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  1. #1
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    REVIEW.DYNO | Evolve Automotive X-Pipe

    INTRODUCTION
    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
    Click here to enlarge

    SAE w/ Conditions
    Click here to enlarge

    SAE w/ Ignition
    Click here to enlarge

    Uncorrected
    Click here to enlarge

    PHOTOS
    E90 M3 on jack stands, ready for install
    Click here to enlarge

    Hardware transferred to Evolve Automotive X-Pipe
    Click here to enlarge

    O2 Sensors transferred to Evolve Automotive X-Pipe
    Click here to enlarge

    Recommended new hardware
    Click here to enlarge

    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
    Click here to enlarge

    SAE - WHP vs AFR
    Click here to enlarge

    SAE - WHP vs IAT
    Click here to enlarge

    SAE - WHP vs IAT w/ Displayed Conditions
    Click here to enlarge

    SAE - WHP vs Ignition
    Click here to enlarge

    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
    Click here to enlarge

    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
    Click here to enlarge

    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. Click here to enlarge

    SAE - WHP vs TQ
    Click here to enlarge

    Thanks for looking!
    2002 E46 M3 6MT | Jet Black . Black Nappa | My GermanBoost Build Thread
    2009 E90 M3 DCT | Melbourne Red . Speed Cloth

  2. #2
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    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.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    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
    2002 E46 M3 6MT | Jet Black . Black Nappa | My GermanBoost Build Thread
    2009 E90 M3 DCT | Melbourne Red . Speed Cloth

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    nice! you my friend are very whats the word- precise- in your data collection Click here to enlarge

  5. #5
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    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
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  6. #6
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    Evolve really needs a USA east coast VENDOR

    like Mike@VAC really be good to get some of these products over here
    2005 Porsche 996 TTS RWD - Eurodyne 60-130 in 6.50s
    2015 Audi A3 2.0 TFSI - Eurodyne 0 - 100 in 10.67s
    2015 McLaren 650S (RHD) - UK - 1/3rd owner yet to drive


    Click here to enlarge



  7. #7
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    Click here to enlarge Originally Posted by Group.america Click here to enlarge
    Evolve really needs a USA east coast VENDOR
    they have one

  8. #8
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    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)
    Loe P.
    B8.5 Audi S5 3.0"T" - GIAC stage II ECU / GIAC DSG TCU / AWE-tuning Pulley / AFe filter / 034 TBB / mod airbox / X-pipe
    - 09' E90 M3 7-DCT Interlagos Blue / Novillo Silver - gone Click here to enlarge
    [K&N filter|MS pullies|test pipes|Evolve Stg II tune/Servotronic/GTS-DCT Tune|Euro MDM]


  9. #9
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    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...
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Pretty good I say wait for the STAGE II gets implemented and then WOW!!

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    Solid stuff man! if only I could write the s/c review as good as you Click here to enlarge

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    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!

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    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?

  14. #14
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    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.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Wow, that's a huge power increase from just X-Pipes.
    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

    2007 e92 Mont. Blue 335i | 6MT | COBB Tuned | Quaife 3.46 LSD | Helix FMIC | AA DPs | HKS Exhaust | DCI | Stett CP w/ Forged DVs | KWv2 Coilovers | UUC Sway Bars & SSK | HPF Stg 2 Clutch | HFS-4 | M3 Suspension Bits | DEFIVfab Diff Lockdown Kit | Stoptech Trophy BBK

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    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.

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