• BMS E82 135i FFTEC N54 Single Turbo Kit Dyno Testing - 585 wheel horsepower

      Been racking up miles on the 135i and fixing little things. And finally had a chance to get to the dyno today for some baseline testing. As I've mentioned I've been VERY pleased with the FFTEC twin scroll top mount 5862 turbocharger kit. On road performance and spool is much better than any other combinations I've driven.


      Testing details:


      2008 135i Steptronic (original trans, for now)
      JB4 single turbo firmware & supporting flash
      FFTEC 5862 top mount single turbo
      BigTom intercooler, BMS OCC, BMS stat, etc
      Walbro 255 inline fuel pump mod
      Factory exhaust system (did not bother to open cutout)
      ~E30 mix for for 17psi runs. For 20psi+ runs enabled meth kit for fueling using a single CM10 nozzle.


      Notes:
      1) Was not going after any power records so left the tuning very conservative all around. At the same boost levels there is easily another 15hp in this setup with more advance. And no reason this turbo can't be cranked up to 28psi when the trans is ready.
      2) It made a lot more power than I was expecting. It's basically on pace with the 6466 at these lower boost levels only with much better spool.
      3) If the trans would shift this car would be seriously quick. I'll get to work on that ASAP.
















      Video of one of the 23psi runs:


      This article was originally published in forum thread: 135i BMS FFTEC Single Turbo Dyno Testing started by Terry@BMS View original post
      Comments 289 Comments
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by mjmarovi Click here to enlarge
        lol, turbo might hold, but who knows if it would actually yield much more power on this motor, hell pushing to 28-29 psi may not yield much more on that same turbo.
        It's hard to say. I found at the 22-23psi level the little filter I have on the turbo is a bit of a restriction. So I'll get the dremel out and make room for a larger one next. And perhaps explore higher boost levels on race gas instead of E85 to take the stress off the fuel system.
      1. Linracing's Avatar
        Linracing -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        It's hard to say. I found at the 22-23psi level the little filter I have on the turbo is a bit of a restriction. So I'll get the dremel out and make room for a larger one next. And perhaps explore higher boost levels on race gas instead of E85 to take the stress off the fuel system.
        Can't you mix e85 and 110?
      1. e82kid's Avatar
        e82kid -
        @Terry
        How did the transmission hold up in the 550whp range? Would a transmission build be required for that, or did it hold up?

        Thanks.
      1. Anthony@FFTEC's Avatar
        Anthony@FFTEC -
        Hey @Terry@BMS

        We've made 738hp @42psi through that tiny filter on a 2.4L. Removal yeilded anour 12hp gain. Just a funfact. Click here to enlarge
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by Anthony@FFTEC Click here to enlarge
        Hey @Terry@BMS

        We've made 738hp @42psi through that tiny filter on a 2.4L. Removal yeilded anour 12hp gain. Just a funfact. Click here to enlarge
        I agree, with my cobalt SS as well. Filter and no filter made no difference on my 25g which is a tad bigger than the pte he has on now.
      1. mjmarovi's Avatar
        mjmarovi -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        It's hard to say. I found at the 22-23psi level the little filter I have on the turbo is a bit of a restriction. So I'll get the dremel out and make room for a larger one next. And perhaps explore higher boost levels on race gas instead of E85 to take the stress off the fuel system.
        I'm really impressed with that little turbo so far, if you get 650whp out of it, that's just going to be awesome. How come you want to downsize the e92 turbo though? I thought the idea was big power on that guy?
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by mjmarovi Click here to enlarge
        I'm really impressed with that little turbo so far, if you get 650whp out of it, that's just going to be awesome. How come you want to downsize the e92 turbo though? I thought the idea was big power on that guy?
        When we first started with the single turbo project we thought we wanted 700whp in the e92. So the 6466 was the natural choice. And it is a great turbo. But after we got it running we found the car is more fun to drive at 600rw which is what we're running around with now. It's about the limit of traction, fueling is easier, and overall for how we use the car it's enough power. Since we're happy with the lower power levels we're thinking why not go get the low end back with a smaller turbo. And since I have both cars in the driveway I can really get a good back to back comparison between the 6466 kit and their new 5862 TS top mount. It's really no comparison for me. The 5862 kit is A LOT more fun. And if on race day we can push it to the limit like we've done with OEM turbos in the past and squeeze it up to 650rw that would just be icing on the cake. But even at 600rw it's fast enough.

        Where the 6466 would really shine though is in those 1/2 mile races. The real hot ticket might be their 6466 in a twin scroll format. The TS is a real game changer IMHO. But I'll have to weight the costs vs. benefits there considering the 135i is going to be the main race car and the E92 is more of a nice daily driver type car. In any event if someone wants to buy a top notch bolt in single turbo kit TODAY then FFTEC is really the only choice. It's not the cheapest option but it's really beautiful stuff and very well supported.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by Anthony@FFTEC Click here to enlarge
        Hey @Terry@BMS

        We've made 738hp @42psi through that tiny filter on a 2.4L. Removal yeilded anour 12hp gain. Just a funfact. Click here to enlarge
        Interesting. Maybe just a red herring then. I'll look at it more closely next time it's on the dyno.
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Interesting. Maybe just a red herring then. I'll look at it more closely next time it's on the dyno.
        Get some screens and put it in place of the filter and see if you gain anything from no filter.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        Get some screens and put it in place of the filter and see if you gain anything from no filter.
        I just removed the filter for a few runs and it seemed to make more power than with it on. But could easily be boost control related as I was working on that simultaneously. I'll look at it more closely next time.
      1. carcars's Avatar
        carcars -
        terry a great job congratulationsClick here to enlargeClick here to enlargeClick here to enlarge
      1. VargasTurboTech's Avatar
        VargasTurboTech -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        I just removed the filter for a few runs and it seemed to make more power than with it on. But could easily be boost control related as I was working on that simultaneously. I'll look at it more closely next time.
        Terry, I had pretty small filters on the Proto stage 3 kit, at one point I was sure they were restrictive and went through all the work of getting them out of there and putting screens on them just to make sure. Did dyno runs right before I took them off and after the screens were on, no difference at all I was pretty surprised, the filter is probably ok.
      1. mjmarovi's Avatar
        mjmarovi -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        When we first started with the single turbo project we thought we wanted 700whp in the e92. So the 6466 was the natural choice. And it is a great turbo. But after we got it running we found the car is more fun to drive at 600rw which is what we're running around with now. It's about the limit of traction, fueling is easier, and overall for how we use the car it's enough power. Since we're happy with the lower power levels we're thinking why not go get the low end back with a smaller turbo. And since I have both cars in the driveway I can really get a good back to back comparison between the 6466 kit and their new 5862 TS top mount. It's really no comparison for me. The 5862 kit is A LOT more fun. And if on race day we can push it to the limit like we've done with OEM turbos in the past and squeeze it up to 650rw that would just be icing on the cake. But even at 600rw it's fast enough.

        Where the 6466 would really shine though is in those 1/2 mile races. The real hot ticket might be their 6466 in a twin scroll format. The TS is a real game changer IMHO. But I'll have to weight the costs vs. benefits there considering the 135i is going to be the main race car and the E92 is more of a nice daily driver type car. In any event if someone wants to buy a top notch bolt in single turbo kit TODAY then FFTEC is really the only choice. It's not the cheapest option but it's really beautiful stuff and very well supported.
        Yeah, I hear ya I was originally looking at 6466 or 6766 and comparables, just don't see that size turbo on this car yet...5862 looks pretty good so far, but don't be mad when I spool just as fast and make another 100whp on my FP HTA Click here to enlarge haha

        Yeah, I hear ya on FFtec too, I know I'll love my car when it's done, but not many can go this long without their car.
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by mjmarovi Click here to enlarge
        don't be mad when I spool just as fast and make another 100whp on my FP HTA Click here to enlarge haha
        We all have hopes and dreams brotha Click here to enlarge LOL. I would love to see that myself.
      1. V8Bait's Avatar
        V8Bait -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        In my experience it's just a function of fuel and air/fuel ratio. I'm running ~11.8:1 on E30 and started to see fuel pressure dipping around 500rw. If I was running race gas and 12.5:1 no reason it can't support 600rw or more. Frankly it would be nice to dump the meth kit and run just straight E50 and hit 600rw. But with todays fueling hardware it's just not possible with the air/fuel ratios and steady fuel pressure I'd need to be comfortable with it. Maybe with tomorrows hardware it can be done.
        I just wanted to quote this so more people can read it and better understand the fuels and how the limitations work/why. Great post here. It's such a misunderstanding for people.
      1. Anthony@FFTEC's Avatar
        Anthony@FFTEC -
        @Terry@BMS the screen on the turbo inlet is a bad plan. We've found them to be extremely restrictive. Perhaps due in part to the way they chop up the air stream. Kills flow and creats mini vortices right in front of the compressor wheel
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by Anthony@FFTEC Click here to enlarge
        @Terry@BMS the screen on the turbo inlet is a bad plan. We've found them to be extremely restrictive. Perhaps due in part to the way they chop up the air stream. Kills flow and creats mini vortices right in front of the compressor wheel
        Very very interesting.
      1. VargasTurboTech's Avatar
        VargasTurboTech -
        Click here to enlarge Originally Posted by Anthony@FFTEC Click here to enlarge
        @Terry@BMS the screen on the turbo inlet is a bad plan. We've found them to be extremely restrictive. Perhaps due in part to the way they chop up the air stream. Kills flow and creats mini vortices right in front of the compressor wheel
        Totally agree with this. No one should ever run a screen on a turbocharger for any period of time, forget the vortices, thats the least of your worries, you are letting dirt, rocks, you name it that can get through the screen directly into the compressor, if you fear you are running a restrictive filter you can remove it and run either a very open mesh screen or no filter at all on the dyno and see if anything changes, but running any sort of screen on the street is asking for very short lives of your expensive turbochargers. The only reason people run them is because of bad turbo placement where you can't get a proper filter in place. Our stage 3 filters were sized accordingly for what we thought it would need, but once we ran into a few problems we were just checking everything to insure we could check those off the list. The filters were not the problem and the screens were removed after a few dyno pulls and the filters reinstalled. Bottom line, never run screens people, they are bad news in more ways than one.
      1. lamia2super's Avatar
        lamia2super -
        run a metallic style filter instead of paper
      1. Ak335i's Avatar
        Ak335i -
        Click here to enlarge Originally Posted by V8Bait Click here to enlarge
        I just wanted to quote this so more people can read it and better understand the fuels and how the limitations work/why. Great post here. It's such a misunderstanding for people.

        strange,
        i made 642whp with no meth and e30 ish and 25psi

        255 inline

        only difference is i have the vargas hpfp mod and rail