• BMS (Burger Tuning) hits new N54 stock turbo Dynojet dyno record with 461 rear wheel horsepower pull

      With all the discussions as of late regarding upgraded turbo options for N54 inline-6 twin turbo based vehicles the stock N54 turbos have not been getting a lot of love. Well, in comes BMS to remind us just how much power the stock turbos can make these days. The N54 has come a long way and BMS was able to squeeze out 461 rear wheel horsepower on a dynojet in STD correction. Also 510 pound-feet of rear wheel torque.


      Mod list for the car is as follows:

      B4 G5 ISO
      BMS back end flash -- "race" file
      BMS downpipes
      CPE intercooler
      CPE chargepipe w/ tial valve
      BMS DCI
      BMS OCC
      Spec clutch w/ steel single mass flywheel
      BMS 2.2g meth kit w/ 80% ethanol / 20% water, CM12 nozzle
      E40 fuel (40% E98, 60% pump 91 octane)
      "Option2" inline booster pump

      At the 20.5 PSI of boost on the turbos necessary to hit these peak figures it is doubtful the turbos would last long. This would likely need to be dialed back for any extended use as the turbos are simply being pushed past their limit. Still, nice to see just how much can be extracted from the N54 stock turbos.

      Nice work by BMS, graphs below.






      This article was originally published in forum thread: New stock turbo dyno record, 4/25/13 started by Terry@BMS View original post
      Comments 82 Comments
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by marv85 Click here to enlarge
        @Terry@BMS , looking at your timing, why didn't you go more aggressive in the midrange and up top?

        btw, looking at the BMS chargepipe I saw the meth bung very close to the TB. did you see gains by having that close? as in better than the elbow placement?
        The problem with advance is what you get during a single gear pull on the dyno often isn't what you get gear after gear doing real world runs. So while I could have inflated timing on the dyno for a few more HP I don't think it would do anything on the road. And may potentially cause issues. I've never found much benefit in running more than 12-13 degrees of advance with factory turbos unless you are on straight E85, in which case you need another degree or so just to offset the slower burn rate.

        I prefer the elbow nozzle placement but the BMS CP placement is also suitable. Next batch of BMS CP's will have the bung closer to the elbow though.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        No digs against BMS, but I personally agree that a stock baseline should be acknowledged (if not included in the dyno sheet) with all of these "Record Breaking HP" dyno graphs. Obviously if someone's churning out 450 WHP on a dyno that baselined at 300 WHP, it's not as impressive as a car that baselined at 270 WHP and spit out 440 WHP. Way too many people forget about the fact that it's all about the gains, especially (like you said) you can easily through the car on a high reading dyno/adjust the scaling and "magically" create the numbers you want.


        **PS -- Area Under the Graph > Peak HP/TQ Numbers
        The problem is, you can screw with baselines too. With a piggyback or flash tuning in place you can make the car generate only 6psi. Or run it low advance with too rich AFRs. So the baseline is maybe more corruptible than actual dynojet numbers IMHO. This dyno reads about average for dynojets. Maybe 5hp high. Here is a run we did a few days after this on a factory stock and then tuned 535 F10 N55. Disappointing numbers stock. Click here to enlarge http://www.n54tech.com/forums/showthread.php?t=19519
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by UsualSuspect Click here to enlarge
        I'm going to go to another dyno just to prove the non-believers! When? Soon, within the next few weeks.
        benzy89, did you see what he said to me above?
        Not doubting you. We've shown time and time again how easy it is to make 440rw+ on factory turbos. Just saying if you want comparable worthy numbers you need to use a dynojet. If it does 480rw on a dynojet I'll be the first to congratulate you. Just don't be surprised if it does 440rw. As that is what they normally do maxed out. Click here to enlarge
      1. marv85's Avatar
        marv85 -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        The problem with advance is what you get during a single gear pull on the dyno often isn't what you get gear after gear doing real world runs. So while I could have inflated timing on the dyno for a few more HP I don't think it would do anything on the road. And may potentially cause issues. I've never found much benefit in running more than 12-13 degrees of advance with factory turbos unless you are on straight E85, in which case you need another degree or so just to offset the slower burn rate.

        I prefer the elbow nozzle placement but the BMS CP placement is also suitable. Next batch of BMS CP's will have the bung closer to the elbow though.
        The batch coming in end of may? Because I'm looking to buy one so I'd wait if that is the case
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by marv85 Click here to enlarge
        The batch coming in end of may? Because I'm looking to buy one so I'd wait if that is the case
        Correct! We're out of stock so you'll have to wait until then if you want a BMS one. Click here to enlarge
      1. marv85's Avatar
        marv85 -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Correct! We're out of stock so you'll have to wait until then if you want a BMS one. Click here to enlarge
        I'll wait.but I need to make sure I get one from that batch, are you ordering a lot? or should I pre order lol, it's a matter of life or death Click here to enlarge
      1. Terry@BMS's Avatar
        Terry@BMS -
        We do batch runs of 100 on those. So, you should be fine with waiting until they come in.
      1. marv85's Avatar
        marv85 -
        awesome.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by UsualSuspect Click here to enlarge
        benzy89, did you see what he said to me above?
        Post #30?? Hahaha haters gonna hate, just gotta shut them up with another "independent" dyno run (which is ridic since you're a forum member & not a vendor). For any doubters, Usual's car is a BEAST -- On the way down to Bimmerfest last year, he was running a pump gas PROtune/stock turbos and was gunning down LM's supercharged M3 -- COBB FTW!
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        pump gas PROtune/stock turbos and was gunning down LM's supercharged M3 -- COBB FTW!
        uhh.. you sure about that..?
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        uhh.. you sure about that..?
        It was a lot closer when you 2 ran then it should've, especially on pump
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        uhh.. you sure about that..?

        video or it never happened
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by themyst Click here to enlarge
        video or it never happened
        Sadly I don't think there's any video of that particular run Click here to enlarge
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by themyst Click here to enlarge
        video or it never happened
        about 2 min mark, after camera was readjusted by pure awesomness- although, i dont recall the gap between cars ever stop growing

      1. Terry@BMS's Avatar
        Terry@BMS -
        I once pulled on a supercharged M3 with stock turbos like it was standing still. But, I was on race gas + meth. Click here to enlarge
      1. ezec63's Avatar
        ezec63 -
        Can we see a graph where the HP axis isnt so spread out so we can see that n54 stock turbo falling lol Peak numbers FTL
      1. Terry@BMS's Avatar
        Terry@BMS -
        Too lazy to reformat chart but this thing needs to be shifted around 6000rpm to maximize power under the curve with an MT.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        I once pulled on a supercharged M3 with stock turbos like it was standing still. But, I was on race gas + meth. Click here to enlarge
        I believe it
      1. themyst's Avatar
        themyst -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Too lazy to reformat chart but this thing needs to be shifted around 6000rpm to maximize power under the curve with an MT.

        shifted around 6000 RPM in the higher gears. youll land right at 5000 RPM by redlining 2nd. 3rd gear seems to be a bit taller than 4th and 5th. if equal 6MT and 6AT ran into 6th gear the 6MT will pull lovely due to the tall ass 6th in the 6AT.
      1. Terry@BMS's Avatar
        Terry@BMS -
        I don't drive the MT much but I think it's falling from 6100rpm down to 4500rpm on the 3->4, for example. I'll have to do some 60-130 testing when it cools down. Click here to enlarge