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    • Vargas Stage III Turbo upgrade for 335/135 N54 motor hits 572 wheel horsepower on 91 octane pump gas (no meth injection) with Cobb flash

      Well here are some results for the Vargas Stage III upgrade that has caused the N54 forum section to basically be engaged in chaos for the past few months. From accusations of vaporware, to comparison to single turbo upgrades, to countless other arguments the day has come and the Stage III Vargas Turbo upgrade dyno'd on 91 octane with no meth 572 horsepower to the rear wheels. This is with a Cobb flash tuned by BimmerBoost vendor Pro-Tuning Freaks.


      Impressive? Yep, sure is and this seems to also be a 91 octane pump gas only world record for the N54. Now keep in mind this is just the beginning. What will it do with meth? What will do on E85? What will it do with race gas and big boost? What about different turbos? Sky appears to be the limit but for now this kind of performance on pump gas sure is a big boost (hah, get it?) to the N54 scene.

      Congratulations to all involved, Vargas Turbo Tech, Pro-Tuning Freaks, Cobb, and just the N54 community as well. The impossible just became possible. Pictures, video, and dynograph below.



      This article was originally published in forum thread: 572WHP 537WTQ - ACN 91 Octane, no meth - VTT Stage 3 Early Dynos PTF / COBB Protune started by VargasTurboTech View original post
      Comments 575 Comments
      1. blisstik's Avatar
        blisstik -
        Here's an UNOFFICIAL overlay of ST 58 on 93 pump, no meth @ 19.5 PSI vs the VTT S3 on 91 pump @ 24 PSI. The gray line is the ST. I apologize if this is a misrepresentation in any way. I was just trying to figure out how it would daily drive.

        Question: On the VTT graph, what is that dip between 4.75 and 5.00? I see it on other dynos with stock turbos as well.

        Attachment 27932
      1. funkmobster's Avatar
        funkmobster -
        Click here to enlarge Originally Posted by blisstik Click here to enlarge
        Here's an UNOFFICIAL overlay of ST 58 on 93 pump, no meth @ 19.5 PSI vs the VTT S3 on 91 pump @ 24 PSI. The gray line is the ST. I apologize if this is a misrepresentation in any way. I was just trying to figure out how it would daily drive.

        Attachment 27932
        Looks very similar to me down low, just 4 psi difference up top.
      1. JoshBoody's Avatar
        JoshBoody -
        Great first dyno session. If you are not dropping LP, then it's the HPFP. Line size or inlet to the pump won't make a difference... need to increase output volume.
      1. Tony@VargasTurboTech's Avatar
        Tony@VargasTurboTech -
        Click here to enlarge Originally Posted by blisstik Click here to enlarge
        Here's an UNOFFICIAL overlay of ST 58 on 93 pump, no meth @ 19.5 PSI vs the VTT S3 on 91 pump @ 24 PSI. The gray line is the ST. I apologize if this is a misrepresentation in any way. I was just trying to figure out how it would daily drive.

        Question: On the VTT graph, what is that dip between 4.75 and 5.00? I see it on other dynos with stock turbos as well.

        Attachment 27932
        Not a misrepresentation at all, thank you for posting that. Pretty much speaks for itself. We used less octane, achieved similar spool to their small turbo that maxes at at 620-640. Our turbos are flow rated to about 850, yet they keep up with it down low and run away from it 4250 up on TQ and HP. The dip was explained in the original post. Small throttle correction that is easily tuned out, limited time on dyno we left it.
      1. Autobahn335i's Avatar
        Autobahn335i -
        Amazing!! Would probably blow my 6AT into oblivion though lol
      1. AltecBX's Avatar
        AltecBX -
        Has anyone looked at the rail pressure or pressure valve that returns the fuel? Why is the HPFP always to blame. Most of the job is being done by the LPFP as the HPFP job is to keep the rail pressure high. Could there be anything else other than the HPFP regarding the high pressure in the rails?
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by AltecBX Click here to enlarge
        Has anyone looked at the rail pressure or pressure valve that returns the fuel? Why is the HPFP always to blame. Most of the job is being done by the LPFP as the HPFP job is to keep the rail pressure high. Could there be anything else other than the HPFP regarding the high pressure in the rails?
        According to the data, the HPFP is to blame (the twin LPFP that Tony is running are maintaing pressure 100% fine), but that def doesn't mean that the HPFP is "tapped out". I know that when I had my Walbro installed, Garth (Undercover) was surprised to see the narrow sized tubing that the 335 fuel lines are & believes that be increasing the tubing diameter, we could eliminate a potential bottleneck & get the HPFP some more fuel.
      1. Eric335's Avatar
        Eric335 -
        Great work Dzenno and Tony. Cant wait for E90SoFlo to get a kit so i can try it out haha
      1. DallasBoosted's Avatar
        DallasBoosted -
        Amazing work. I get that tingling feeling when I read how straightforward the tuning was. /props
      1. ChrisN54's Avatar
        ChrisN54 -
        This + 1M with built DCT. That would be epic.
      1. AWil335i's Avatar
        AWil335i -
        If you're ready to try on an AT car, i'm fully prepared to blow my transmission for the good of the community Click here to enlarge
      1. Forcefed's Avatar
        Forcefed -
        Vishnu can go suck a fat one now
      1. Turkeybaster115's Avatar
        Turkeybaster115 -
        Click here to enlarge Originally Posted by klipseracer Click here to enlarge
        This is better than I was expecting. Lets see it crack 600 on 91!!!! I don't get 93 here unfortunately.
        Octane booster! Click here to enlarge
      1. The Ghost's Avatar
        The Ghost -
        What's next? Meth/e85 I hope.

        I prefer e85, but if you are fuel-limited, for now just run meth so everyone know what the kit can do. Show the real gap between RBs/VS2s.
      1. jpsimon's Avatar
        jpsimon -
        Click here to enlarge Originally Posted by Forcefed Click here to enlarge
        Vishnu can go suck a fat one now
        very mature!
      1. Sered's Avatar
        Sered -
        Incredible Tony, just F-ing incredible. GREAT JOB to both you, DZ, and everyone else that helped. Seriously man

        Click here to enlarge
      1. Turkeybaster115's Avatar
        Turkeybaster115 -
        Click here to enlarge Originally Posted by wtfmateim65 Click here to enlarge
        15k or less for a used N54 car
        FBO thru the classifieds for around 2k
        LSD, SMFW, Clutch 3-4k
        M3 bits and suspension 2-3k
        lets say a wide 5-10k for turbos and misc.
        extra few k for maintenance.
        M3 eater for 30-35k!
        Since it's a used N54, if it is an 07, you have a bolted diff. LSD upgrade= $1,700 w/labor.
      1. jpsimon's Avatar
        jpsimon -
        so when is the next dyno session?
      1. Flinchy's Avatar
        Flinchy -
        Click here to enlarge Originally Posted by AltecBX Click here to enlarge
        Has anyone looked at the rail pressure or pressure valve that returns the fuel? Why is the HPFP always to blame. Most of the job is being done by the LPFP as the HPFP job is to keep the rail pressure high. Could there be anything else other than the HPFP regarding the high pressure in the rails?
        Returnless system

        as said, the next easy thing would be some higher dia lines to ease it up a bit

        but there's only a certain amount of fuel you can force through it..
      1. Flinchy's Avatar
        Flinchy -
        Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
        Since it's a used N54, if it is an 07, you have a bolted diff. LSD upgrade= $1,700 w/labor.
        I feel like getting it out there: why not just go to a wrecker, get a full new bolted diff for a few hundred, install LSD, swap whole thing?

        even with the say $500 cost of the diff (i dunno, could be higher? Shouldn't be.) it would be $1000+ savings..?