F34 335d GT REMAP????

Discussion in 'Technical Troubles' started by Stokielad, Oct 25, 2018.

  1. Stokielad
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    Stokielad

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    I wonder what gearboxes the 640d’s run then as I though they both have the same engine
     
  2. Mieke
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    Mieke WARLORD Site Supporter

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    That's good advice from @bishbosh. The transmission will be the limiting factor on handling any power increase. I chipped a Golf GTi PD150 to get an extra 20% torque. It felt great each time I used the acceleration, but 6 weeks later my clutch was Kaput. :( Not worn out, but distorted the pressure plate. I had to shell out for a heavy duty replacement. Manuals tend to be capable of handling more power/torque than automatics, so just use some caution.
     
  3. Stokielad
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    Stokielad

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    I did my research when I remapped my 530d and I was told by many people that the auto transmissions were stronger than the manuals.

    Completely agree....I won’t be getting the remap done if any of the mechanical parts can’t handle it.
     
  4. markyboyt
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    markyboyt

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    The 8hp70 has a max torque handling of 700Nm.
    I think auto boxes actually handle torque better because of the torque converter, that’s why the 335d’s have always been automatic only. The GS6-53 manual fitted in E90’s has the same 600Nm torque limit as the 6hp26 Auto but would need a strong clutch to transmit it effectively.
     
  5. bishbosh
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    bishbosh WARLORD Site Supporter

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    Usually the torque converter is the limiting factor. I remember the e90 320d performance power kit - the auto version cost more as it included an uprated torque converter.
     
  6. markyboyt
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    markyboyt

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    which engine was that for though?
    The 320d's seem to have the lower rated 6hp19 so must be that the torque convertor was rated lower than the max of the box or something as the box is listed as a 400Nm on its wiki.
    The manuals depend on engine more so with earlier ones having 370Nm rated and later having 470Nm
     
    Last edited: Oct 27, 2018
  7. bishbosh
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    bishbosh WARLORD Site Supporter

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    That was for the n47 engine.
     
  8. Stokielad
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    Stokielad

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    So I’m assuming the
    Oh dear so hat rules out then DMS remap as 560lbft equates to 759NM so looks like it will shorten the life of the transmission
     
  9. bishbosh
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    bishbosh WARLORD Site Supporter

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    If the tuner actually tunes it properly, i.e. On a rolling road rather than just sticking on a generic map, then you can ask them to limit torque to something sensible - 680Nm for example.
     
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  10. Stokielad
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    Stokielad

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    I give them then a call on Monday as there website states they use a rolling road for all their remaps, but not sure if that just for the development of them rather than installation the map into customers cars
     
  11. Adie
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    Adie WARLORD Site Supporter

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    To limit the torque they can adjust the maximum boost available for each gear

    boost reduction.jpg
     
  12. Stokielad
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    Stokielad

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    So I’ve receieved the following response back from my local dealer with regards to the superchips remap. As it’s a mobile service I’m assuming it’ll be a generic installation rolled out for all 335d, and not a bespoke installation. Or is that as bespoke as you can get.

    See below :-

    BMW 335 d/xDrive F30/31 (313HP)
    6/2013 onwards
    Engine type : Turbo-Diesel
    Engine size : 2993 cm3
    Engine code :N57 D30TOP
    Cylinders : 6

    Original bhp : 309
    Original nm : 630
    BHP increase : 66
    NM gain : 123
    Lb/Ft gain : 91
    Boost at standard : 31 psi 2.1 bar
    Boost modified : 34 psi 2.3 bar
    Speed Limit Removal : Available

    Price (inc. VAT) : £339.00
    Call out £65.00
     
  13. bmwzoom
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    bmwzoom

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    Exactly ^^^^ 700 NM max
     
  14. bmwzoom
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    bmwzoom

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    I used Simon from emaps a few yrs ago he was very good
     
  15. Stokielad
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    Stokielad

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    Simon remapped my E60 530d a few years ago too, he came down to the Spectrum centre Spectrum centre in Guildford and about 8 or 9 of went in different slots. He was very good
     

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