• Trouble in paradise? Vishnu/FFtec N54 335ii Single Turbo kits experiencing issues as a BimmerBoost member runs 12.5@121 with misfires and having to short shift

      BimmerBoost would like to thank member GeorgiaTech335Coupe for his openness and honesty regarding his Vishnu/FFTEC single turbo setup. Recently, this member took his single turbo upgraded 6-speed manual 335i to the PBIR (Palm Beach International Raceway) dragstrip in Florida to do some testing. His best run was a 12.50@121.6 alongside a 12.8@117. Yes, these times are quite a ways away from the 10.8@131 glory pass from Vishnu demonstrating the kits capability.


      This is in no way the fault of GeorgiaTech335Coupe who experienced misfires on his car and had to short shift at 6300 rpm in order to avoid them. Now, Vishnu has basically portrayed this kit as perfect and ready for sale with nobody having any issues. The reason BimmerBoost is bringing this issue to the attention of the community is for potential buyers to understand what they are getting into.


      There is absolutely nothing wrong with having issues when modifying a car to this level and BimmerBoost is confident Vishnu will resolve them. There is something wrong with pretending nothing is wrong. A few cars with the single turbo kits have gone up for sale and apparently a total of three people, that are willing to open their mouths, are having misfire issues with these kits.

      These issues will no doubt get resolved but potential buyers and current customers needs to be aware of the process, effort, and that progress is being made. Pretending nothing is wrong and collecting money simply is the wrong way to go about this and once again (it's becoming a trend) BimmerBoost is the only site bringing these issues to the attention of the community.

      For the record, a member by the name of @tmo335tt says he has a hardware solution for the misfires that he will likely share with Vishnu (hopefully not for free). Interesting that it isn't Vishnu but the community solving this.

      Thanks again to @GeorgiaTech335Coupe for sharing his details, good or bad, as we all learn thanks to honesty and openness. There is more to tuning than just collecting money.
      This article was originally published in forum thread: Vishnu Single Turbo at PBIR - 12.50@121.6 having to shift all gears at 6300rpm started by Sticky View original post
      Comments 1090 Comments
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by tmo335tt Click here to enlarge
        "as of now, who has a 6266 up and running on a 335i? isnt shivs a 6262

        theres a decent difference in the two http://www.bimmerboost.com/images/sm...icon/smile.gif"

        You will see why when you drop the sub frame to try and fit it in there.
        ok my question should have been: what is the biggest turbo runnnig on a 335 now 6262?
      1. rader1's Avatar
        rader1 -
        Click here to enlarge Originally Posted by Ak335i Click here to enlarge
        as of now, who has a 6266 up and running on a 335i? isnt shivs a 6262

        theres a decent difference in the two Click here to enlarge
        I thought Shiv was running a 6266 and the other guys were 6262s. Maybe i was mistaken. Hell, that just further proves my point about small turbos lol
      1. tmo335tt's Avatar
        tmo335tt -
        Click here to enlarge Originally Posted by Ak335i Click here to enlarge
        ok my question should have been: what is the biggest turbo runnnig on a 335 now 6262?

        correct and it would be very difficult to fit anything larger. It would have been done if it fit, trust me. If you put the turbo in another location maybe it would be doable but a ton of work. The 6262 barely fits.
      1. Q4P's Avatar
        Q4P -
        They need to quit being girls; build the motor and stick a Gt4780 on. I mean they did say it was a modern supra; right? lol
      1. Ak335i's Avatar
        Ak335i -
        all noted Click here to enlarge
      1. Ak335i's Avatar
        Ak335i -
        remember the name Ak335i lol
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by Q4P Click here to enlarge
        They need to quit being girls; build the motor and stick a Gt4780 on. I mean they did say it was a modern supra; right? lol
        Oh sure, you can stick a GT47 on a stock motor Supra Click here to enlarge
      1. Q4P's Avatar
        Q4P -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Oh sure, you can stick a GT47 on a stock motor Supra Click here to enlarge
        are you talking about this tiny thing?

        Attachment 22864
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by Q4P Click here to enlarge
        are you talking about this tiny thing?

        Attachment 22864
        Sure Click here to enlarge lol try that on a stock motor supra and turn it up!
      1. Legionofboom's Avatar
        Legionofboom -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Sure Click here to enlarge lol try that on a stock motor supra and turn it up!
        you could push it, or toe it..
      1. Q4P's Avatar
        Q4P -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Sure Click here to enlarge lol try that on a stock motor supra and turn it up!
        The funny thing is that I think the turbo on the right may be smaller than what Shiv is using lolol.
      1. Eric335's Avatar
        Eric335 -
        Click here to enlarge Originally Posted by Q4P Click here to enlarge
        The funny thing is that I think the turbo on the right may be smaller than what Shiv is using lolol.
        Haha thats what i was thinking. The GT47 could swallow up a small dog
      1. Carl Morris's Avatar
        Carl Morris -
        Click here to enlarge Originally Posted by Q4P Click here to enlarge
        We will not see a consistent 10 second 335i full street car ever...
        Everyone has a different definition of "full street" and I'm not sure whether RWD guys will do this and still meet your definition. But I predict that eventually it will be XI guys that prove you wrong by any definition.
      1. tmo335tt's Avatar
        tmo335tt -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Sure Click here to enlarge lol try that on a stock motor supra and turn it up!
        What flywheel are you running? Were you ever running the stock dual mass when you encountered your misfire issues?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by tmo335tt Click here to enlarge
        It is no secret that the N52 has major problems with bad lifters, the N54 uses the same lifters (same part #). I know this SIB doesn't list the N54 but we could still be experiencing this same issue that causes problems with many other BMW engines.

        Situation 2


        Binding HVA element.
        Cause
        An HVA element which is binding (element stuck in the extended position) will not allow avalve (intake or exhaust) to seat properly causing valve seat leakage.
        This type of HVA failure may not cause a tapping/rattling noise but the customer complaint may be, "engine runs rough during the warm up phase and runs good when warmed up" and/or the "Check Engine" lamp is on.
        If the "Check Engine" lamp is illuminated due to a binding HVA element(s) one or more misfire fault codes may be set in the Engine Control Module (ECM/DME).
        Note: Basic troubleshooting should be performed First before checking for a binding HVA element to eliminate all other possible factors/components which could set the misfire faults such as low fuel level, a faulty spark plug, etc.
        Troubleshooting Tips:
        If there is a binding HVA element in one or more cylinders as described above a misfire fault can typically be reproduced in the affected cylinderfs) by duplicating the conditions in which the misfire occurred according to the DME/ECM fault code description i.e., at engine temperature = X, engine speed = X, etc.
        A binding HVA element which is causing a misfire in one specific cylinder will not "move" to an other cylinder and will always cause a misfire fault in the affected cylinder.
        Performing the "Smooth-Running" test (found in the DME control unit functions section of DIS) will assist in pin pointing a cylinder with a binding HVA element.
        A cylinder with a binding HVA element will indicate a high reading when compared to the other good cylinders.
        Since a binding HVA element may in some cases be intermittent (engine only runs rough when cold) if a cylinder leak down check is used for troubleshooting this should be performed when the problem exists, for example: compare the cylinder leakage rates to each other with a cold engine to determine the cylinder with the extreme leakage rate.
        A cylinder with a binding HVA element will indicate a leakage rate above 15%.
        Remove suspected HVA elements and visually inspect.
        A binding HVA element will typically have a high pressure piston (located in the center of the HVA element body) which extends out approximately 3 mm further when compared to the other HVA elements removed from the cylinder head.
        Replace any binding HVA element(s) and check others for extreme wear (deep grooves, scratches, etc.) which may also need to be replaced.
        Note: Always reinstall used HVA elements in the same bore which they were removed from. This prevents possible binding due to different wear patterns between the bore in the HVA housing and HVA element.



        http://www.enginebuildermag.com/Arti..._problems.aspx
        You sir raise an interesting theory and a great point here.
      1. tmo335tt's Avatar
        tmo335tt -
        I think that I have another and better theory now. Just wanna know the what Dzenno is or was runnig.
      1. 654's Avatar
        654 -
        Click here to enlarge Originally Posted by tmo335tt Click here to enlarge
        What flywheel are you running? Were you ever running the stock dual mass when you encountered your misfire issues?
        He got the misfires with DMFW. Georgiatech335 could test if single mass flywheel helps.
      1. tmo335tt's Avatar
        tmo335tt -
        Click here to enlarge
      1. Q4P's Avatar
        Q4P -
        Click here to enlarge Originally Posted by Carl Morris Click here to enlarge
        Everyone has a different definition of "full street" and I'm not sure whether RWD guys will do this and still meet your definition. But I predict that eventually it will be XI guys that prove you wrong by any definition.

        I am not the one that ever claimed he is selling a full street package 10 second car; Shiv did... just going to point that out.
      1. tmo335tt's Avatar
        tmo335tt -
        I know that there is nothing wrong with Shivs tune or the Procede.