BMW 123d chip tuning

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  1. BMW 123d chip tuning 
    #1
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    Please anyone knows differences between superchips that I can buy on ebay for £100 and this, that costs £400 on the tuning web sites? Does it work the same? Can it damage engine somehow? Witch one I should chose? What would you recommend? Please help? and how I can take off engine cover in my car?
     
     

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    The cover in my 118d SE is held down by a couple of 10mm bolts which are obvious.

    I don't know about the cheap chips on eBay - why would you expect that to be better than a 'proper' one.

    Two weeks ago I had a 'proper' one fitted by DTUK (Google them) and it has transformed the car.

    There seems to be some prejudice here regarding chips, but in 5 minutes or so you can remove it and there is no sign it's ever been there.

    Mine was one that connected to the common rail plug AND the turbo sensor.

    I've got the same mpg so far, simply because I've been hoofing it and enjoying the extra acceleration. Had I driven 'carefully', I'd have had an improvement in fuel consumption.
     
     

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    Quote Originally Posted by brianwmay View Post
    ....

    Mine was one that connected to the common rail plug AND the turbo sensor.

    I've got the same mpg so far, simply because I've been hoofing it and enjoying the extra acceleration. Had I driven 'carefully', I'd have had an improvement in fuel consumption.
    Did you read the page my esteemed colleague ? This explained why you are seeing such figures. Try a brim to brim manual method.
    2013, Porsche 911 Carrera 4S, PDK, Sports Exhaust, Chrono, etc, etc

    *removed

    BFUK weekday crew

    PLEASE READ THE POSTING RULES & HOW TO CORRECT THREAD TITLES & THE SELLING RULES
     
     

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    Thanks very much.
     
     

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    I just tought, why would be chip for 100quit worst then the one for 400?
     
     

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    Well, (I'm not a fan of tuning boxes, but once I've said all there is, it's still your choice!) if the DTUK one for your car connects to the turbo pressure sensor too, you'll get more boost at the same time.

    That will be better than one that just intercepts the rail pressure signal. As you mention, the main difference between a cheap one that plugs into the rail sensor, and an expensive one is how much profit they make.

    They won't be speed sensitive, there won't be any alternator ripple in the signal voltage output from the ECU, so they are blind to engine speed.
    By introducing a resistance or output voltage ( as many high accuracy sensors are capacitive - http://www.sensorland.com/HowPage018.html) they will just make the car boost the rail pressure.
    More diesel = more power.
    Tapping into boost will help, as it'll be cleaner, but turn it up too high, and the car will eventually figure out something is amiss.
     
     

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