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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. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by tmo335tt Click here to enlarge
        The relevance is that you claim to follow BMW racing when in reality you follow the $#@! that is talked about on here, that is more about guys having fun at a drag strip.
        HAhah what? Ya I don't follow BMW racing or anything. Are you high? Slow learner maybe?

        You bring up the name Joey Hand as if it's going to be hieroglyphics to me and you get an article written by me on exactly the person you are bringing up. I'm very impressed with your vast BMW racing knowledge.

        Maybe now instead of just trolling you can discuss these technical aspects to the fix people are waiting for. That, or maybe a few more non sequiturs from you.
      1. Q4P's Avatar
        Q4P -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge
        Umm are you talking about the drag strip ?

        yeah yeah yeah... u r a supposed exception. Except that autos and sticks have every 11 ever set w the N54.
      1. RnmEvo9's Avatar
        RnmEvo9 -
        I got to hand it to all of you bimmerboost members participating in this thread who have managed to make my day go by faster than usual with all the entertainment whether its misfire vs phantom misfire, dct vs mt, m3 vs 335, single vs stock, gtr vs bbq whatever, I know where I can tune in on a daily basis around the same time and get my fix. Click here to enlarge

        Going to spread the love to anyone who has posted thus far. Click here to enlarge

        Thanks again,
        Rnmevo
      1. BuraQ's Avatar
        BuraQ -
        Click here to enlarge Originally Posted by Q4P Click here to enlarge
        yeah yeah yeah... u r a supposed exception. Except that autos and sticks have every 11 ever set w the N54.

        Here is a timeslip of a DCT breaking 11s, not me, with just some coaching on launching the DCT. Kudos to Jake@PTF who tuned this car

        Click here to enlarge

        Source: http://www.bimmerboost.com/showthrea...obb-PRO-Tuning

        Here is my 335iS numbers. Kudos to Lenny@RENNtech (m54b52)


        Click here to enlarge


        Take a very good look at 12.000 @ 112 MPH . Didnt take much did it ? I am not even running cattless DPs, no DRs, No meth, AND the car 50 state legal . Source http://www.e90post.com/forums/showthread.php?t=773989

        These cars need drivers that know what they are doing with the DCT. These cars are far from being the worse or weakest as you stated. They just need a driver.
      1. ChuckD05's Avatar
        ChuckD05 -
        Click here to enlarge Originally Posted by Ak335i Click here to enlarge
        I can say from personal experience that the one i know (@BuraQ ) is maybe not the "fastest" in our area but right there as one of the quickest running an average 12.0 with very modest launches as of yet on street tires. J.S.
        just as a note it was said in this thread that the single turbo guy saw the track buraQ regularly goes to is .2-3 too fast compared to vboc and other track though... makes sense since bura goes 12.0 at what 113-4?

        edit - responded on last page.. BuraQ's post above confirms my theory, im willing to bet that his track reads a bit "quick" going 12.0 at only 112 with a high 1.8 ... a 1.6x would make more sense with that ET/MPH
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        just as a note it was said in this thread that the single turbo guy saw the track buraQ regularly goes to is .2-3 too fast compared to vboc and other track though... makes sense since bura goes 12.0 at what 113-4?

        edit - responded on last page.. BuraQ's post above confirms my theory, im willing to bet that his track reads a bit "quick" going 12.0 at only 112 with a high 1.8 ... a 1.6x would make more sense with that ET/MPH
        I cant explain Buraqs numbers.
        I trapped 116-117 with the same launches as him and 11.8 to 12.0 ETs at the same track. There is obviously a difference in the DCT (his) vs mine. He is faster somewhere on the track probably the first half. Doesnt mean the track reads quick. Maybe the track traps slow? It doesnt matter there will always be haters. PBIR is a IHRA sponsered track period.


        Oh yea i forgot, because the single turbo tried and failed at PBIR, its the tracks fault LMAO
        And because my E90 does so well there with good launches 1.76-1.80 running 11.8-12.0 @ 116-117mph, my car is actually weak and slow and the track is lying LOL
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        edit - responded on last page.. BuraQ's post above confirms my theory, im willing to bet that his track reads a bit "quick" going 12.0 at only 112 with a high 1.8 ... a 1.6x would make more sense with that ET/MPH
        This video should explain it to you.
        Bura avgs 12.0 at 112-115 I avg 11.8-12.0 at 116-117 on the same nights at the same track.
        In this video me and Buraq do some rolls. The first is a 60 roll i think and you can see i pull away consistently at higher speeds.
        The next two are lower speed rolls 40ish mph i think. You can see the DCT has the clear advantage down low, it takes me until we get to speed for me to make up the ground and pull.

        Obviously Bura pulls aroud the same ET as me with less trap because he his faster down low. The DCT kills me in slow rolls down low and thats the difference in the AUto vs DCT and the reason for the drag slip discrepancies.

      1. BuraQ's Avatar
        BuraQ -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        ....edit - responded on last page.. BuraQ's post above confirms my theory, im willing to bet that his track reads a bit "quick" going 12.0 at only 112 with a high 1.8 ... a 1.6x would make more sense with that ET/MPH
        Its the DCT....PBIR is a IHRA track, its not a hole in the wall or ghetto track. More people have complained about this track being a slow track on the contrary compared to other tracks. You cannot go by one persons findings and consider it a fundamental authority especially when their is a consensus about this track
      1. zerep1's Avatar
        zerep1 -
        The dct can pick up .3-.5 seconds down the track nuff said
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by Ak335i Click here to enlarge
        I cant explain Buraqs numbers.
        I trapped 116-117 with the same launches as him and 11.8 to 12.0 ETs at the same track. There is obviously a difference in the DCT (his) vs mine. He is faster somewhere on the track probably the first half. Doesnt mean the track reads quick. Maybe the track traps slow? It doesnt matter there will always be haters. PBIR is a IHRA sponsered track period.


        Oh yea i forgot, because the single turbo tried and failed at PBIR, its the tracks fault LMAO
        And because my E90 does so well there with good launches 1.76-1.80 running 11.8-12.0 @ 116-117mph, my car is actually weak and slow and the track is lying LOL
        Tried and failed? C'mon. You very well knew I was going to the track and I made it completely known that I was going to have to short shift at the track to avoid a misfire. How is that trying and failing?

        I have well over 400 passes in the 335 and the last half of those have been VBox'd at all the tracks I go to. The Friday night before I went to PBIR on Sunday, my VBOX was reading an ET almost exactly the same as my time slips at OSW. This has been the case on every pass. At Bradenton, my VBox would read almost exactly the same as my slip. At PBIR on that particular day, my VBOX was reading around 0.2-0.4s slower than my time slip. Logic would say that the timing blocks might have not been set up correctly. It is pretty standard that VBox ETs are almost always identical to the time slip, while MPH will be 1-2mph faster. Ask anyone who uses one at the strip. I also suspect that the trap speeds were on the low side as well, but that was harder to determine. VBox showed 2 mph faster, which is a little more than I usually see.

        It might have only been that day, I can't say for certain about other days. But I know, for a fact, the track was giving quicker ETs than were being ran on that day.
      1. Terry@BMS's Avatar
        Terry@BMS -
        GeorgiaTech how long before you can use Trevor's fix to see what the beast can really put down? Click here to enlarge
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        GeorgiaTech how long before you can use Trevor's fix to see what the beast can really put down? Click here to enlarge
        Have to wait on some parts. So probably a week, unfortunately.
      1. Terry@BMS's Avatar
        Terry@BMS -
        That isn't too bad! At least you have a track down there. I've been waiting for month to go race my 135. Famoso prob won't be open until late March and by then DA will be 2500'. Click here to enlarge
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        That isn't too bad! At least you have a track down there. I've been waiting for month to go race my 135. Famoso prob won't be open until late March and by then DA will be 2500'. Click here to enlarge
        The track is supposedly closing down for good. I hope someone takes over the lease and reopens it (15 min away from where I live). Last rental is 12/30, which is private and I am going to do. After that, it's a 2 hour drive to Bradenton, 2 hr to Gainesville or 2.5 hour drive to PBIR.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Famoso is also a 2hr drive give or take. Same boat. Seems its not profitable to run race tracks these days. Click here to enlarge
      1. ChuckD05's Avatar
        ChuckD05 -
        videos do show what you said... im just going off what georgia tech said... he was quicker at the other track which was consistant with his vbox
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        Tried and failed? C'mon. You very well knew I was going to the track and I made it completely known that I was going to have to short shift at the track to avoid a misfire. How is that trying and failing?
        That wasnt a shot at you. I apologize as it came off that way. I was trying to show with proof the difference in trap speeds and ETs with similar cars at PBIR. You can clearly see in the video that a slower trapping car can match the ET of a faster trapping car by being faster down low. It goes to show that there is no proof that PBIR reads wrong. And IMHO you cant make any determination of PBIR based off of OSW or VBOX until your car is running well. With your short shifting and missfires, there is not way to have a "control" in the experiment.

        I want your car fixed and running well trust me.
      1. ChuckD05's Avatar
        ChuckD05 -
        his low end also has something to do with his gearing
      1. GeorgiaTech335Coupe's Avatar
        GeorgiaTech335Coupe -
        Possibly, but I honestly doubt it. Take a look at the 2 slips I posted. One from OsW and one from PBIR, a few days apart. 60' is less than 1/10th s difference, I trapped higher at OSW, yet OSW read 0.25s slower ET. Neither of those runs had a misfire. Shift points may not be exact, but were fairly close.

        The evidence might not be conclusive, but I think it lends towards my opinion.
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        his low end also has something to go with his gearing
        that is correct and he is able to effectively launch in 1rst gr where i cannot yet