• Rob Beck N54 turbo upgrade dyno numbers on pump gas - 412 whp

      Mazdaspeed6 had his RB turbo upgrade on his 335 dyno'd and here on the results on 93 octane. Supporting mods are cp-e exhaust, raceland dp's, ams fmic, cp-e chargepipe, bms dci, and a JB4. In his words:

      Hey guys, I just got the drf files in.. Heres the story, I ran 100 percent meth a few months ago and killed my flow sensor so I am waiting for a new one. So we had a dyno session set up this morning and terry and i decided to just do a few pulls on 93 pump, so i did... here was my best of 5 or 6 pulls i did... THIS IS MAP 2 14.5 PSI, no special map, no special tuning at all... Im happy with the numbers for 3 week old 93 pump and off the shelf map 2.. Big Thanks to terry, encinitas, rob beck, and george at ics..

      This article was originally published in forum thread: RB Pump Gas Runs started by mazdaspeed6 View original post
      Comments 28 Comments
      1. carcars's Avatar
        carcars -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        that was an old log with jb3 i believe. not the jb4 and Rb's
        know friend

        but that small bump between 3800 and 4400 rpm is the same in the rb turbos in the same way that the JB3

        you not to notice??
      1. DBFIU's Avatar
        DBFIU -
        Click here to enlarge Originally Posted by carcars Click here to enlarge
        know friend

        but that small bump between 3800 and 4400 rpm is the same in the rb turbos in the same way that the JB3

        you not to notice??
        Thats the "Vanos Bump" that shows up on practically every car.
      1. carcars's Avatar
        carcars -
        Click here to enlarge Originally Posted by DBFIU Click here to enlarge
        Thats the "Vanos Bump" that shows up on practically every car.
        "Vanos Bump" but it is more common in atmospheric car no?
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by carcars Click here to enlarge
        know friend

        but that small bump between 3800 and 4400 rpm is the same in the rb turbos in the same way that the JB3

        you not to notice??

        in this? http://www.bimmerboost.com/attachmen...6&d=1297905856

        no, i dont see what bump you referring to. i do see that power increases then. probably because that is about the point in which boost starts to get more aggressive. I do not however see any vanos bump
      1. Blaizon's Avatar
        Blaizon -
        What do you guys forsee a RB car making on 93 pump only @ say 16psi? Is that even doable?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Blaizon Click here to enlarge
        What do you guys forsee a RB car making on 93 pump only @ say 16psi? Is that even doable?
        16 on 93? Without meth?

        Doable... sure.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Weather plays a big role. Remember the JB4 target is independent of ambient temperature and pressure. So on a cold day like this dyno 14.5psi may be the same power as say 16.5psi on a warmer day. Based on data I've seen so far from large turbo dynos, and we've done a few now, I think around 400rw on 93 @ 15psi is going to be the "average". You can crank it up to around 16psi with an ign drop out here and there with the OEM setpoints, or if you have an advance limiter you can probably run say 17psi with a 2 degree offset, but power will wind up around the same range either way.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Blaizon Click here to enlarge
        Solid numbers @ only 14.5psi!...
        YES they are!

        Click here to enlarge Originally Posted by DBFIU Click here to enlarge
        Not bad for low boost. Turn it up to 20 psi with meth Click here to enlarge
        might wanna wait on that Click here to enlarge