• PAW Motorsport offers N54 ported/polished cylinder head upgrade - $3995

      PAW Motorsport is offering a cylinder head upgrade for N54 based BMW vehicles. There is a substantial gain in port flow velocity without a sacrifice in low lift situations. Flowbench charts show an increase of about 35% with gains from 161 cfm to 227 cfm. Both intake and exhaust ports have been ported and polished along with modified intake and exhaust valves. The claimed power gains with the head alone are in the 40 hp range. Charts and pictures are below.

      Expect before and after results on a PAW DCT N54 project car in the next few weeks. For those interested in this upgrade there is a core charge in the $2800 range which obviously is refunded when the core is received.














      Further Details:








      Charts and Data:







      This article was originally published in forum thread: PAW offers N54 ported cylinder head upgrade - $3995 started by Sticky View original post
      Comments 325 Comments
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        Very impressive. What Im curious about is the pricing..is this like a stage 1 setup? Or is this the only package they have available?

        Was there no need to do any unshrouding around the valves in the combustion chamber area?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
        Very impressive. What Im curious about is the pricing..is this like a stage 1 setup? Or is this the only package they have available?

        Was there no need to do any unshrouding around the valves in the combustion chamber area?
        These are questions PAW will have to answer.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        I have yet to see any of this info pop up on the other forum. I like seeing it here. Straight and to the point, not a bunch of stupid $#@!ing questions about group buys that they will never participate in, not believing the hp gain, too expensive, etc etc.


        Too bad Dans car is no longer around for me to test one of these out on Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
        I have yet to see any of this info pop up on the other forum. I like seeing it here. Straight and to the point, not a bunch of stupid $#@!ing questions about group buys that they will never participate in, not believing the hp gain, too expensive, etc etc.
        We have a good amount of info not available anywhere else and that will only continue to grow, you have to come here to see it.

        PAW is going to use this upgrade on a car also getting the RB's, can't wait to see the final result.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        beyond 20psi this head is going to be key. Still have those stupid hydroformed exhaust manifolds though.
      1. fundahl's Avatar
        fundahl -
        So if you were at 20psi instead of 28"WC, would the % cfm increase over stock be around the same or would it differ greatly?
      1. 654's Avatar
        654 -
        Matt, I don't see a problem with the exhaust manifold. The strong point is that it is compact not wasting energy outside and stii probably flows what is needed.

        Yes. It's not tubular & equal length but I still like the design since it could be a lot worse and it needs to fit in the tight place. I don't think we can enhance it in any way.
      1. 654's Avatar
        654 -
        Very nice results. This flows way better than stock!
      1. mazdaspeed6's Avatar
        mazdaspeed6 -
        Click here to enlarge Originally Posted by Matt@Camber-Toe Click here to enlarge
        I have yet to see any of this info pop up on the other forum. I like seeing it here. Straight and to the point, not a bunch of stupid $#@!ing questions about group buys that they will never participate in, not believing the hp gain, too expensive, etc etc.


        Too bad Dans car is no longer around for me to test one of these out on Click here to enlarge
        Hey matt if your looking for a tester I'm only an hr and a half away Click here to enlarge
      1. carcars's Avatar
        carcars -
        Click here to enlargeClick here to enlargeClick here to enlarge
      1. enrita's Avatar
        enrita -
        good to see the biggest restriction as my shop stated was in the intake :-)
      1. mazdaspeed6's Avatar
        mazdaspeed6 -
        Let me get this right it's 3995 then when you send in your head it's 2800? Or 3995+ 2800 core charge/ refundable.. The second one sounds more like it
      1. DBFIU's Avatar
        DBFIU -
        Click here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlarge
      1. fast4door's Avatar
        fast4door -
        nice, and theyre local too..always makes it beeter Click here to enlarge
      1. 654's Avatar
        654 -
        Click here to enlarge Originally Posted by enrita Click here to enlarge
        good to see the biggest restriction as my shop stated was in the intake :-)
        We don't have data on which one is a bigger restriction. However, PAW seems to believe exhaust side was so restrictive that it needed upgraded valves, whereas your shop did not upgrade the exhaust valves. To me it seems that the exhaust side is still restrictive even after upgrading the exhaust valves. However to be sure, we would need to have two heads with different porting strategies regarding intake/exhaust port flows and compare the results in dyno or standing mile.
      1. DBFIU's Avatar
        DBFIU -
        Holy $#@! they are in miami! Nice..
      1. 654's Avatar
        654 -
        Conveniently at the airport Click here to enlarge
      1. SSDD's Avatar
        SSDD -
        Just for curiosity's sake Matt, about how much would we be talking in labor to have this done?
      1. 654's Avatar
        654 -
        +1. Any idea?
      1. DBFIU's Avatar
        DBFIU -
        All the good $#@! is coming out in south florida, hahaha it's so good to be in Zimbabwe.