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Thread: 2012 f150 ecoboost throttle closing boost surge

  1. #1
    Potential Tuner
    Join Date
    Oct 2021
    Posts
    2

    2012 f150 ecoboost throttle closing boost surge

    Im having issues and my tunner wont get back to me anyone out there that can help me. first let me start with my mod list. . SO LIST OF MODS ARE. CATLESS DOWNPIPES, EXHAUST, AFE STAGE 2 INTAKE, SNOW PERFORMANCE STAGE 2.5 WATER METH INJECTION KIT STARTS AT 7PSI OF BOOST AND FULL SPRAY AT 19PSI WITH 4GPH NOZZLE, MISHIMOTO INTERCOOLER, MISHIMOTO CATCH CANS, TURBO SMART BLOWOFF VALVES. AND 160 THERMOSTAT.

    list of new parts. THROTTLE BODY, BOTH MAP SENSORS ONE ON MANIFOLD AND ONE ON PRESSURE SIDE OF CAC, NEW TURBOS, NEW WASTEGATE SOLENOID, NEW BOV VALVE SOLENOIDS, NEW PLUGS GAPPED AT.28.

    The issue im having is that im getting loss of boost/ surging. its erratic under WOT and light throttle its surging bad. you can actually see the throttle backing off on TPS. any advise or could point me to a tuner that could remote road tune my truck.

    Im at the point where i cant keep throwing parts and im not sure if theres a problem with the tune or with my truck.

    DATA LOG FREEWAY PULL AND LIGHT THROTTLE 10-11-21.hpl
    Last edited by Remington11577; 1 Week Ago at 08:32 PM.

  2. #2
    You are missing a lot of needed parameters in your log. Try this channel list.
    2017 3.5 Ecoboost.Channels.xml

    Don't know if I can help you with your issue, but whoever does will need more info in the log.

  3. #3
    Potential Tuner
    Join Date
    Oct 2021
    Posts
    2

    Question

    ok i added the parameters thanks JR2185. I changed my sparks plugs and did some more pulls same result noticed that the knock retard hit 6 which im assuming is closing my throttle trying to save my motor and back of the boost. ive done some research and ive been reading about some limiters. LSPI Reduction under torque management. torque management. speed limits, fmem limits, outlet psi limits, exhaust temp. im not sure of these limiters have any thing to do with it either, Anybody have any suggestions?pulls after spark plug change. 10-12-21 530pm.hpl

  4. #4
    Quote Originally Posted by Remington11577 View Post
    ok i added the parameters thanks JR2185. I changed my sparks plugs and did some more pulls same result noticed that the knock retard hit 6 which im assuming is closing my throttle trying to save my motor and back of the boost. ive done some research and ive been reading about some limiters. LSPI Reduction under torque management. torque management. speed limits, fmem limits, outlet psi limits, exhaust temp. im not sure of these limiters have any thing to do with it either, Anybody have any suggestions?pulls after spark plug change. 10-12-21 530pm.hpl
    Yeah idk. I think you need to investigate your VCT settings. On every spike VCT Schedule Mode switches between "Fuel Economy Drive" and "Disabled". I also realized I don't have cam position in this list.