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    • 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. JStang's Avatar
        JStang -
        I'm sure every community has had misfires due to flywheel play.
      1. NJrep335i's Avatar
        NJrep335i -
        Click here to enlarge Originally Posted by JStang Click here to enlarge
        I'm sure every community has had misfires due to flywheel play.

        Your probably right, if you do a search for "Dual mass flywheel misfire" in google you will see lots of information tied to it. Again, I am not saying this is the "solution" since no one has actually replaced there's yet, I'm merely saying it's worth a look into. The fact that these guys need to pay out of pocket kinda sucks though.
      1. BavarianBullet's Avatar
        BavarianBullet -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        12/10/12 at 2:22 PM



        12/10/12 at 2:27 PM



        12/10/12 at 2:33 PM

        Seems like this is where tmo found his bright idea and pitched it to Shiv.
        Not to be a dick but read the last sentence of post #174 in this thread and note the time posted as well.

        Also re the SAE paper, not exactly hard to find.

        I admit others certainly could have come to the same conclusion separately but I guess that's the point. Click here to enlarge

        Heil Shiv!
      1. Q4P's Avatar
        Q4P -
        Is there a terrible difference in driveability in between the flywheels?
      1. JStang's Avatar
        JStang -
        Click here to enlarge Originally Posted by NJrep335i Click here to enlarge
        Your probably right, if you do a search for "Dual mass flywheel misfire" in google you will see lots of information tied to it. Again, I am not saying this is the "solution" since no one has actually replaced there's yet, I'm merely saying it's worth a look into. The fact that these guys need to pay out of pocket kinda sucks though.
        It sure does. Hopefully there aren't more surprise costs associated with the kit. For the sake of the ST guys, I sure hope this ends their frustrations.
      1. bigdnno98's Avatar
        bigdnno98 -
        Drivability, no. Not really. Drives almost the same. the LWFW revs a lot faster than the DMFW but that's about it. It's all about the noise. The LWFW is obnoxiously loud. I hated it. The twin disk I have on my Evo is almost silent and it has a LWFW. I would suggest to all of the upgraded turbo guys to def look into twin disk. After driving one now I would never go back to that nonsense single disk.

        Click here to enlarge Originally Posted by Q4P Click here to enlarge
        Is there a terrible difference in driveability in between the flywheels?
      1. ChuckD05's Avatar
        ChuckD05 -
        +1 on twin disk... pricey but you have a ST do it right...

        and +10000 on TMO being a dueche... he didnt do a damn thing but read another persons idea , than use that idea for his own good, and claim he figured it out than withheld all information bc he knew people would just call him out on taking someone elses idea..

        and + rep for carl morris just quoting his thread to take every last bit of remaining credibility for TMO away...

        too funny...
      1. jpsimon's Avatar
        jpsimon -
        Click here to enlarge Originally Posted by JStang Click here to enlarge
        It sure does. Hopefully there aren't more surprise costs associated with the kit. For the sake of the ST guys, I sure hope this ends their frustrations.
        This has nothing to do with single turbos, if this is indeed the issue it will be an issue for ANYONE (dzenno) with any upgrades that make a good amount of power.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by jpsimon Click here to enlarge
        This has nothing to do with single turbos, if this is indeed the issue it will be an issue for ANYONE (dzenno) with any upgrades that make a good amount of power.
        Agree
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        +1 on twin disk... pricey but you have a ST do it right...

        and +10000 on TMO being a dueche... he didnt do a damn thing but read another persons idea , than use that idea for his own good, and claim he figured it out than withheld all information bc he knew people would just call him out on taking someone elses idea..

        and + rep for carl morris just quoting his thread to take every last bit of remaining credibility for TMO away...

        too funny...
        I drove a customer car with the twin disk FX850 in it and I really really didn't like it. I don't know if it was install related but the thing was engaging maybe 1-1.5" off the top of the clutch pedal travel. The shop that did the install on his car also installed his UUC SSK and didn't do it right (it was backwards Click here to enlarge) so anything is possible. At this moment I'm not sure if I can personally recommend the FX850 as much as I can the SPEC Stage2+ and 3+ (even with their aluminum flywheel) as I've heard and driven those as well on "this" particular car. One thing to keep in mind is clutch setups can behave differently on different platforms so comparing a twin disk on another car to this car can be apples to oranges.

        If I do get to personally try another twin disk CM FX-850 and it behaves a bit better (clutch pedal travel mostly) I'll definitely look into talking to CM and possibly carrying this clutch as well along side SPEC. I'm sticking to recommending and carrying ONLY parts that are WELL known to perform on this platform and have been tested significantly both on on the road and drag strip and/or road courses. This way proper recommendations for the type of driving can be made and people don't need to guess when making their choices out there. We simply won't just put up anything and everything on the website just so we have them available, not what we do...
      1. bigdnno98's Avatar
        bigdnno98 -
        FBIS has a twin disk if I remember right. It's hard to get a good opinion out of him though because from his reviews he seems to love everything.

        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        I drove a customer car with the twin disk FX850 in it and I really really didn't like it. I don't know if it was install related but the thing was engaging maybe 1-1.5" off the top of the clutch pedal travel. The shop that did the install on his car also installed his UUC SSK and didn't do it right (it was backwards Click here to enlarge) so anything is possible. At this moment I'm not sure if I can personally recommend the FX850 as much as I can the SPEC Stage2+ and 3+ (even with their aluminum flywheel) as I've heard and driven those as well on "this" particular car. One thing to keep in mind is clutch setups can behave differently on different platforms so comparing a twin disk on another car to this car can be apples to oranges.

        If I do get to personally try another twin disk CM FX-850 and it behaves a bit better (clutch pedal travel mostly) I'll definitely look into talking to CM and possibly carrying this clutch as well along side SPEC. I'm sticking to recommending and carrying ONLY parts that are WELL known to perform on this platform and have been tested significantly both on on the road and drag strip and/or road courses. This way proper recommendations for the type of driving can be made and people don't need to guess when making their choices out there. We simply won't just put up anything and everything on the website just so we have them available, not what we do...
      1. JStang's Avatar
        JStang -
        Click here to enlarge Originally Posted by jpsimon Click here to enlarge
        This has nothing to do with single turbos, if this is indeed the issue it will be an issue for ANYONE (dzenno) with any upgrades that make a good amount of power.
        R&D goes a long way before releasing a "finished" product. I'm sure we all could agree with that.
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by JStang Click here to enlarge
        R&D goes a long way before releasing a "finished" product. I'm sure we all could agree with that.
        Considering there's a 2-4k markup in those prices for "R&D" it better be market ready.
      1. jpsimon's Avatar
        jpsimon -
        Click here to enlarge Originally Posted by JStang Click here to enlarge
        R&D goes a long way before releasing a "finished" product. I'm sure we all could agree with that.

        We must have massively different ideas of what R&D of a turbo kit involves. You keep making it sound like this is a single turbo only issue that could have been solved with "R&D"... Again, this could hit ANYONE making a lot of power - single/twins/whatever. Assuming the flywheel is the issue, this is a flywheel issue.. not a lack of R&D of a turbo kit issue.
      1. ChuckD05's Avatar
        ChuckD05 -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        I drove a customer car with the twin disk FX850 in it and I really really didn't like it. I don't know if it was install related but the thing was engaging maybe 1-1.5" off the top of the clutch pedal travel. The shop that did the install on his car also installed his UUC SSK and didn't do it right (it was backwards Click here to enlarge) so anything is possible. At this moment I'm not sure if I can personally recommend the FX850 as much as I can the SPEC Stage2+ and 3+ (even with their aluminum flywheel) as I've heard and driven those as well on "this" particular car. One thing to keep in mind is clutch setups can behave differently on different platforms so comparing a twin disk on another car to this car can be apples to oranges.

        If I do get to personally try another twin disk CM FX-850 and it behaves a bit better (clutch pedal travel mostly) I'll definitely look into talking to CM and possibly carrying this clutch as well along side SPEC. I'm sticking to recommending and carrying ONLY parts that are WELL known to perform on this platform and have been tested significantly both on on the road and drag strip and/or road courses. This way proper recommendations for the type of driving can be made and people don't need to guess when making their choices out there. We simply won't just put up anything and everything on the website just so we have them available, not what we do...

        Understood... very true... evo world twin disk is def the way to go
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by jpsimon Click here to enlarge
        We must have massively different ideas of what R&D of a turbo kit involves. You keep making it sound like this is a single turbo only issue that could have been solved with "R&D"... Again, this could hit ANYONE making a lot of power - single/twins/whatever. Assuming the flywheel is the issue, this is a flywheel issue.. not a lack of R&D of a turbo kit issue.
        We don't know if it's the flywheel yet. It's just Shiv saying well the duals are misfiring but the singles aren't with TMo saying the crank position sensor goes nuts when it misfires.

        Let's see if the fix actually works before we hail Shiv the great savior. I certainly hope it does, for everyone's sake.
      1. ChuckD05's Avatar
        ChuckD05 -
        Carl Morris should be deemed the savior as he said it before anyone else did in here
      1. jpsimon's Avatar
        jpsimon -
        Click here to enlarge Originally Posted by themyst Click here to enlarge
        We don't know if it's the flywheel yet. It's just Shiv saying well the duals are misfiring but the singles aren't with TMo saying the crank position sensor goes nuts when it misfires.

        Let's see if the fix actually works before we hail Shiv the great savior. I certainly hope it does, for everyone's sake.
        I've said nothing about Shiv being a savior. I find it funny people are talking $#@! about R&D when what we're talking about right now is flywheels. For now that is the going theory, and we'll know soon if that fixes it or not. Seems perfectly feasible when the guys without DMFW's don't have this same issue.
      1. bigdnno98's Avatar
        bigdnno98 -
        Someone should try this Click here to enlarge

        http://advanperformanceeuro.com.au/p...an-lw-flywheel

        http://advanperformanceeuro.com.au/p...e-plate-clutch

        Prob be the last clutch/flywheel you ever purchased. Rebuild when necessary.
      1. JStang's Avatar
        JStang -
        Click here to enlarge Originally Posted by jpsimon Click here to enlarge
        I've said nothing about Shiv being a savior. I find it funny people are talking $#@! about R&D when what we're talking about right now is flywheels. For now that is the going theory, and we'll know soon if that fixes it or not. Seems perfectly feasible when the guys without DMFW's don't have this same issue.
        So you're telling me that if you paid $10k for this kit that was sold and marketed as a complete, perfectly functioning kit you wouldn't be in the least bit pissed about it? What about if you owned an AT (we all know your stance on AT) and your car didn't shift properly from 4th to 5th because the proper R&D wasn't performed. Would that make you mad? I for one, would be pissed.