20
    Holy dead thread, Batman! Anyone still out there? All stock..I replaced my actuator. I had to extend the rod at least 3/4" inch to reach the gates arm. Feels like I'm still getting fuel cut as before but now I can ease into High RPMs. Is my gate not opening fully? I need a boost gauge too...

  3. #78
    Certified Mazda Tech hornsfan10609's Avatar

    2003.5 Mazdaspeed Protege x2

    Join Date
    Jun 2009
    Location
    Austin, Tx
    Posts
    8,123
    Which WGA did you buy? It may have a stiffer spring that is raising the boost. The wastegate won't open until the car hits enough boost to push the spring and open the flap.
    Mod List. "Jinba Ittai"

    2003.5 Titanium Mazdaspeed Protege #1345 Purchased 7/20/10
    2003.5 Titanium Mazdaspeed Protege #1574 Purchased 10/25/14

    2009 Highland Green Mustang Bullitt #5998 12.9@110
    2002 Red Protege5 RIP:4/25/10

  4. #79
    Registered Member

    2003 MSP

    Join Date
    Jul 2016
    Location
    Oakland CA
    Posts
    20
    It's the adjustable ATP unit.
    Is fuel cut an on/off thing or is is in gradations?
    I can floor it in 5th at 4000 and it does a softer version of that bucking l

  5. #80
    Registered Member

    2003 MSP

    Join Date
    Jul 2016
    Location
    Oakland CA
    Posts
    20
    We're talking heavy duty- didn't make it thru the yellow light dying effect here, just so you know.

  6. #81
    Certified Mazda Tech hornsfan10609's Avatar

    2003.5 Mazdaspeed Protege x2

    Join Date
    Jun 2009
    Location
    Austin, Tx
    Posts
    8,123
    Fuel cut is only at full throttle and the car will cut out a second. It's abrupt like slamming on the brakes but just for a second. The car won't die it will keep running and the boost will drop off. Check that your battery terminals are tight and clean and the main fuse in the underhood fuse box is secure.
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  7. #82
    Registered Member

    2003 MSP

    Join Date
    Jul 2016
    Location
    Oakland CA
    Posts
    20
    Its not stalling. just a violent burst like you describe. It will happen at 3/4 throttle too and before I replaced the actuator, I couldn't rev it past 4,500 at all without getting it. I'm not sure now if its fuel cut. My boost gauge should arrive tomorrow, so that will help diagnose it.

  8. #83
    Registered Member

    2003 Mazdaspeed protege

    Join Date
    Nov 2018
    Location
    Round rock Tx
    Posts
    2
    Iím about to buy the ATP wastegate anyone close to Austin to help me install lol

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