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    • Review and dynos of the Evolve Automotive E90/E92 M3 X-Pipe and Evolve Automotive DCT transmission software

      In my opinion, the E90 M3 is pretty fast, but I found the power delivery of the car to be somewhat bland and mundane. When compared to my near full bolt-on and tuned E46 M3, I found the E90 M3 to be a tad weaker in the low-mid range of the powerband. On top of that, it didn't have much of a growl and snarl that a V8 should have.


      One of the most popular power modifications for the E9X M3 is some sort of primary cat delete. The E9X M3 X-Pipe is equipped with both primary cats (immediately after the header) and secondary cats (further downstream before the crossover). Obviously the primary cats are rather restrictive considering that it creates an incredible amount of back pressure immediately after the collector of the stunning S65B40 headers. This primary cat delete is analogous to the catless headers that many E46 M3 owners upgrade to.

      Considering some of my complaints of the car, I knew that some sort of primary cat delete was something I needed. I contemplated test pipes, eBay X-Pipes, and a slew of big brand name X-Pipes. Ultimately, I decided to get one of the top tier stainless steel X-Pipes. In the end, I acquired a stunning X-Pipe designed by Evolve Automotive. What I really like about their X-Pipe is that it had high flow catalytic converters and a pair of resonators. This means very high flow, low back pressure, low rasp, and low volume when paired with my stock muffler.

      PERSONAL REVIEW
      Sound - Cold start sounds insane, loud, and wicked! Warm idle is much more subtle, but there is a slight growl and rumble. Light throttle exhibits no drone, low volume, low rasp, yet a clean growling tone. Overall, very classy and tasteful. Heavy throttle provides a very noticeable roar! It sounds like the V8 is now very awake. Rasp is still very absent, but pure ferocity is heard on a quieter scale considering the stock muffler.

      Smell - I honestly do not notice any difference. This was a huge relief considering my experience with my E46 M3 when I went catless. Cold start, warm idle, cruising, windows up, windows down, literally little to none presence of olfactory nuisance.

      Fitment - 100% perfection.

      Power - Incredibly noticeable. Completely rid of all my complaints. Very strong low-mid-high end power. Upon my first 50 miles of driving, I felt that there was just more power everywhere! I honestly was not expecting to feel that much of a difference considering the weight of the car, but it is absolutely profound. At any point in the power band, you can mash the throttle and urgency will be present. I am only totally pleased and impressed by this very simple bolt-on modification. I wasn't sure what to expect when I finally got the chance to dyno. Upon analyzing the data, there is a very consistent 20-25whp gain all across the board! No wonder I felt such a big improvement in power regardless of state of the powerband.

      DYNOS
      2009 BMW E90 M3 DCT
      DynoJet248X at Dean's Performance, St. Charles, IL
      4th Gear | 220E | 93 Octane
      Evolve Automotive X-Pipe w/ 200cpsi Cats
      Evolve Automotive DCT Software

      Notes: Consistent and realistic measurement was absolutely key with our data collection. To assure a proper controlled and accurate measurement, we assured to log several parameters to provide a level playing field. IATs were properly controlled and monitored for consistency. Ignition was logged so that the proper runs can be chosen where this does not become a variable, but a constant control. Please note how the ignition logs are identical between Stock and Evolve X-Pipe runs. To some degree, this strengthens the evidence of the sole effect of the X-Pipe and decreased back pressure. No dyno tricks, no misleading data, only candid and fair comparison. Notice how even the AFRs are nearly identical. Both of these logs prove that there is no tweaking of the DME, the MSS60 DME has stabilized for consistency, and most comparable runs were chosen.

      SAE w/ AFR


      SAE w/ Conditions


      SAE w/ Ignition


      Uncorrected

      PHOTOS
      E90 M3 on jack stands, ready for install


      Hardware transferred to Evolve Automotive X-Pipe


      O2 Sensors transferred to Evolve Automotive X-Pipe


      Recommended new hardware

      VIDEO

      ADDENDUM
      I made the mistake of not analyzing the data on a closer more finite resolution, missing how there is a bit of a difference in Ignition logs between the posted stock and X-Pipe data.

      So I went back through all my DRFs and chose Stock_RunFile_004 based of the Ignition I hit and how it was closest to EvolveXPipe_RunFile_006. Check out the comparison and data to help support why I chose these two specific runs. Even in this case, Stock_RunFile_004 still hit higher ignition targets, although I'm not sure to how much degree this could be advantageous or not. I looked over the data and made the following graphs. When choosing the most appropriate runs to compare to by using Ignition and IAT as a control, it seems like the following two runs might be more accurate.

      I enjoy being candid with you all, so if anyone has any input and good information to educate us all, it would greatly be appreciated!

      SAE - WHP vs WTQ


      SAE - WHP vs AFR


      SAE - WHP vs IAT


      SAE - WHP vs IAT w/ Displayed Conditions


      SAE - WHP vs Ignition

      Circling back to my original dyno comparison at the beginning of this write up. Here is a closer look comparing the Ignition logs between Stock_RunFile_005 and EvolveXPipe_RunFile_006. Please note how the Stock_RunFile_005 hits a bit higher ignition compared to EvolveXPipe_RunFile_006.

      SAE - WHP vs Ignition

      Here's a graph depicting Stock_RunFile_004, Stock_RunFile_005, and EvolveXPipe_006. Notice between the two Stock_RunFiles how Ignition may potentially affect depicted power output, despite the minute difference in Ignition parameters.

      SAE - WHP vs Ignition

      And very lastly, he's a comical graph showing how easy it is to exaggerate gains by choosing the lowest measuring Stock_RunFile and highest measuring EvolveXPipe_RunFile. From my personal experience, the first few runs are usually low reading because fluids aren't up to temp, DME isn't hitting stabilized parameters, and the dyno rollers are still warming up. Pretty funny how it's so easy to "add" near 10whp delta in power by choosing misleading runs.

      SAE - WHP vs TQ
      This article was originally published in forum thread: REVIEW.DYNO | Evolve Automotive X-Pipe started by flipm3 View original post
      Comments 15 Comments
      1. Sticky's Avatar
        Sticky -
        Dude... how did I miss this.

        Ridiculously good thread and data.

        So that is the DCT software + X-pipe? So tune + x-pipe? Or just trans software? Trying to get clarification.
      1. flipm3's Avatar
        flipm3 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Dude... how did I miss this.

        Ridiculously good thread and data.

        So that is the DCT software + X-pipe? So tune + x-pipe? Or just trans software? Trying to get clarification.
        Thanks @Sticky !

        You all know how I love my data collection, LOL.

        You are correct, this is solely just the Evolve DCT Transmission Software and X-Pipe. This is without the Evolve Stage 2 Tune. I will be dynoing the Evolve Stage 2 Tune later tonight Click here to enlarge
      1. LostMarine's Avatar
        LostMarine -
        nice! you my friend are very whats the word- precise- in your data collection Click here to enlarge
      1. Group.america's Avatar
        Group.america -
        Click here to enlarge Originally Posted by flipm3 Click here to enlarge
        Thanks @Sticky !

        You all know how I love my data collection, LOL.

        You are correct, this is solely just the Evolve DCT Transmission Software and X-Pipe. This is without the Evolve Stage 2 Tune. I will be dynoing the Evolve Stage 2 Tune later tonight Click here to enlarge

        This is $#@!ing good... I shouldn't swear but it is fxxking good
      1. Group.america's Avatar
        Group.america -
        Evolve really needs a USA east coast VENDOR

        like Mike@VAC really be good to get some of these products over here
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        Evolve really needs a USA east coast VENDOR
        they have one
      1. spool twice's Avatar
        spool twice -
        can't wait to see your results. I'm dynoing my Evolve stage II this weekend to see how I stack up (test pipes, air-filter, MS pullies)
      1. Sticky's Avatar
        Sticky -
        Finally got around to promoting this to the front page, just minor edits. Excellent write-up @flipm3! This is how it's done. Learn from this people...
      1. Puerto Rican 335d's Avatar
        Puerto Rican 335d -
        Pretty good I say wait for the STAGE II gets implemented and then WOW!!
      1. LostMarine's Avatar
        LostMarine -
        Solid stuff man! if only I could write the s/c review as good as you Click here to enlarge
      1. inlineS54B32's Avatar
        inlineS54B32 -
        Awesome review - I was just asking about this, and am installing a Turner test pipe in T-minus 13 days... Am now stoked more than ever - nice writeup!
      1. inlineS54B32's Avatar
        inlineS54B32 -
        How is the Evolve DCT software? Is it much better than stock? Do you know if it is truly the same bits as the GTS bin?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by inlineS54B32 Click here to enlarge
        How is the Evolve DCT software? Is it much better than stock? Do you know if it is truly the same bits as the GTS bin?
        There's another review of the DCT software here.
      1. nafoo's Avatar
        nafoo -
        Wow, that's a huge power increase from just X-Pipes.
      1. inlineS54B32's Avatar
        inlineS54B32 -
        Click here to enlarge Originally Posted by nafoo Click here to enlarge
        Wow, that's a huge power increase from just X-Pipes.
        Yeah, the primary cats are extremely restrictive - the entire power curve is just shifted up 20 points or so. Yeah, it's only XX "peak" horsepower, but look at all that area under the curve. Good stuff to do on this car.