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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. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        Carl Morris should be deemed the savior as he said it before anyone else did in here
        If we are getting this picky, tmo335tt texted me and the other guy the idea about the flywheel before any of this started being discussed.
      1. bigdnno98's Avatar
        bigdnno98 -
        i'm certainly no Shiv fanboi but in his defense the buyers were lined up for this kit before it was even complete. I'm sure the first few AT guys knew that shiv's shop car was a 6MT and that NO R&D had ever been done on an AT. You have to know that when you buy the first of something especially when it first comes out. Bugs will have to get worked out and that's a risk you take when you can't wait and have to be first to have it.
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by JStang Click here to enlarge
        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.
        If the problem is, in fact, the flywheel, then I can't say that I am mad. Every other single they have done was a SMFW. Nobody really suspected the DMFW would be a problem, as evidenced by the comments here, so I can't say they "should've known". I don't think any tuner, regardless of who, would have discovered this through R&D if they were running a SMFW. Now if it is not the solution, then you better damn well believe I'll be pissed off again.

        I can't comment for the ATs. That seems to be a different situation.
      1. jpsimon's Avatar
        jpsimon -
        Click here to enlarge Originally Posted by JStang Click here to enlarge
        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.
        If I were buying a turbo kit - and I am #2 on the beta list for the vargas stage 2's - but say I was buying vargas stage 3's or the single turbo kit, basically something making a massive amount of power... No I 100% would not be upset at the company selling the TURBO kit that my FLYWHEEL I previously bought had an issue at much higher power levels. That has nothing to do with R&D of the TURBO kit.
      1. DefactoM6's Avatar
        DefactoM6 -
        Click here to enlarge Originally Posted by JStang Click here to enlarge
        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.
        No, because this is a problem that plagues more than just ST owners, it is just something that has been spun as something to further the agendas of some people. I have misfires under these same circumstances. I have stock turbos. And a DMFW. If this is the fix, I will have been helped out quite a bit, and I do not have a ST car, or even RBs. IMHO, this is about as reasonable to get upset about as the DMFWs spinning in and of themselves. It's a problem with the car, not the kit.
      1. BEAR-AvHistory's Avatar
        BEAR-AvHistory -
        Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
        i'm certainly no Shiv fanboi but in his defense the buyers were lined up for this kit before it was even complete. I'm sure the first few AT guys knew that shiv's shop car was a 6MT and that NO R&D had ever been done on an AT. You have to know that when you buy the first of something especially when it first comes out. Bugs will have to get worked out and that's a risk you take when you can't wait and have to be first to have it.
        There is no defense as a number of us were banned from E90 for asking very specific questions about the suitability of the kit with stock drive train parts. Shiv said no problem with stock parts & I was just being a troll & trouble maker for bringing it up. He whined to the site owner & I was instantly banned & all posts deleted as happened to a number of other people. He had no interest in getting into areas that might raise the overall price of adding his single turbo. So much for the accuracy of his original claims.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        Carl Morris should be deemed the savior as he said it before anyone else did in here
        exactly
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BEAR-AvHistory Click here to enlarge
        There is no defense as a number of us were banned from E90 for asking very specific questions about the suitability of the kit with stock drive train parts. Shiv said no problem with stock parts & I was just being a troll & trouble maker for bringing it up. He whined to the site owner & I was instantly banned & all posts deleted as happened to a number of other people. He had no interest in getting into areas that might raise the overall price of adding his single turbo. So much for the accuracy of his original claims.
        That's $#@! behavior.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by BEAR-AvHistory Click here to enlarge
        There is no defense as a number of us were banned from E90 for asking very specific questions about the suitability of the kit with stock drive train parts. Shiv said no problem with stock parts & I was just being a troll & trouble maker for bringing it up. He whined to the site owner & I was instantly banned & all posts deleted as happened to a number of other people. He had no interest in getting into areas that might raise the overall price of adding his single turbo. So much for the accuracy of his original claims.
        That is an excellent point, although very typical and not surprising.
      1. Carl Morris's Avatar
        Carl Morris -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        Carl Morris should be deemed the savior as he said it before anyone else did in here
        Uhhh...hrrrm. I was just speculating/educated guessing. As far as I can tell they have been working on this for a while. What I find interesting is that it would appear they had no intention of talking about it publicly but perhaps changed their minds when I got close?
      1. CaptainInsano's Avatar
        CaptainInsano -
        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...
        I actually can't recommend the FX850. It took a long time to break in, and unless you can shift with your toes it's impossible to drive in stop-and-go traffic. The car just launches every time. As far as driveability on the street is concerned it's total dog meat, loud and stiff.

        That being said, once you are moving on a road course it's pure sex. BAM! torque shock all the way to the rear. You know that sucker is going to engage. I love it, but I can't recommend it to everyone.

        Come try it sometime if you are in the Bay.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by CaptainInsano Click here to enlarge
        I actually can't recommend the FX850. It took a long time to break in, and unless you can shift with your toes it's impossible to drive in stop-and-go traffic. The car just launches every time. As far as driveability on the street is concerned it's total dog meat, loud and stiff.

        That being said, once you are moving on a road course it's pure sex. BAM! torque shock all the way to the rear. You know that sucker is going to engage. I love it, but I can't recommend it to everyone.

        Come try it sometime if you are in the Bay.
        That's exactly the feeling I got driving it up here...

        and thanks for the invite! Never been there, would love to visit, say hi to Shiv and all Click here to enlarge
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by shiv@vishnu Click here to enlarge
        A DMFW is something completely different and will behave differently based upon applied torque and RPM. Both elements are coupled to something heavy and metal. What happens to the coupling mechanism (springs) and it's effect of the two masses that are spinning semi-dependantly with each other, and the effect this racket has on the toothed wheel as it passes the magnetic pick-up is the real question here.

        shiv
        Magnetic pickup? CPS is hall effect not magnetic which is part of the reason why vibrations there don't matter as much as with a magnet based CPS

        Did you have something else other than CPS in mind when you said magnetic pickup?
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Carl Morris Click here to enlarge
        Uhhh...hrrrm. I was just speculating/educated guessing. As far as I can tell they have been working on this for a while. What I find interesting is that it would appear they had no intention of talking about it publicly but perhaps changed their minds when I got close?
        they didnt change their minds, they wanted to stay quiet and say all along that NOTHING was wrong and mislead. THIS is why YOU get the credit. I dont care if they were secretly talking about it for months, noone said anything until you did. IF, IF it works, take a bow. IF it doesnt, at least you proved why its better to get public involved on things rather than promote superiority and an infallible persona
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        they didnt change their minds, they wanted to stay quiet and say all along that NOTHING was wrong and mislead. THIS is why YOU get the credit. I dont care if they were secretly talking about it for months, noone said anything until you did. IF, IF it works, take a bow. IF it doesnt, at least you proved why its better to get public involved on things rather than promote superiority and an infallible persona
        Just to be clear - Shiv was not part of the discussion prior. It was only myself, tmo335tt and the 3rd guy. Since we were all in the same boat we decided to start a discussion to tell each other what we had done, and what we were thinking about doing.

        I did not say anything in this thread because I didn't want to until I had put my new SMFW and clutch in and tried it. The cat was let out of the bag prior to that, so that's when I went ahead and confirmed it.

        If it makes everyone here happy....Carl, you are the man!!! Great job.
        I just want my damn car to work!
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        Just to be clear - Shiv was not part of the discussion prior. It was only myself, tmo335tt and the 3rd guy. Since we were all in the same boat we decided to start a discussion to tell each other what we had done, and what we were thinking about doing.

        I did not say anything in this thread because I didn't want to until I had put my new SMFW and clutch in and tried it. The cat was let out of the bag prior to that, so that's when I went ahead and confirmed it.

        If it makes everyone here happy....Carl, you are the man!!! Great job.
        I just want my damn car to work!
        I didnt mean to lump you in, obviously you posted, or at least responded to posts, removing you from that category
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        Just to be clear - Shiv was not part of the discussion prior. It was only myself, tmo335tt and the 3rd guy. Since we were all in the same boat we decided to start a discussion to tell each other what we had done, and what we were thinking about doing.

        I did not say anything in this thread because I didn't want to until I had put my new SMFW and clutch in and tried it. The cat was let out of the bag prior to that, so that's when I went ahead and confirmed it.

        If it makes everyone here happy....Carl, you are the man!!! Great job.
        I just want my damn car to work!
        Just disable misfire detection and go back to the damn track! Click here to enlarge one run and u can flash back after to whatever you want.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by themyst Click here to enlarge
        Just disable misfire detection and go back to the damn track! Click here to enlarge one run and u can flash back after to whatever you want.
        +100
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by themyst Click here to enlarge
        Just disable misfire detection and go back to the damn track! Click here to enlarge one run and u can flash back after to whatever you want.
        They can't flash at home. He would have to mail the DME in for that...
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Just disable the clearly inadequate DME software feature made for emissions guys Click here to enlarge if you get a misfire you'll know you got it only this way the DME won't worry about the environment and won't cut fuel out

        If there was a way to disable the resulting DME fuel cut while keeping misfire detection on to set the code and the CEL (so it tells you that it thinks a misfire happened) that'd probably be the best intermediary solution until its possible to adjust misfire detection itself more accordingly

        In terms of scoping the CPS signal, Shiv had his scope hooked up to the CPS signal wire, bypassed procede's CPS circuit disabling it, when he was up here 2 years ago and after 5 days of running the car all sorts of ways including scope readings there was no noise detected in the signal and I had my DMFW in there back then too