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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. GetSomeE92's Avatar
        GetSomeE92 -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        I might be going to PBIR track rental this Sunday. Haven't decided yet. Also depends if I get my new tires in by tomorrow. Front tires have some damage and aren't really safe to drive on currently.

        Got coil overs installed with springs setup slightly towards dragging, so hopefully it offers a little more traction at the strip.
        I'm signed up to go to this rental, so post up if you're going to make it and I'll keep an eye out for you. Looks like we finally may have some good weather.
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by GetSomeE92 Click here to enlarge
        I'm signed up to go to this rental, so post up if you're going to make it and I'll keep an eye out for you. Looks like we finally may have some good weather.
        OK. I'll decide by tomorrow if I can make the time to go.
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by GetSomeE92 Click here to enlarge
        I'm signed up to go to this rental, so post up if you're going to make it and I'll keep an eye out for you. Looks like we finally may have some good weather.
        I will be going. Hopefully I can wake up early enough to not get there late. Have about a 2.5 hour drive.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Sweet. Dump in the race gas, crank that boost up, and aim for 130mph! Click here to enlarge
      1. GetSomeE92's Avatar
        GetSomeE92 -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        I will be going. Hopefully I can wake up early enough to not get there late. Have about a 2.5 hour drive.
        Sounds good, bud. I'll keep an eye out for you. I have the Space Gray coupe. I'm going to try and get there early as the track prep and weather will likely be the best it will be for the day at that time.
      1. whoosh's Avatar
        whoosh -
        Soooo... Results from the track day?
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by whoosh Click here to enlarge
        Soooo... Results from the track day?
        Vince: There were mass cops out there, that $#@! was orchestrated.
      1. RnmEvo9's Avatar
        RnmEvo9 -
        I keep coming back like a buster in hopes of seeing some 130+mph trap speeds.
      1. LostMarine's Avatar
        LostMarine -
        Where's he going?
        He went to the car wash
        Whatever. Go fetch my car!
        Go fetch your car? We're not on your block any more. You better watch who you talk to like that.
        TORETTO! TORETTO! SWAT came into my house, disrespected my whole family because somebody narc'd me out! And you know what? IT WAS YOU!

        *I never narc'd on nobody! I never narc'd on nobody!*
      1. Terry@BMS's Avatar
        Terry@BMS -
        In for the track update!
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        I will be going. Hopefully I can wake up early enough to not get there late. Have about a 2.5 hour drive.
        I'll book a wake up call for ya Click here to enlarge
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        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). Ran a little bit of race gas so I could hot lap (got there late, 1:30), but left the boost level at what I daily drive at ~23-24psi to get a feel of what it could do in the street setup.

        Bottom line:
        I ran 12.0x at 124.89 mph.

        Needless to say I was disappointed. I think a big factor in this is my gearing. 4th gear is just too long. At 125mph, 4th gear is under 6000rpm. I think I see a 3.46 rear end with LSD in the very near future.

        My drag radials are very, very bald so that made it tough to get out the hole. I have new ones coming in Thursday. I'm also going to get a dedicated wheel setup for the strip eventually.

        I'm not sure how others were running. My friend who has a 730whp 2013 GT500 was trapping around ~129mph. He was happy he finally broke 10s though.

        Last, my VBOX was reading usually 0.3s slower than my slip. On one of my 12.0x runs, it read 12.2. MPH was just about always 1mph faster (expected). I really think the timing blocks at PBIR are not setup correctly. My 60' times seem a lot better than how they feel from experience...and I have done probably 400 passes in this car. I datalogged all my runs, I'll post up some of those as well as the slips. I wrote the VBOX time and mph on each slip as well so I wouldn't forget the discrepancy. Unfortunately, I couldn't confirm with someone else who had a VBOX if there's was showing the same discrepancies as mine. Maybe my VBOX could be wrong? I don't know, but if I had to guess I'd say it wasn't and that PBIR has inflated times (or deflated? cause they are lower?).
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        DA was between 1000-1500 ft while I was there. ~80 degrees.
      1. bigdnno98's Avatar
        bigdnno98 -
        Thanks for the update. Disappointing track days always suck. Drag racing this car is difficult on its own super difficult with 6MT.
      1. bigdnno98's Avatar
        bigdnno98 -
        Shiv cut a 1.5 60' and still barely broke into the 10s.
      1. LostMarine's Avatar
        LostMarine -
        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). Ran a little bit of race gas so I could hot lap (got there late, 1:30), but left the boost level at what I daily drive at ~23-24psi to get a feel of what it could do in the street setup.

        Bottom line:
        I ran 12.0x at 124.89 mph.

        Needless to say I was disappointed. I think a big factor in this is my gearing. 4th gear is just too long. At 125mph, 4th gear is under 6000rpm. I think I see a 3.46 rear end with LSD in the very near future.

        My drag radials are very, very bald so that made it tough to get out the hole. I have new ones coming in Thursday. I'm also going to get a dedicated wheel setup for the strip eventually.

        I'm not sure how others were running. My friend who has a 730whp 2013 GT500 was trapping around ~129mph. He was happy he finally broke 10s though.

        Last, my VBOX was reading usually 0.3s slower than my slip. On one of my 12.0x runs, it read 12.2. MPH was just about always 1mph faster (expected). I really think the timing blocks at PBIR are not setup correctly. My 60' times seem a lot better than how they feel from experience...and I have done probably 400 passes in this car. I datalogged all my runs, I'll post up some of those as well as the slips. I wrote the VBOX time and mph on each slip as well so I wouldn't forget the discrepancy. Unfortunately, I couldn't confirm with someone else who had a VBOX if there's was showing the same discrepancies as mine. Maybe my VBOX could be wrong? I don't know, but if I had to guess I'd say it wasn't and that PBIR has inflated times (or deflated? cause they are lower?).
        Dom: I said a ten-*second* car, not a ten-*minute* car.
        Jesse: You could push this across the finish line, or tow it.
        Dom: You couldn't even tow that across the finish line.
        Brian: No Faith.
        Dom: I have faith in you, but this isn't a junkyard.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        I'm not sure how others were running. My friend who has a 730whp 2013 GT500 was trapping around ~129mph. He was happy he finally broke 10s though.
        Your friend needs new tires or a driver mod, especially if that's just ~5 MPH over stock with an additional ~150 WHP
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Your friend needs new tires or a driver mod, especially if that's just ~5 MPH over stock with an additional ~150 WHP
        He just put a meatier drag radial on it, but probably needs to go to a smaller rim. He has a lot of drag experience in many, many different and very, very fast cars. UG Twin Turbo Gallardo, Dodge Viper with twin 78mm turbos to name a couple.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        He just put a meatier drag radial on it, but probably needs to go to a smaller rim. He has a lot of drag experience in many, many different and very, very fast cars. UG Twin Turbo Gallardo, Dodge Viper with twin 78mm turbos to name a couple.
        Click here to enlarge Sounds like he's had a healthy variety of quality toys, hopefully he finds the right setup & get those trap speeds up
      1. Markyd83's Avatar
        Markyd83 -
        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