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    • A visit with CP-E at SEMA - Pictures of prototype N54 twin turbo upgrade

      BimmerBoost stopped by the CP-E (Custom Performance Engineering) booth at SEMA 2011. What immediately caught our attention was the N54 twin turbo upgrade prototype they had on display. We asked a lot of questions but did not really get any concrete answers. Basically, this is going to go on their shop car. There will be two different turbo options the smaller of which should bolt in and the larger turbos requiring permanent modification to the engine bay / chassis to make them fit. Do not expect these until Summer next year although they were talking maybe even Spring.

      How about the tuning? Well, the Standback was suggested for it. As far as fuel to support 700+ horsepower goals there were not really any answers but secondary injection was suggested along with a new HPFP (high pressure fuel pump). We know everyone is going to be following this closely to see what comes of it and we wish CP-E the best with this project which is obviously at very early stages.

      The entire product offering is pictured and pictures were taken of all the CP-E BMW products that were on display. This includes the N54 blow off valve kit, N54 downpipes, dual cone intake, N54 FMIC, N55 downpipe, and their 1M exhaust.





























      This article was originally published in forum thread: A visit with CP-E at SEMA - Pictures of prototype N54 twin turbo upgrade started by Sticky View original post
      Comments 93 Comments
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by joshj84 Click here to enlarge
        I thought the stock downpipe is 5"?
        Is it?
      1. lamia2super's Avatar
        lamia2super -
        ill believe when i see it. that exhuast is kinda cool if it was made for our cars
      1. Yukohama's Avatar
        Yukohama -
        lets hope they pull through!
      1. joshj84's Avatar
        joshj84 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Is it?
        pretty sure
      1. carcars's Avatar
        carcars -
        which way to tease everyone

        you will really all this false propaganda cren ...Click here to enlarge
      1. Rob@RBTurbo's Avatar
        Rob@RBTurbo -
        I love the CP-e stuff myself. Huge proponent. All top notch work.

        Regarding these turbos though, looks like lots of work left to do. It appears their primary runners are very (unnecessarily) large? Any measurements on those (2")?

        As you can see by the pics, it's going to be tight. Not sure how they propose to get a smoothly transitioned induction tube on that compressor inlet with a downpipe that needs to fill the same area dropping out of the front turbo. Surely they plan on flipping the rear around so that both turbines drop down together as they do stock. Re-worked Induction Tubes and Downpipes will obviously be required, that rear induction tube will likely cause rear firewall/chassis fab work requirements.

        Don't see any internal wastegates on them, nor provisions for external wastegates on the manifolds either.

        I know most would love to equal length primaries as it appears CP-e is doing, but IMO don't think there is near enough benefit over the increase of production/final costs and installation challenges they will generate.

        Overall something tells me this is really just showing what they've done on the exhaust manifolds thus far, once they get it all ironed out will be an amazing setup for sure- it simply will just cost alot of coin not only in product but in installation.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by joshj84 Click here to enlarge
        pretty sure
        If so then post 20 doesn't look too good...
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Rob@RBTurbo Click here to enlarge
        I love the CP-e stuff myself. Huge proponent. All top notch work.

        Regarding these turbos though, looks like lots of work left to do. It appears their primary runners are very (unnecessarily) large? Any measurements on those (2")?

        As you can see by the pics, it's going to be tight. Not sure how they propose to get a smoothly transitioned induction tube on that compressor inlet with a downpipe that needs to fill the same area dropping out of the front turbo. Surely they plan on flipping the rear around so that both turbines drop down together as they do stock. Re-worked Induction Tubes and Downpipes will obviously be required, that rear induction tube will likely cause rear firewall/chassis fab work requirements.

        Don't see any internal wastegates on them, nor provisions for external wastegates on the manifolds either.

        I know most would love to equal length primaries as it appears CP-e is doing, but IMO don't think there is near enough benefit over the increase of production/final costs and installation challenges they will generate.

        Overall something tells me this is really just showing what they've done on the exhaust manifolds thus far, once they get it all ironed out will be an amazing setup for sure- it simply will just cost alot of coin not only in product but in installation.
        Great post and I would venture to guess you are correct here. It's early but at least they are telling us what they are doing and planning to do.
      1. alpinedevil335's Avatar
        alpinedevil335 -
        I was also expecting to see MORE, kindda dissapointed.
        Really hope this project comes through.
      1. Brey335i's Avatar
        Brey335i -
        RB, if I could rep you I would. It's refreshing to see a businessman actually speak well of his competition.

        If CP-E do bring these turbos to market, I would say they should provide a nice gain over the current reworked turbos, but I suspect most people will still go with units like the RB's which fit right in. But it's nice to have a more extensive setup for those looking to push further.
      1. n54BoostOnCoke's Avatar
        n54BoostOnCoke -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        If so then post 20 doesn't look too good...
        Bro, there's no reason for a 5" downpipe, the reason why the stock downpipe is so huge because of the HUGE As$ catalytic requiered for emissions, 3.5 diameter is more than enough, even 3 would've been fine imo
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
        Bro, there's no reason for a 5" downpipe, the reason why the stock downpipe is so huge because of the HUGE As$ catalytic requiered for emissions, 3.5 diameter is more than enough, even 3 would've been fine imo
        I think you make a good point but why not the 5 inch especially with a tune?
      1. n54BoostOnCoke's Avatar
        n54BoostOnCoke -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I think you make a good point but why not the 5 inch especially with a tune?
        There's a dyno and they barely made 5whp on this DP, I think 5 inch was just really easy to make because they didn't have to do r&d and just copied stock unit imo, not hating on cp-e but I don't get the point either, 5 inch is too much, when was the last time you've seen any supra with 5 inch piping ? Huge trucks Peterbilts and $#@! use 5 inch piping lol
      1. LostMarine's Avatar
        LostMarine -
        as long as it doesnt hurt, and keeps price down, i dont see an issue with it.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
        There's a dyno and they barely made 5whp on this DP, I think 5 inch was just really easy to make because they didn't have to do r&d and just copied stock unit imo, not hating on cp-e but I don't get the point either, 5 inch is too much, when was the last time you've seen any supra with 5 inch piping ? Huge trucks Peterbilts and $#@! use 5 inch piping lol
        I think CP-E and AR Design both do the 5 inch but BMS offers a smaller option. Would be interesting to compare them.
      1. n54BoostOnCoke's Avatar
        n54BoostOnCoke -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I think CP-E and AR Design both do the 5 inch but BMS offers a smaller option. Would be interesting to compare them.
        Ar is 4
      1. joshj84's Avatar
        joshj84 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        If so then post 20 doesn't look too good...
        http://www.e90post.com/forums/showthread.php?t=595180

        Click here to enlarge
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
        There's a dyno and they barely made 5whp on this DP, I think 5 inch was just really easy to make because they didn't have to do r&d and just copied stock unit imo, not hating on cp-e but I don't get the point either, 5 inch is too much, when was the last time you've seen any supra with 5 inch piping ? Huge trucks Peterbilts and $#@! use 5 inch piping lol
        I'm happy with our 3.5" and hold the N55 world record with it. Click here to enlarge But the AR downpipe works and looks great and I like the idea of a 5" cast setup also. Allows you to slide a 5" high flow cat (similar to OEM diameter) in easily. Using cast ends retains heat better, reduces noise, and means every piece is exactly the same as the last one.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
        Ar is 4
        Thank you.
      1. Sticky's Avatar
        Sticky -
        Downpipe appears to have made a decent difference.