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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. DefactoM6's Avatar
        DefactoM6 -
        Click here to enlarge Originally Posted by GeorgiaTech335Coupe Click here to enlarge
        I'm going to have to disagree. Have you tried launching an MT 335 with a lot of power? It is very difficult. Especially without LSD. And this car loves to wheel hop. I've seen with my own eyes an AT pull a 1.7 60' on RFTs. I've seen a man who said it was his first time at the strip pull a 1.8 60' the very first try in an AT. I've seen dozens of MTs, and I've never seen anyone pull better than a 1.9, other than me (which is very few and far in between). Also, don't discount the final drive. MTs are crossing the finish line barely into 4th gear, ATs are well into 4th gear.

        Also, I'm pretty sure I am not putting down 650whp at the boost I'm running. I'd say more around 600whp. We will know soon enough as I plan on dynoing the car as well.
        Idk...my first outing at the strip ever, I was cutting 1.91s-1.94s on street tires...LM was there to see it. Open LSD, stock suspension and hoosiers, I cut 1.71-1.73s. This last time at the strip with suspension, bushings, LSD and hoosiers, I cut a few mid 1.6s before my clutch started slipping badly...LM and others were there to see it as well. The AT does have the advantage of not having the power delay on shifts that MTs do, and fewer shifts if one is starting in 2nd. ATs are also geared differently, which is why they finish well into 4th vs. MTs...it's the same reason why ATs doing 60-130s need 2 shifts (3-4-5), whereas the MT can get away with a single shift (3-4). Not to mention the fact that these transmissions just don't seem to like being shifted 1-2 with any urgency whatsoever.

        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        yes, right on the cusp, with 1.7 60's ET is all about traction and 60'. I think most bmw guys rely on the excuse of AT is faster, when in reality, its no different, especially with NLS. is it "easier" maybe, but in every other platform manual is the prefered and really only acceptable transmission. So everytime i hear someone blame bad ET on MT, well, its really the driver.

        You can argue preload, but again, when any other car can do it, it comes down to driver. This is COMPLETELY disregarding the added 200 hp.
        im curious what suspension anyone has specific for drag racing on their cars. as i know, noone does, would it help, sure, is it required? no, i was on eibach springs.

        To claim "too much power" to launch correctly is just absurd. prepped track, sticky tires, low tire psi...hell take a look at any street racing video. guys with MT, DR's and more power lay it down on the street, so its just excuses.
        again, bmw guys think there is some magical mystery in launching their cars..
        600+hp and cant crack 10's and 130+ to me, would be laughable.

        AAAAND.. this is actually lowering my expectations down from 135+mph traps _I_ would expect with 650rwhp in a 3700lb car..
        I agree...AT vs MT does come down entirely to driver ability. That said, ATs really do simplify things, and they certainly make for repeatable results, which is pretty key in drag racing as you know. Either way, I could care less if he runs 13s, as long as the trap speed is high.
      1. Expertrm's Avatar
        Expertrm -
        really wish I had a MT
      1. LostMarine's Avatar
        LostMarine -
        right, as i said, driver and excuses. not claiming to be the best as ive never owned a MT, and the one my brother picked up is awd, so i cant go out and "show" people how easy it is.. BUT, then again, you have EVERY OTHER CAR EVER DRAG RACED to show that 6MT is not an excuse, just because its claimed to be..

        hell, iirc, corvette MT's are notoriously hard to shift, and yet.. they boogie in the 1/4 mile.

        like i said, irrelevent if most FBO stock turbo MT cars can cut mid 11's with 400-440 hp, and a ST with 200-250 MORE hp can power down into the 10's.. i would be pissed..but hey, who am I to judge with, unless im mistaken, 2, maybe even 3 records. (TT N54 1/4 mi, non intercooled M3 1/4 mi, and N/A M3 60-130)
      1. DefactoM6's Avatar
        DefactoM6 -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        right, as i said, driver and excuses. not claiming to be the best as ive never owned a MT, and the one my brother picked up is awd, so i cant go out and "show" people how easy it is.. BUT, then again, you have EVERY OTHER CAR EVER DRAG RACED to show that 6MT is not an excuse, just because its claimed to be..

        hell, iirc, corvette MT's are notoriously hard to shift, and yet.. they boogie in the 1/4 mile.

        like i said, irrelevent if most FBO stock turbo MT cars can cut mid 11's with 400-440 hp, and a ST with 200-250 MORE hp can power down into the 10's.. i would be pissed..but hey, who am I to judge with, unless im mistaken, 2, maybe even 3 records. (TT N54 1/4 mi, non intercooled M3 1/4 mi, and N/A M3 60-130)
        Your next car needs to be a manual, go set records there Click here to enlarge. I am making no excuses for anything in regards to 6MT and launching..but then again, I've never had a problem getting good launches out of my car at the strip...my issues have always been elsewhere Click here to enlarge.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by DefactoM6 Click here to enlarge
        Your next car needs to be a manual, go set records there Click here to enlarge. I am making no excuses for anything in regards to 6MT and launching..but then again, I've never had a problem getting good launches out of my car at the strip...my issues have always been elsewhere Click here to enlarge.
        exactly, but apparently, your the exception Click here to enlarge
      1. maui86's Avatar
        maui86 -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        lol I pulled a few 1.85 in my 135 manual with no LSD..went 12.0@118 and 12.1@117 that day...

        than went back in a better DA but track prep was $#@! and i was 120mph but only 12.2 and couldn’t do better than a 2.0 60...

        I don’t think a lot of guys have been on a properly prepped track like we can get regularly at atco at our rentals (shoes stick like glue). That’s really all you need coupled with the right tire/driver. I agree that manuals are not inferior.. my red 135 6m whooped every AT tranny e92 car's ass I raced from a roll or dig around my area. Now my buddy Donny’s 6m 135i puts hurtings on every other e92 he runs too AT or MT because he can drive.. I really need to run him in my AT now that its tuned to the balls to see if I take him from a roll despite being the heavier car (and "superior AT) ... but i doubt it. He’s just g5 iso with a competent driver. If he ever went to the track I’m sure he would pull 1.8 60 or better.. He’s been racing his entire life and knows what to do... I do pretty much agree that there is a misconceptionand a lot of inexperienced 6m guys out there...

        Dzennos list was spot on but you really don't need all the things listed, but certainly could use them all.
        So you are saying that at properly prepped tracks, shoes are supposed to stick to the ground or be hard to pull up? If so then I'm being robbed at my track.

        last month I took my car to the track and watched a guy walk across both lanes to grab something off the track near the tree...In rubber slippers... Not a sign of them sticking to the floor. HAHA.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by maui86 Click here to enlarge
        So you are saying that at properly prepped tracks, shoes are supposed to stick to the ground or be hard to pull up? If so then I'm being robbed at my track.

        last month I took my car to the track and watched a guy walk across both lanes to grab something off the track near the tree...In rubber slippers... Not a sign of them sticking to the floor. HAHA.
        If your shoes stick it's a damn well prepped track. If they don't... well, it's a $#@!ty prepped track.
      1. maui86's Avatar
        maui86 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        If your shoes stick it's a damn well prepped track. If they don't... well, it's a $#@!ty prepped track.
        Then they waste our time, every time, because they run late "prepping" the track with a tractor that looks like it was jacked from the cane field dragging tires behind it. Then a guy walking behind it(in rubber slippers) making sure there aren't any screws or anything on the track. So instead of having 3hrs of T&T...We get 2. I need to experience this Atco track everyone raves about.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by maui86 Click here to enlarge
        Then they waste our time, every time, because they run late "prepping" the track with a tractor that looks like it was jacked from the cane field dragging tires behind it. Then a guy walking behind it(in rubber slippers) making sure there aren't any screws or anything on the track. So instead of having 3hrs of T&T...We get 2. I need to experience this Atco track everyone raves about.
        Agreed, they waste your time.
      1. 654's Avatar
        654 -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        right, as i said, driver and excuses. not claiming to be the best as ive never owned a MT, and the one my brother picked up is awd, so i cant go out and "show" people how easy it is.. BUT, then again, you have EVERY OTHER CAR EVER DRAG RACED to show that 6MT is not an excuse, just because its claimed to be..

        hell, iirc, corvette MT's are notoriously hard to shift, and yet.. they boogie in the 1/4 mile.

        like i said, irrelevent if most FBO stock turbo MT cars can cut mid 11's with 400-440 hp, and a ST with 200-250 MORE hp can power down into the 10's.. i would be pissed..but hey, who am I to judge with, unless im mistaken, 2, maybe even 3 records. (TT N54 1/4 mi, non intercooled M3 1/4 mi, and N/A M3 60-130)
        I agree in general in other platforms that MT well driven could be as fast, but looking at the N54 records at dragtimes.com either BMW drivers don't know how to drive, or N54 MT shifting has some bogs and lags compared to AT. What is the best ET for a 6MT car, if you ignore Shiv's car?
      1. DefactoM6's Avatar
        DefactoM6 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        If your shoes stick it's a damn well prepped track. If they don't... well, it's a $#@!ty prepped track.
        Yup. When I cut those mid 1.6s at atco, it felt like the pavement wanted to eat my shoes with every step I took to get my slips...
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by 654 Click here to enlarge
        I agree in general in other platforms that MT well driven could be as fast, but looking at the N54 records at dragtimes.com either BMW drivers don't know how to drive, or N54 MT shifting has some bogs and lags compared to AT. What is the best ET for a 6MT car, if you ignore Shiv's car?

        im not gonna search right right now, and dont know the past 2 years worth of data. BUT, I think a "decent" generalization is that most of the bmw crowd currently cant shift as well as they think they can, given the crowd/age/purpose/experience ..** general statement-take no offense, unless you fall into the category-and if you are offended, prove me wrong Click here to enlarge
      1. Q4P's Avatar
        Q4P -
        10's yet or continuous BS?
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by DefactoM6 Click here to enlarge
        Yup. When I cut those mid 1.6s at atco, it felt like the pavement wanted to eat my shoes with every step I took to get my slips...
        sounds like i'm coming down to Atco soon Click here to enlarge
      1. 654's Avatar
        654 -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        im not gonna search right right now, and dont know the past 2 years worth of data. BUT, I think a "decent" generalization is that most of the bmw crowd currently cant shift as well as they think they can, given the crowd/age/purpose/experience ..** general statement-take no offense, unless you fall into the category-and if you are offended, prove me wrong Click here to enlarge
        I agree but I believe there is more into it. Among 20 best times in dragtimes, only Shiv and Dzenno have MTs. Shiv has much more power than anyone else plus a high end suspension. Dzenno has RBs, full bolt-ons, race gas, meth...and still loses to the best stock turbo ATs. Third MT is Mr.5 in position 26...

        I believe keeping the boost up in the shifts is still the problem for MTs compared to the ATs that could be worth a couple of tenths and the lack of skill could be worth another couple of tenths in the results in general. This is just a guess and someone should go through the logs and VBOX data of comparative AT and (well driven) MT cars to know for sure if a very skilled driver would still suffer from some disadvantage of the MT transmission.
      1. Terry@BMS's Avatar
        Terry@BMS -
        The MTs are in a good position to dominate MPH and 60-130 times, but in terms of ET, so far have not been impressive. For example at the same track with similar quality drivers Shiv's customers AT car went 11.3 OEM turbos with 440whp. Shiv went 10.8 single turbo with 200whp+, more suspension, etc. Only a half second difference.
      1. JoshBoody's Avatar
        JoshBoody -
        Click here to enlarge Originally Posted by 654 Click here to enlarge
        I agree but I believe there is more into it. Among 20 best times in dragtimes, only Shiv and Dzenno have MTs. Shiv has much more power than anyone else plus a high end suspension. Dzenno has RBs, full bolt-ons, race gas, meth...and still loses to the best stock turbo ATs. Third MT is Mr.5 in position 26...

        I believe keeping the boost up in the shifts is still the problem for MTs compared to the ATs that could be worth a couple of tenths and the lack of skill could be worth another couple of tenths in the results in general. This is just a guess and someone should go through the logs and VBOX data of comparative AT and (well driven) MT cars to know for sure if a very skilled driver would still suffer from some disadvantage of the MT transmission.
        I agree keeping boost on MT is not so easy. I've riden with MT drivers before and them thinking they nailed a shift, but clearly did not. I think some need to feel a proper shift to understand what they are missing.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Feeling a proper shift is xxxy for sure but I bet not so much at 15psi Josh Click here to enlarge
      1. lulz_m3's Avatar
        lulz_m3 -
        After installing my WOTBox i can tell you that keeping boost between shifts is $#@!ing amazing. Throws you back into the seat. If only i had some AT 335i/135i around to race, but its lonely in Jacksonville lol. I might have to snag some vids of me racing my buddies 535, but thats not exactly a fair matchup.
      1. Laloosh's Avatar
        Laloosh -
        Put it this way, I have never officially drag raced anything BUT a manual transmission car, and the bmw manual tranmission flat out sucks. I was still able to crack low 12s and over 120 traps on stop turbos, however the shifting never felt right when pushed to its max. Over the course of 3 years I got some what use to it, untill I got my mustang and realized that I can slam the $#@! out of the shifter and chirp the 3-4 shift at over 100 mph in a bone stock car. I believe one of my first posts when my bmw was bone stock was how to fully turn off traction control (even though it was) becuase I was bogging a bone stock car from shifting to fast.

        As for launching a mt, theres alot more to getting a mt car downt he track then just launching, more then half the time I blow the tires on a good hard 1-2 shift instead of the initial hit....