n54 issues

  1. Lowboost35

    Build N54 Headgasket problems advice please

    Hello guys long story short. N54 lift head gasket once on 17T FBO 550whp. After that i go for build engine rods pistons , cutom exhaust manifold runing single turbo 8hp70 etc... lift head again at 600whp power range turns out that ARP heat studs pull a treath from cyl 6. New cylinder head now...
  2. T

    VTT Manifold

    Hey all, I was wondering if anyone else has the VTT forward facing manifold? I attempted to install mines but was faced with hood clearance issues. The hood seems to rest on top of the TB/charge pipe area not allowing me to close my hood. There's roughly about a 3" gap between the hood and the...
  3. J

    Overcharge voltage

    Hi all, first post. Was and am still having overcharged voltage issues for my car. Dash it lit up like a Christmas tree and cluster is not working rpms/speedometer.. wipers are also going off. Battery is new and coded, alternator was replaced and just today I replaced the regulator. Car is still...
  4. LavosB

    Whistling sound at high revs and speed

    Hey guys! I have a e60 535i with the N54 engine and recently after doing the MHD backend flash with the JB4, I noticed a whistling noise coming from the left side of the engine bay ( if you sitting in the driver seat it’s left side), when I get over 80km/h and over 5000 rpms. Does anyone know...
  5. stelvio

    N55's...how reliable?

    Hello people of SS. I just recently sold my N54 335i and was looking into the N55's due to so many issues that the N54's had. I N54's are known for wastegate rattle, vanos solenoids, cam ledge issues, HPFP, etc, etc...but I'm wondering how much more reliable and/or improved is the N55 engine...