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    • REVIEW|DYNO : Supersprint V1 Stepped Header vs V2 Stepped Header

      Many of us know that some of the most sought after headers for the S54B32 is the Supersprint Stepped Header. Supersprint's genius plan of starting with a narrow primary, then stepping up prior to the collectors in the headers were designed to optimize low-end torque and high-end power. Over the years, Supersprint designed two different variants. One that is compatible with the OEM Flanged Section 1 along with RHD E46 M3s, another that uses it's own 2.5" Slip On Section 1.

      I purchased my SS V2 Stepped Header and CPI Euro200 from Jack at Custom Performance. Jack is an amazing guy, very knowledgable, and offers amazing products and prices on all your exhaust needs! Upon the installation of the perfectly fitting SS V2 Stepped Header and CPI Euro200, I could feel the drastic difference in power from stock. There was just much more power everywhere throughout the power band. All the typical flat spots in the power band were now gone and the car just pulled nice and smooth to redline. You could almost tangibly feel the car breathing better. When I got my SS V2 Stepped Headers, I chose to go with the CPI Euro200 to meet emissions requirements here in IL, along with decreasing the smell and rasp. The Section 1 utilizes two Magnaflow Metallic Race Cats that are 200cpsi. Overall, I was extremely pleased with the money spent and performance gain.

      Fast forward many many months to Black Friday 2011. Jared at Supersprint NA announced an incredible sale on the SS V1 Stepped Header and V1 SPipe. In all honesty, this was the header for many years that I truly wanted. At the time that I committed to purchasing headers, my budget just didn't allow me to swing for these bad boys. Thanks to Supersprint's generosity and willingness to please our community, I had to take advantage of their great sale. Honestly, I was not really expecting any gains from making the switch. Everyone has told me that there really is not much to be gained from moving to catless and the bigger headers. Due to my stubbornness, I persisted and bit the bullet.


      PHOTO COMPARISON

      Supersprint V2 Stepped Headers




      Well crafted collector. Notice how seamless everything is merged together.



      ~1.5" Primaries that step up to ~2" before meeting at the collector


      Close up of collector and EGT bung. Notice the beautiful TIG welding.


      Both Pre and Post Cat O2 Bungs and 2.36" outlet piping.


      More Pre and Post Cat O2 Bungs


      More fancy stepped goodness


      Perfect flanges


      Etched Supersprint shameless plug

      Custom Performance Innovations Euro200




      TIG welded flanges


      MIG welded cats and O2 bungs


      MIG welded cats and O2 bungs


      SS V2 Stepped + CPI Euro200

      Supersprint V1 Stepped Headers




      Primaries with incredibly TIG welds


      ~1.5" stepped up to ~2"



      Sexy collector and welds


      Full 2.5" outlet flange!!


      Internal portion of Post Cat O2 sensor


      SS V1 Stepped vs SS V2 Stepped


      2.36" vs 2.5"


      Notice the different pathways


      2.36" vs 2.5"


      Slip On vs OEM style


      Massive full 2.5" piping for SS V1 SPipe


      Post Cat O2 Sensor


      PERSONAL REVIEW

      As I noted before, I was not really expecting to feel an incredible difference between the two. The Magnaflow cats flow very well, the V2 Stepped is already a great design, and the V1 Stepped has been said to provide minimal gains over the V2 Stepped.

      Upon installation, I noticed that smell of exhaust fumes has increased, but it wasn't as bad as people said. Maybe my sense of smell isn't as sensitive, but I really don't notice it in the car with the windows up and in traffic. It is definitely noticeable on cold start in the garage first thing in the winter morning though.

      Sound wise, not too much different either. I was expecting a ton of more rasp. Nope, didn't notice much of a difference. The tone was slightly different, almost a crisper more refined type of rasp with the V1 Stepped Headers. Personally, I actually enjoy it more with it being catless. The volume is no louder either, no more drone than stock. Overall, I am very happy with the sound of the car. It's soft, quiet, and not terribly raspy.

      Driving impressions, there is a tangible difference between the two for sure. The biggest difference that I could feel was just how hard it pulls to redline. I really kept telling myself that it must be adrenaline or the placebo effect. So I just kept driving it and driving it and driving it and I still noticed the difference. It pulls great at the very end and doesn't seem to run out of steam.

      Overall, I am very pleased with the upgrade to the SS V1 Stepped Header and V1 SPipe. It was worth the annoying removal and installation of all headers. It was worth waiting months for them and shipping out my prior setup. I am very happy I came full circle and ended up with the headers that I originally wanted.


      NOTES

      I will be the firs to admit that this is not a true apples to apples comparison. Primarily because my dynos with the SS V2 Stepped Headers included the CPI Euro200. Whether the Euro200 robs power or increases low end power/torque...I don't know. In addition, the dyno runs were done on two different days weeks apart. Weather conditions were ever so slightly different, mainly the drastic drop in humidity. I truthfully don't know if that will effect power or not. So please take this review and dyno results with a grain of salt. All I can guarantee is that either setup is well worth the money to me. The car pulls so hard down low and screams all the way to the top of redline.


      DYNOS

      2002 BMW M3
      Dynojet 248X at Dean's Peformance, St. Charles, IL
      4th Gear | 93 OCT | Hood Open

      SAE


      STD


      UNCORRECTED


      CONDITIONS


      SPEED (depicts that same gear was used)


      DYNO ANALYSIS

      Overall, I was a bit surprised to see these results. The dyno graphs clearly depict the drastic power gained, pretty much throughout the whole power band! The whole purpose of the stepped design was to provide strong low-end torque and monstrous top end. Looking at the substantial gain in area-under-the-curve is clearly seen! That data collection is very tangible on the street. There is no doubt in my mind that the larger 2.5" piping and removing of the cats is helping a lot.

      Looking back in hindsight, I can't really pinpoint where all the gains are coming from. Are they mostly from removing the cats despite everyone saying that it doesn't rob that much power? Is it really coming from the difference in piping design and flow characteristics?

      Who knows...

      All I know is that Supersprint currently makes the best headers on the market for the S54B32. Perfect fitment. Superior build quality. Welds that look like art.

      Stay tuned for more. I have been doing all these dynos in the past to get consistent baselines before I dyno my Evolve Carbon Fiber Airbox and AlphaN Tune.

      MANY THANKS TO

      Hans at Dean's Performance for the dyno time and great patience.

      Jared at Supersprint NA for providing an amazing opportunity to acquire the SS V1 Stepped Headers and V1 S Pipe.

      Jack at Custom Performance Innovations for getting me hooked on the power mod craze and the SS V2 Stepped Header along with your incredible CPI Euro200.

      My buddies at iND Distribution for installing removing the prior exhaust setup and throwing in my power sapping OEM headers.

      My buddies at VS Motorsports for installing the SS V1 Stepped Headers and SPipe. Thanks for letting me borrow the sick E28 528e! That thing had more electronics in the car than my E46 and E90 have.

      The good friends at Evolve Automotive for educating me on how to analyze data and to strive for only the best products out there! Time get this bad boy tuned along with the CF Airbox
      This article was originally published in forum thread: Article: Review, dynos, and analysis of Supersprint E46 M3 S54 header options: Supersprint V1 Stepped Header vs V2 Stepped He started by flipm3 View original post
      Comments 29 Comments
      1. PEI330Ci's Avatar
        PEI330Ci -
        Wow!

        Great write up, I really enjoyed reading that.
      1. Yukohama's Avatar
        Yukohama -
        awesome review! any sound clips?
      1. flipm3's Avatar
        flipm3 -
        Click here to enlarge Originally Posted by PEI330Ci Click here to enlarge
        Wow!

        Great write up, I really enjoyed reading that.
        That definitely means a lot coming from you!! It's not where near the documentation of your incredible build, but I'm just happy to contribute something to the community.

        Click here to enlarge Originally Posted by Yukohama Click here to enlarge
        awesome review! any sound clips?
        Unfortunately, I do not have any videos of the exhaust setup. I do have a GoPro HD2, but I forgot to pack it before leaving for my short temporary relocation for work. I'll be back home at the end of May. That is on my to-do-list along with getting the car tuned.

        Thanks for the compliments!
      1. LostMarine's Avatar
        LostMarine -
        now thats how you do an enthusiast write-up!
      1. Sticky's Avatar
        Sticky -
        Oh my goodness!!! Now this is how it's done, front page tomorrow.
      1. PEI330Ci's Avatar
        PEI330Ci -
        Click here to enlarge Originally Posted by flipm3 Click here to enlarge
        That definitely means a lot coming from you!! It's not where near the documentation of your incredible build, but I'm just happy to contribute something to the community.
        This is better than my ramblings, definitely front page worthy.

        Thanks for contributing to the community.
      1. Sorena's Avatar
        Sorena -
        Good job my friend, very nice write-up Click here to enlarge
      1. dreikraft's Avatar
        dreikraft -
        how much did those set you back?

        i remember back in 09 i paid like over 2k for the headers and 700 for the stupid section 1. box showed up hella late (like days) no packaging inside..just this giant box so they could bang around in there (couldve been BMP's fault i guess but why would they repackage what they get from SS?).

        anyway, its funny to see how SS revamped the designed so the whiners could run a stock sec 1 and sure enough its not as good as the orig!

        thanks for sharing OP... I bet you love the top end now with the V1
      1. flipm3's Avatar
        flipm3 -
        You can view the page at http://www.bimmerboost.com/content.p...ed-Header&
      1. flipm3's Avatar
        flipm3 -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        now thats how you do an enthusiast write-up!
        Thanks man!! Just trying to keep up with all your informative threads and reviews Click here to enlarge

        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Oh my goodness!!! Now this is how it's done, front page tomorrow.
        Click here to enlarge

        Sticky, you da man!!!

        Click here to enlarge Originally Posted by PEI330Ci Click here to enlarge
        This is better than my ramblings, definitely front page worthy.

        Thanks for contributing to the community.
        Thanks, again, much appreciated! Now...if only I had the skill to fabricate, weld, and engineer stuff like you, haha

        Click here to enlarge Originally Posted by Sorena Click here to enlarge
        Good job my friend, very nice write-up Click here to enlarge
        Thanks!!

        Click here to enlarge Originally Posted by dreikraft Click here to enlarge
        how much did those set you back?

        i remember back in 09 i paid like over 2k for the headers and 700 for the stupid section 1. box showed up hella late (like days) no packaging inside..just this giant box so they could bang around in there (couldve been BMP's fault i guess but why would they repackage what they get from SS?).

        anyway, its funny to see how SS revamped the designed so the whiners could run a stock sec 1 and sure enough its not as good as the orig!

        thanks for sharing OP... I bet you love the top end now with the V1
        Yeah prices have been adjusted a few times since then, part of the reason it took me so long to grab them. I bought my SS V2 Stepped Headers and CPI Euro200 for an insane dealer, far cheaper than they used to be. Supersprint then jacked up pricing again last year and I was able to recover pretty much all my cost when I switched over to SS V1 Stepped and V1 S Pipe.

        Supersprint NA/BMP did a great job packing all my parts over the years. Incredibly secure and packaged!

        In the end, it was a very fun project and learning experience.
      1. dreikraft's Avatar
        dreikraft -
        Glad they figured out how to package $2k headers finally!
        What's next for you? Schricks? Or it's done
      1. DBFIU's Avatar
        DBFIU -
        Beautiful headers and nice gains.
      1. onurleft's Avatar
        onurleft -
        Beautiful headers and a great write up!

        It's airbox time. I'm sitting at 326rwhp with an ebay header, facotory e36 m3 exhaust and a Bimmerworld Carbon Plenum with Alpha-N. There's a lot left to be unleashed in these s54's

        I'm waiting for the Epic Motorsports Headers Click here to enlarge
      1. GG///M3's Avatar
        GG///M3 -
        326whp is awesome. How is Alpha_N working out?
      1. flipm3's Avatar
        flipm3 -
        Click here to enlarge Originally Posted by dreikraft Click here to enlarge
        Glad they figured out how to package $2k headers finally!
        What's next for you? Schricks? Or it's done
        I eventually what to start working with the head and throttle bodies. It's not really a priority for me right now. If ever, I'd like to bore out my throttle bodies, Schrick 288/280 cams, and do some mild headwork.

        Before doing all that though, I still have throw on my OE CSL Roof and finally spend time on the track. I have had a 2+ year hiatus from going to some of the local tracks, I miss it too much.

        Click here to enlarge Originally Posted by DBFIU Click here to enlarge
        Beautiful headers and nice gains.
        Thanks! Click here to enlarge

        Click here to enlarge Originally Posted by onurleft Click here to enlarge
        Beautiful headers and a great write up!

        It's airbox time. I'm sitting at 326rwhp with an ebay header, facotory e36 m3 exhaust and a Bimmerworld Carbon Plenum with Alpha-N. There's a lot left to be unleashed in these s54's

        I'm waiting for the Epic Motorsports Headers Click here to enlarge
        I have been following your build! Very impressive work you have done! I am very interested in seeing if Epic's claim are realistic or not. I have heard some very optimistic things from Bimmerworld and Epic.

        Once I get tuned on the dyno, I am hoping to make something close to what you're putting down. Of course, every dyno reads differently, but I'd love to see a 15-20+whp gain when everything is dialed out.

        Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
        326whp is awesome. How is Alpha_N working out?
        My Alpha-N is incredible! Rock steady idle, amazing throttle response. Heal-toeing on the top end is unbeatable! The best part is that when I'm driving around town, it feels 100% silky smooth. With my current tune, it was just to at least get my car running before I go to the dyno. I know for sure there is some power still be had. I'm loving it more and more each day...as well as the insane induction noise!
      1. SpeedLimit?'s Avatar
        SpeedLimit? -
        thanks for the excellent write up!
      1. GG///M3's Avatar
        GG///M3 -
        Click here to enlarge Originally Posted by flipm3 Click here to enlarge
        I eventually what to start working with the head and throttle bodies. It's not really a priority for me right now. If ever, I'd like to bore out my throttle bodies, Schrick 288/280 cams, and do some mild headwork.

        Before doing all that though, I still have throw on my OE CSL Roof and finally spend time on the track. I have had a 2+ year hiatus from going to some of the local tracks, I miss it too much.


        Thanks! Click here to enlarge


        I have been following your build! Very impressive work you have done! I am very interested in seeing if Epic's claim are realistic or not. I have heard some very optimistic things from Bimmerworld and Epic.

        Once I get tuned on the dyno, I am hoping to make something close to what you're putting down. Of course, every dyno reads differently, but I'd love to see a 15-20+whp gain when everything is dialed out.


        My Alpha-N is incredible! Rock steady idle, amazing throttle response. Heal-toeing on the top end is unbeatable! The best part is that when I'm driving around town, it feels 100% silky smooth. With my current tune, it was just to at least get my car running before I go to the dyno. I know for sure there is some power still be had. I'm loving it more and more each day...as well as the insane induction noise!
        I love this n/a stuff. I wouldn't mind owning a e36 with a s54 swap. 3.91 gears, and a 6 speed trans. That would make for 1 fun track car.
      1. flipm3's Avatar
        flipm3 -
        Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
        I love this n/a stuff. I wouldn't mind owning a e36 with a s54 swap. 3.91 gears, and a 6 speed trans. That would make for 1 fun track car.
        TRUE THAT!!!! Click here to enlarge

        or what about an E46 M3 with an S85B50....... Click here to enlarge
      1. GG///M3's Avatar
        GG///M3 -
        Click here to enlarge Originally Posted by flipm3 Click here to enlarge
        TRUE THAT!!!! Click here to enlarge

        or what about an E46 M3 with an S85B50....... Click here to enlarge
        There is also a e36 with 1 shoe horned into 1.
      1. onurleft's Avatar
        onurleft -
        Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
        326whp is awesome. How is Alpha_N working out?

        Haha especially in an E36M with 3.91 gears and a 6 speed!! Haha Click here to enlarge

        The throttle response is just on another planet and the sound.... I can't even think of enough adjectives to describe the sound. Anywhere I go if I give a hint of throttle it turns heads. People walking down the street in front of me look back kind of like they are deers about to get hit by a bus.