E39 M5 remap any point?

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  1. E39 M5 remap any point? 
    #1
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    The above really. Is there any gains to be had with remapping a E39 M5?

    Just about to pick one up.
     
     

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    DSK
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    If I ended up having to get an E39 M5 a few months back I would have had it remapped even though it goes well enough as standard.

    Based on the fact that my aunts E36 M3 (3.2) was reampped and my E34 M5 (3.8) was mapped, the difference in performance for the cost of a decent remap is worth it.

    i) you won't find yourself pissing about with shiny exhausts and pointless intake system which do nothing except drain your wallet.

    ii) on the E36 M3 and E34 M5, as with many M cars, they are a bit flat at the bottom end of the rev range and really only work when the revs are kept in the top 1/4 of the rev band. However follwing the ECU upgrades, there was a subtle enhancement in the sharpness and slightly improved acceleration (torque) in the bottm half of the rev range, making driving in real world situations more pleasant, providing more flexibility. As the cars came on line within the rev bands, due to the increased ehancements lower down the step in the power curves felt consistent yet got stronger in the top range with less of a spikey feel in the power curve. As a result, for the money, the gains are very subtle enhancements that *should* result in a slightly more flexible rev band for real world driving and also giving an subtle increase in power in the upper rev range.

    The only thing I would say is that you should ensure that all the engine, fuel and ingition parts are in good order and nothing is starting to perish due to age (such as injector seals, leaking exhaust/intake gaskets etc) as these will not allow the full effects of a remap to be achieved.

    * Also, personally, if I had got the E39 M5, I would have been going for a more driveable ECU remap that gives a cleaner torque and power curve rather than having a pointless little bit of extra bhp only at the top end. A cleaner torque and power curve will compliment the 5.0ltr V8 engine very nicely. Just be sure to shop around and always go for a quality ECU remap, ask to be shown post curves before selecting a remap and parting with any money.

    IIRC, my M5 was done by BBR tuning, this map was more agressive (compared to my aunts M3 which was done elsewhere) but back then it had generally good reviews across other marques and back then there were not as many people doing the ECU upgrades as there are now.
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    the lump rarely makes 400 bhp as standard so a remap is definitely the way forward, it'll transform it.
     
     

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    I only just remapped you 530D a little while ago
    Let me know if I can be of help on the M5 for you.
     
     

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    Quote Originally Posted by APTuning View Post
    I only just remapped you 530D a little while ago
    Let me know if I can be of help on the M5 for you.
    You mean the 535D

    Will give you a bell as soon as it's serviced
     
     

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    Quote Originally Posted by ant123456 View Post
    You mean the 535D

    Will give you a bell as soon as it's serviced
    Oh yeah silly me. I look forward to hearing from you Ant. I take it the 535D just isnt enough power for you after coming down from a 600bhp evo.
     
     

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