Close

    • 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. whoosh's Avatar
        whoosh -
        Lmfao @LostMarine ... I'm gonna sell my DVD of fatf and just read this thread.

        Georgia, sorry the times aren't there yet. Hope the DRs do you some good for the next trip out.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by Markyd83 Click here to enlarge
        I was hoping to hear some better times. I have not seen any posts in a couple months it seems about the single turbo guys. Ever since shift sector
        It's REALLY odd because majority of the ST N54's are in CA, which has sun year round & it should be the best track weather right now (low ambiant temps). Def hoping winter passes quickly & we get cool 50s in March so I can hit the track & see where my ProTune's got me.
      1. GetSomeE92's Avatar
        GetSomeE92 -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        DA was between 1000-1500 ft while I was there. ~80 degrees.
        Yeah. Unfortunately, the weather wasn't so great and it was a lot hotter than I thought it was going to be at this time of the year. Best weather conditions were in the morning and were long gone by the time you got there.

        Anyway, I know you're frustrated and, quite frankly, who wouldn't be? Hope you're able to get everything straightened out with the car so you can finally start enjoying it, bud.
      1. rudypoochris's Avatar
        rudypoochris -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        So track wasn't what I had hoped for. I had a couple issues (timing would zero out in 4th if I used NLS or if I shifted too quickly).
        You got flat line? Maybe Terry can help you out. I know he was waiting to tune an ST. Not sure if he has it done yet.
      1. nafoo's Avatar
        nafoo -
        Damn, I would be $#@!ing pissed if I were in your shoes. Seems like you have to keep buying $#@! on top of the kit to get anywhere near Shiv's advertised times.

        Disappointing times aside, does it atleast feel faster on highway pulls when you're in the powerband? I think your gearing and turbo is more suited to 60-130s. Have you had a chance to do 60-130s?

        I hope you get all this sorted out :/
      1. 654's Avatar
        654 -
        You got your shifting dialed in well for your stock turbo setup. Getting it working for ST as well will result a lot quicker times.
      1. aleena212's Avatar
        aleena212 -
        hi,
        Thanks for shearing nice information.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by aleena212 Click here to enlarge
        hi,
        Thanks for shearing nice information.
        Hmmm...
      1. bmw335iguy's Avatar
        bmw335iguy -
        Sorry your still having issues but thanks for sharing your results! Is there any reason you haven't been posting your times at the track over on e90? Does shiv not want potential customers to know that they shouldn't expect to match his 10 second time?
      1. LostMarine's Avatar
        LostMarine -
        lets see some slips please, include date and time on the slip
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        Damn, I would be $#@!ing pissed if I were in your shoes. Seems like you have to keep buying $#@! on top of the kit to get anywhere near Shiv's advertised times.

        Disappointing times aside, does it atleast feel faster on highway pulls when you're in the powerband? I think your gearing and turbo is more suited to 60-130s. Have you had a chance to do 60-130s?

        I hope you get all this sorted out :/
        The car 100% feels faster than with the stock turbos....except under 4000rpm.

        There is no question that it is faster, just not what I think it should be. My best trap on stock turbos 93+meth was around 117.xx, race+meth 118.9, e85/93+meth 118.

        as far as 60-130, at 60 mph I'm right under 3800rpm. I need to be higher than that.
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by bmw335iguy Click here to enlarge
        Sorry your still having issues but thanks for sharing your results! Is there any reason you haven't been posting your times at the track over on e90? Does shiv not want potential customers to know that they shouldn't expect to match his 10 second time?
        No just haven't because I'm lazy/busy with other stuff.
      1. zeel's Avatar
        zeel -
        Thanks for the update Gtech. I am glad one of the Vishnu ST's is actually running their setup and sharing results. I still want to see how the auto ST's are doing.
      1. GeorgiaTech335Coupe's Avatar
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        The numbers written in ink are the VBOX ET and MPH.
      1. rudypoochris's Avatar
        rudypoochris -
        You went down to 10:1 on the top end? Is it me or is that ridiculously rich?
      1. Terry@BMS's Avatar
        Terry@BMS -
        Given the power curve of the single I think 3.46 gears are a must have for manual transmission cars. That change alone should net you 2-3mph.
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Given the power curve of the single I think 3.46 gears are a must have for manual transmission cars. That change alone should net you 2-3mph.
        exactly what I'm thinking.
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Attachment 24708

        Attachment 24709

        Had no timing in 4th on this one. Think I shifted too quickly.

        Also, notice there is a little bit of bog on 3-4 in both graphs. I could feel this at the track.

        I'm not using NLS on any of these runs (did it on my first run, but timing flatlined so I took it off - still seemed to happen on the above run).
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        Attachment 24708

        Attachment 24709

        Had no timing in 4th on this one. Think I shifted too quickly.

        Also, notice there is a little bit of bog on 3-4 in both graphs. I could feel this at the track.

        I'm not using NLS on any of these runs (did it on my first run, but timing flatlined so I took it off - still seemed to happen on the above run).
        Nice to get more slips, thanks. ~124 traps, interesting.