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Thread: E46 M52TUB28 + HX35 - Engine management (MS42 + ECUmaster DET3) MAP sensor?

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    Question E46 M52TUB28 + HX35 - Engine management (MS42 + ECUmaster DET3) MAP sensor?

    Hello there,
    Iīve been building 3 new cars for our squad for drifting - E46 328ci with holset HX35 turbo. My previous setup I was running M50B28 stroker with turbo on megasquirt 2. I personaly loved user interface in the tuner studio. Now I would like to control both exhaust and intake vanos on the M52TUB28 engine, but 3x MS3x is kinda expensive.
    Iīve been thinking to tune stock Siemens MS42 ECU, but I donīt like FI setups with MAF sensors. I would like to use MAP sensor (speed density) . I donīt know if there is some 100% working option to run MAP on MS42 in these days..I did not find anything what seems to work..

    But I have found ECU master DET3 (Piggyback controller) what can transform MAP signal to MAF and send it back to MS42 ECU. Then I would tune MS42. It costs around 200 dollars (lot cheaper than any standalone which can run both vanoses). Do you think it is possible to tune it correctly, if I go this way??

    Actually I donīt have any experiences with tuning MS4x ECUīs yet....If you know some interesting topic concerning MS42 tuning basics or topic regarding to MAP conversion, please send me some link.

    Thank you
    Vaclav
    Czech Republic
    Last edited by haCR; 02-18-2019 at 08:28 AM.

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