M57 turbo removal

M57 turbo removal


  • Engine & Tuning
  • BMW Intake Swirl Flap Removal
  • N54 Turbo Replacement on BMW 335i, 135i, 535i, X6, and Z4
  • ECU Tuning
  • Engine & Tuning

    Please note, we are located in Christchurch, Dorset, UK. Please do not contact us if you are not local to us. What are intake swirl flaps? The intake swirl flaps are fitted to the intake manifold, just before the cylinder head intake valve port to create, as the name suggests to swirl the air before entering the combustion chamber. This is used at idle and low engine rpm to slightly improve mpg and emissions. However over time the swirl flaps become covered in carbon build up, mainly from oil residue from the turbo and the good old EGR - exhaust gas recirculation valve.

    This carbon build up over time on the swirl flaps restricts the air flow and function, opening and closing of the valves.

    Making the swirl flaps actually worse for engine efficiency when the vehicle is older with more miles on the clock. Long term risks Then of course worse still, the risk of the swirl flap deforming causing it to work loose and rattle off in to the engine causing large internal damage. Therefore it is strongly recommended to have the swirl flaps removed if your Diesel BMW is over 6 years old or 60, miles. Which BMW engines does this effect?

    Then the 6 cylinder M57 and N57 engines. The earlier M engines had metal swirl flaps fitted, where we removed to swirl flaps and fit blank plates to where the flaps once were, removing the restriction and possible failure of the flap.

    We also manually clean excess carbon build up from the manifold whilst the manifold is removed. They have completely redesigned the intake manifold and swirl flaps, using a large rod with plastic swirl flaps. Unfortunately the plastic flaps wear from engine vibration and movement over time, causing them to work loose.

    We remove the plastic flaps and metal bar to prevent restriction and possible failure of the flap. At present, the newer B Diesel engines on wards do not seem to suffer the same issue. However as these become older, we suspect there will be a need to remove these.

    As they are a similar design to the previous N engines. We already have the blank plugs ready to be fitted here at Burch Motor Works. Please note, on the later B series engines — possible ECU map adjustments are required to allow swirl flap removal prevent engine light on with limp mode. Call to book your car in for a service. Recent News.

    The service can include: Stage 1 or stage 2 performance tuning See our Engine and Tuning page for power estimates for your engine. Automatic or Manual Conversion MAF sensor removal DPF removal Speed signal removal usually without a speed input the engine will stop revving at 4, rpm Limiter changes Swirl flaps do not need mapping out, please remove your swirl flaps but leave the swirl flap actuator plugged in.

    Maps are created to your specification so it is paramount that you include any relevant information. Any modifications to the map due to information that was not provided will be charged at full rate. We will not cater for hardware changes such as hybrid turbos other than map sensor changes.

    By purchasing this product you acknowledge the risk that tuning an engine may highlight weak or failing components, some of which could cause damage to your engine if they fail such as turbo seals. Since this product is custom, please allow up to 2 weeks from receiving your ECU in order for the work to be completed. In most cases it will be less. Note: Sensors you should keep It is quite common for customers completing engine swaps to want to bin as many sensors as possible — this is understandable.

    We have put together the following list of sensors that should be kept and the reasons why. Should be kept to enable live AFR adjustments. Should be kept to allow for EGT protection. Swirl flap and EGR vacuum solenoids — Keep these plugged in even if you have deleted the valves. We have seen this cause intermittent boost issues by being unplugged. Related products.

    Automatic or Manual Conversion MAF sensor removal DPF removal Speed signal removal usually without a speed input the engine will stop revving at 4, rpm Limiter changes Swirl flaps do not need mapping out, please remove your swirl flaps but leave the swirl flap actuator plugged in.

    Maps are created to your specification so it is paramount that you include any relevant information. Any modifications to the map due to information that was not provided will be charged at full rate. We will not cater for hardware changes such as hybrid turbos other than map sensor changes.

    By purchasing this product you acknowledge the risk that tuning an engine may highlight weak or failing components, some of which could cause damage to your engine if they fail such as turbo seals. If the car bases the boost leak and vacuum tests then the likely culprit will be the wastegates.

    BMW Intake Swirl Flap Removal

    If the wastegates are the problem on your N54 the proper solution is a turbo replacement. Unfortunately this is a time consuming repair due to the inaccessibility of the turbos. We remove the front subframe to gain better acessto remove and reinstall the turbos. Because of this we often suggest that customers replace the oil pan gasket and do an oil change at the same time when having this service done.

    Doing the oil pan gasket at this time can save quite a bit of money down the road if the pan does start leaking.

    N54 Turbo Replacement on BMW 335i, 135i, 535i, X6, and Z4

    The earlier M engines had metal swirl flaps fitted, where we removed to swirl flaps and fit blank plates to where the flaps once were, removing the restriction and possible failure of the flap. We also manually clean excess carbon build up from the manifold whilst the manifold is removed. They have completely redesigned the intake manifold and swirl flaps, using a large rod with plastic swirl flaps.

    Unfortunately the plastic flaps wear from engine vibration and movement over time, causing them to work loose.

    ECU Tuning

    We remove the plastic flaps and metal bar to prevent restriction and possible failure of the flap. At present, the newer B Diesel engines on wards do not seem to suffer the same issue. However as these become older, we suspect there will be a need to remove these.

    As they are a similar design to the previous N engines.


    thoughts on “M57 turbo removal

    1. It is a pity, that now I can not express - I hurry up on job. But I will be released - I will necessarily write that I think.

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