Close

Results 1 to 2 of 2
  1. #1
    Join Date
    Apr 2015
    Posts
    47
    Rep Points
    38.5
    Mentioned
    0 Post(s)
    Rep Power
    0


    Yes Reputation No

    Comparing My local ECU tune With the STAGE II MHD Flasher OTS file + thoughts PLZ ?

    I have been driving around with My stage II tuned N54 for over a year , It was a Tune from a local tuner with Dyno.
    Somewhere this month i am going to recieve some new turbo units, so i thought it was a good time to check out different tuning options.

    My car has a Forge intercooler, Active Autowerk ********* and a ER chargepipe with Tial BOV.
    Also the car Still has BMW Waste gate rattle fix, gving some "lag" because it keeps the waste gates open at idle.

    I first Logged some 3 WOT pulls with MHD flasher monitor module from the local tuner file.

    http://datazap.me/u/odanbe/odanbe-3t...og=0&data=4-20

    then I flashed the car back to Stock , with the file provided by MHD Flasher

    http://datazap.me/u/odanbe/335imhdoe...og=0&data=4-22

    And then I flashed the stage II map (wedge?) i bought from MHD flasher

    http://datazap.me/u/odanbe/mhd-flash...og=0&data=4-22

    I few things i noticed right on :
    The stage II MHD map makes more power. Because of the higher boost
    BUT
    The Local Ecu tuner file is/was much more responsive. Also the local ECU tuner file boost quicker. And post shift with the MHD map you really have to keep it above 4000 rpm post shift, or it falls a bit deat losing boost...

    How does this come ? I want to understand.
    It can't be the hardware because all was done within a timeframe of maybe 2 hours.
    I like my local tuner file more because it is more responsive. I would love the Power gain from the MHD stage II map ( 17 psi) with the responsiveness of my Local ECU tune file ...
    why is the MHD stage II file building boost slower with the same hardware.
    With my old Ecu tuner file @3000 rpm it makes already 10 PSI. With MHD @3000 rpm it only makes 5.9 - 6 psi Boost. this is a noticable difference in Power delivery.
    The car just feels slow and sluggisch below 4000 rpm.
    It is like having a big single... without the big single Click here to enlarge

    Anyone any thoughts on this ?

  2. #2
    Join Date
    Jan 2010
    Location
    SoCal
    Posts
    148,075
    Rep Points
    47,180.7
    Mentioned
    2523 Post(s)
    Rep Power
    472


    Yes Reputation No
    I see you copy pasted but that's fine.

    I don't know why the MHD file is building boost slower and I can't speak as to why that is happening.

    I'd say get yourself a quality custom tune. That would be my advice.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •