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E9X VTT E9X N55 Twin Turbo conversion 500-750WHP capable. Starting Under $4000

Discussion in 'N55' started by [email protected], Aug 22, 2017.

  1. We plan on doing all we can to make our F series kit fit the M2's yes
  2. JQuach07

    JQuach07 New Member

    Wow this is very interesting. I wish I didn't rush on the big turbo kit on my F-Series n55 now
  3. the basic conversion kit will work with other n54 turbo upgrades?
  4. These upgrades that will ONLY work with the GC's. Our original goal was to allow any N54 turbochargers to be used including stock turbos etc. But the space constraints did not allow that. You have to be able to reclock the turbos for everything to fit. This means the turbos have to be on V-bands like the GC's are, other wise its a no go
  5. Ah that makes sense. Thank you for the quick reply.

    Do you have any dyno comparison between the GC lite n55 dyno vs an n54? I figure its an apple to oranges comparison, but I would be curious to see if there is any obvious differences.
    Last edited: Aug 22, 2017
  6. Bnks334

    Bnks334 Specialist

    You can always review their N54 dynos. N55 should make the same, if not more, power with the same setup.

    Problem with big twins is that the torque down low tends to break things
  7. Bnks334

    Bnks334 Specialist

    Yeah for sure I've been holding out for better options than PS2. I'd like to steer away from having to drive a turbo outside of its efficiency range to hold power up top. I would also really like to stay DI only to make that 550whp.

    Was this a DCT car dyno'd? Same sprocket as the S55 DCT hub that BMW has used since 2001?
  8. This car is a manual. I ordered a new hub, its a different part number than the N54, and S55.
  9. BKBMW335I

    BKBMW335I Lurker

    Man this is totally awesome, you did it. Finally something for the N55ers!!
  10. all4bspinnin

    all4bspinnin Specialist

    135i TT

    Tony, did Ken say anything about those timing corrections around 2k to 3k?

    Nice job with the swap. I love the idea.
  11. Ken didn't do any tuning on the car directly. He sent me a starter map that he was running on his car, and I did all the tweaking on it, well before the hub spun. Wasn't really concerned with the corrections. 100,000 mile motor, could be any number of things. Power was there, and was smooth, DME was doing its job pulling timing if it was hearing knock.

    For anyone who was wondering, I can confirm the crank bolt backed out, and let the valves say hello to the pistons. The got into a bit of a scuffle. The pistons won. We will replacing the head, hub assembly, and putting a Crank bolt capture on it. They seem to use the same one as the S55.
  12. all4bspinnin

    all4bspinnin Specialist

    135i TT
    Damn man, sorry to hear about the failure. Have you been seeing more and more of these crank hub issues?
  13. Its getting extremely prevalent. Its why we are investing in a complete solution to offer up so people including us do not have to deal with this anymore.
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  14. mangospringroll

    mangospringroll Lurker

    2011 BMW 335i coup
  15. Eric17856

    Eric17856 Private

    South Jersey
    2009 335i
    Looks great! Making big power on these N55's. Can wait to see how far people will push these things
  16. Yeah its a real bummer, mostly for the customer who thought his car was almost finished. We have been seeing more, and more of them yes.
  17. terryd5150

    terryd5150 Specialist

    2008 E92 335i 2009 E90 335i
    Will the Double Barrel HPFP option work on an N55 or only the Single Barrel (due to DME placement)?
  18. Twisted Tuning

    Twisted Tuning Lieutenant Vendor

    I'm really curious about the crank hubs. I have several N55s from 500whp to almost 800whp and none have hub issues.
  19. It will fit on the 2011 N55's only yes
  20. Twisted Tuning

    Twisted Tuning Lieutenant Vendor

    Thanks, but I was more so asking/wondering how or what is causing these issues for you. Since I haven't had these issues on the multiples of high powered N55 I have.

    So you feel it's definitely the crank bolt loosening up?