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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. lulz_m3's Avatar
        lulz_m3 -
        Yep, 6MT. I don't know the guy, but I know on e90 he mentioned he was having issues with misfires on 2 cylinders. Too bad Shivs flash can't disable misfire detection.
      1. Dirty Dog's Avatar
        Dirty Dog -
        Vishnu Single Turbo at PBIR - 12.8@117 Click here to enlarge
      1. CaptainInsano's Avatar
        CaptainInsano -
        I heard he had tuning issues and was short shifting around 6200. Sounds like there were real problems. Let's let the driver speak for himself please.
      1. lulz_m3's Avatar
        lulz_m3 -
        Click here to enlarge Originally Posted by CaptainInsano Click here to enlarge
        I heard he had tuning issues and was short shifting around 6200. Sounds like there were real problems. Let's let the driver speak for himself please.
        I believe he was short shifting to avoid the misfire detection from shutting cylinders Down. Poor guy has replaced coils plugs and injectors to no avail. Another one bites the dust. He should take a tip from bigtom and buy a GTR.
      1. rader1's Avatar
        rader1 -
        I'm sure as hell not a Vishnu fanbois(hence my e90 ban... and $#@! sikh335) but i'm not going to knock them for what was potentially a fluke bad pass. The kits obviously make power but they are having issues. Issues that may not be related to the kits.

        Again, not coming from a fanbois... and, again, $#@! sikh335.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by rader1 Click here to enlarge
        The kits obviously make power but they are having issues. Issues that may not be related to the kits.
        Exactly, but no need to pretend like there can't possibly be anything that needs work or that it's all perfect.
      1. rader1's Avatar
        rader1 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Exactly, but no need to pretend like there can't possibly be anything that needs work or that it's all perfect.
        I agree 100%. They shouldn't be ridiculed for having issues because they're the first ones to really push this platform as far as they have. HOWEVER, they deserve all the $#@!, and more, that comes their way for hiding those issues(which appears to be the case.)
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by rader1 Click here to enlarge
        They shouldn't be ridiculed for having issues because they're the first ones to really push this platform as far as they have. HOWEVER, they deserve all the $#@!, and more, that comes their way for hiding those issues(which appears to be the case.)
        apparently they aren't pushing the platform any further than RBs. they seem to be going backwards actually lol
      1. themyst's Avatar
        themyst -
        The guy's having tuning/hardware issues, been there, done that. I've run 12.1@122.5 on RB turbos, does this mean I'm faster than he is? In the quarter mile maybe, but from a roll, I don't stand a chance.
      1. rader1's Avatar
        rader1 -
        Click here to enlarge Originally Posted by Ak335i Click here to enlarge
        apparently they aren't pushing the platform any further than RBs. they seem to be going backwards actually lol
        Yes and no. As far as RBs go they haven't blown them out of the water at the strip like they should have.

        However, as far as total power output, how they've shifted the torque curve to the right and 60-130 times they have blown them out the water. Or at least Shiv's car has...
      1. Autobahn335i's Avatar
        Autobahn335i -
        Disappointing result but it's unfair to judge if the car has hardware or tuning issues. Unfortunately it's a PIA to troubleshoot this neverending misfire saga on the N54.
      1. BuraQ's Avatar
        BuraQ -
        I ran the single vishnu turbo e92 yesterday, spoke personally to georgiatechcoupe335i and JMARS who has the same.setup. its nothing unique what is happening to georgiatechcoupe335i . Already so far reported or know 3 people have same identicle problem.

        So to make it very clear, so the owners do not get flamed, the car just could not dial in due to issues, and is very capable of making 117+ speed traps. In Orlando he was able to do 121+ mph in a 1/4 mile

        So if any vids come to surface please don't flame the owners of these cars, Shiv nedds to fly his azz to one of these states and diagnose the problem so it could help others
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge
        I ran the single vishnu turbo e92 yesterday, spoke personally to georgiatechcoupe335i and JMARS who has the same.setup. its nothing unique what is happening to georgiatechcoupe335i . Already so far reported or know 3 people have same identicle problem.

        So to make it very clear, so the owners do not get flamed, the car just could not dial in due to issues, and is very capable of making 117+ speed traps. In Orlando he was able to do 121+ mph in a 1/4 mile

        So if any vids come to surface please don't flame the owners of these cars, Shiv nedds to fly his azz to one of these states and diagnose the problem so it could help others
        So the old Vishnu misfire problem rears its head again? That's the issue?
      1. Tzu's Avatar
        Tzu -
        I thoguht the 6MTs were working fine? Needs more meth nozzles.
      1. amclint's Avatar
        amclint -
        Looks like the old adage still holds true that it's good to let others try out new products to make sure all the bugs are worked out Click here to enlarge
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Yes, I am having some issues with misfires at ~6500rpm, very similar to the same issue that DZENNO had (who never had a Vishnu Single). We are still working on a solution. This forces me to shift aroun 6300 or I'm guaranteed to go limp.

        At PBIR, I only managed to get one clean run, which was my first run. I was shifting at 6200-6200 (900-1000rpm short of redline). I did 12.50 at 121.6mph.

        The Friday night before at OSW I did 12.7 at 123mph.

        All these passes were at 23psi. Once everything looks good and is running right, I will go up to 25psi (which is where I would make close to the claimed 650whp). At 23 psi and at 6300rpm, it's probably making 510-520whp.

        From my experience drag racing, I'd be willing to bet a good some of money that the car will trap over 130mph when I can shift at 7200rpm at 25psi.

        Other issues I'm having is my ACT clutch is dragging. I couldn't stay still at the line and hold rpm without rolling past the beams. This also means I couldn't use 2-step to launch. Try launching a big turbo car without building boost. It is no fun and is laggy as hell, so I'm essentially wasting distance.

        I also couldn't use NLS because of the ACT clutch. It doesn't work well because of the low engagement point. ACT clutch is coming out this week for a new Spec clutch.
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        I did not have one clean run against BuraQ, unfortunately. 2 times I misshifted into 3rd, the other 2-3 times I had a misfire, all of them had bad bog off the line. I can post logs of every run if you don't believe me. I will post my slips of the 1 clean run at OSW and at PBIR.

        Also, these were all on pump 93 + meth, full street trim. No LSD or suspension mods (yet). Coil overs going in this week, and still debating on what to do with the rear end (DSS + quaife or M3 LSD and axles).
      1. Sticky's Avatar
        Sticky -
        Is Shiv experiencing this same problem on his car?

        So let me guess, the other two guys lost patience and put their cars up for sale. One is parting out the other is selling as is from what I understand.

        So, it's going to take some time for a fix or to isolate it. But 3 single turbo cars an 3 sets of misfire issues? I mean someone would have to be foolish to think they are not related to the tuning and just a coincidence at this point.

        I really hope it's straightened out for you and I have no doubt it will be. Just a matter of time it would seem. Nice to at least know what is going on though.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        I can post logs of every run if you don't believe me. I will post my slips of the 1 clean run at OSW and at PBIR.
        Not a bad idea...
      1. 654's Avatar
        654 -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        Yes, I am having some issues with misfires at ~6500rpm, very similar to the same issue that DZENNO had (who never had a Vishnu Single). We are still working on a solution. This forces me to shift aroun 6300 or I'm guaranteed to go limp.

        At PBIR, I only managed to get one clean run, which was my first run. I was shifting at 6200-6200 (900-1000rpm short of redline). I did 12.50 at 121.6mph.

        The Friday night before at OSW I did 12.7 at 123mph.

        All these passes were at 23psi. Once everything looks good and is running right, I will go up to 25psi (which is where I would make close to the claimed 650whp). At 23 psi and at 6300rpm, it's probably making 510-520whp.

        From my experience drag racing, I'd be willing to bet a good some of money that the car will trap over 130mph when I can shift at 7200rpm at 25psi.

        Other issues I'm having is my ACT clutch is dragging. I couldn't stay still at the line and hold rpm without rolling past the beams. This also means I couldn't use 2-step to launch. Try launching a big turbo car without building boost. It is no fun and is laggy as hell, so I'm essentially wasting distance.

        I also couldn't use NLS because of the ACT clutch. It doesn't work well because of the low engagement point. ACT clutch is coming out this week for a new Spec clutch.
        Congrats on the good results despite of the misfiring. This seems to be a difficult problem with the high powered end of the N54 platform and I hope you will find a solution other than turning the misfire detection off.