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    • HPF (Horsepower Freaks) BMW N54 single turbo manifold pictures and details

      We are finishing up the turbo manifold right now. The pictures below were taken a week ago. The head flange is quite complicated with how the turbo manifold seals to the head, but it is also quite ingenious. There are two ports leaving the collector to the wastegate which is a Tial 44mm VBand to ensure boost control is easily maintained. This turbo manifold fits all Precision T4 Performance turbos from a 67 to a 76. We will sell them separately for those that want to build their own custom turbo kit, but will also sell all the hardware to complete the turbo system.















      This article was originally published in forum thread: HPF Exhaust Mani Pics/Discussion started by oddjob2021 View original post
      Comments 45 Comments
      1. Sticky's Avatar
        Sticky -
        Where the hell did the Shiv tuning BS start from anyway? Ugh.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by HPFBranden Click here to enlarge
        Hey Guys, not sure where you guys are getting the idea that we've had Shiv out here...but we haven't. Tuning is still up in the air, and to my knowledge we don't have any plans to "bring anyone in". Our team is more than capable of getting this car dialed in.
        Thank you for clearing that up.
      1. Sticky's Avatar
        Sticky -
        I don't really get some of the hate on this manifold. I guess the vast amount of N54 single turbo options forces people to have unrealistically high standards.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        Fueling?
        Good question as well.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        HPF, respect to you for doing this, you have a potential customer here Click here to enlarge
      1. Irishace's Avatar
        Irishace -
        Click here to enlarge Originally Posted by dzenno Click here to enlarge
        HPF, respect to you for doing this, you have a potential customer here Click here to enlarge
        Here too, I admit I was a skeptic but I am starting to move into the category of believer. Subscribed.
      1. Sorena's Avatar
        Sorena -
        Click here to enlarge Originally Posted by Irishace Click here to enlarge
        Here too, I admit I was a skeptic but I am starting to move into the category of believer.
        Attachment 10483
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by folgrz Click here to enlarge
        I think a Precision billet dual BB 5857 turbo would fit the bill very nicely Click here to enlarge
        5857? thats a tiny turbo for an I6, they have a starting kit for my cobalt with the 5857 haha. you mean 6765?

        or maybe I'm getting EFR and Precision mixed up hahaha
      1. folgrz's Avatar
        folgrz -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        5857? thats a tiny turbo for an I6, they have a starting kit for my cobalt with the 5857 haha. you mean 6765?

        or maybe I'm getting EFR and Precision mixed up hahaha
        Lol for some reason I just love that turbo. My buddy put 2 of them in his GTR and they are the sickest things in the world. Plus they're good for about 550hp each with sick spool up time
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by folgrz Click here to enlarge
        Lol for some reason I just love that turbo. My buddy put 2 of them in his GTR and they are the sickest things in the world. Plus they're good for about 550hp each with sick spool up time
        Yea quick spooling turbos, I cant imagine twin 5857 on a GTR insane!
      1. carcars's Avatar
        carcars -
        Click here to enlarge Originally Posted by 654 Click here to enlarge
        The manifold of Unfor alias ScrotieMcBoogerBalls looked better.The problem has been that right people with real talent haven't been tuning for the hardware upgrades. N54 would be best to leave alone with twins - upgraded or not - and N55 with big single, because staying with the original configuration - N54=twins; N55=single; avoids part of the trouble.
        Click here to enlargeClick here to enlargeClick here to enlarge
      1. lamia2super's Avatar
        lamia2super -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Where the hell did the Shiv tuning BS start from anyway? Ugh.
        freaking LM and his sources lol
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by lamia2super Click here to enlarge
        freaking LM and his sources lol
        Attack mode 24/7 lol. I saw those rumors earlier but it should be clear to everyone HPF is handling this in house.
      1. lamia2super's Avatar
        lamia2super -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Attack mode 24/7 lol. I saw those rumors earlier but it should be clear to everyone HPF is handling this in house.
        always on the offensive! Lol
      1. LostMarine's Avatar
        LostMarine -
        hey, thats what shiv was tellin people, so i figured id throw it out there..
      1. black bnr32's Avatar
        black bnr32 -
        no tuning or fueling solution = putting the horse before the carriage
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by black bnr32 Click here to enlarge
        no tuning or fueling solution = putting the horse before the carriage
        There really isn't any clear fueling limitation at the moment and there are definitely tuning "options"
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by dzenno Click here to enlarge
        There really isn't any clear fueling limitation at the moment and there are definitely tuning "options"
        What are you talking about? There are major fueling hurdles.
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Take a look at the 60-130 thread I posted...at 19-20psi and RB turbos I've got no fuel limits at all...difference is my AFR targets are flashed instead of controlled via the standard piggy approach
      1. leo985i's Avatar
        leo985i -
        Then when are you gonna turn up the boost even more?