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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications Mission Performance Presents World's First Tuning Solution For G20 M340i.

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      07-30-2019, 06:25 PM   #1
MissionPerformance
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Mission Performance Presents World's First Tuning Solution For G20 M340i.

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It has been very busy at our development headquarters, but we are finally able to present you with the world's first solution to tune ANY M340i!

First of, let me start by saying that BMW is making it harder and harder for us to crack these DMEs. Back in the day, they introduced some proprietary checksum calculations that were very difficult to reverse engineer. Then they introduced dummy words/bytes to mark files as factory. Then out of the box thinking when it comes to file layouts followed by RSA signatures that are virtually unbreakable. And now we have all new can of worms to deal with when it comes to G20 platform, though once again, we are able to crack it.

The M340i was extremely over-rated when it rolled off the production plan, with nearly 400whp in stock form! Yes you read it right, if you purchased one of the first vehicles in production, then you have near 400whp STOCK car. That is due to the fact that BMW forgot to implement SWT (Tuning Authorization Certificate), and thus customers received a factory tuned cars. But quick, BMW caught onto this issue, and implemented a software "fix" that limited your power a bit. This new fix limited your power to 346whp (390bhp) and yet that still was over what EPA/BMW specs should be, so early July of 2019, BMW implemented yet another software fix to bring the car down to advertised 338whp(382bhp). Not only did they lower the power down, they also implemented a new style firewall against tuning, fully disabling our access to the DME key sectors that we have once used to exploit and be able to flash our own files. After this latest updates, the boot-loader was moved to a whole new protected area that no one has access to. On top of this, all new flashing routines were implemented to ensure that tuners can not modify the existing bootloader, or even access the backup one previously stored in open area of the ECU.

After a LOT of work and nearly frying this brand new ECU 5 times, we were able to bypass all of the BMW protection, and now we have a fully ability to crack even the newest bootloader available. And all of this can be done over OBD2 port.


Now for the numbers and graphs:
The vehicle is a bone stock 2020 M340i with only 400miles on the clock. At 300 miles we have flushed out the factory 0w-20 oil and went with Motul 4w-40, our preferred choice when it comes to oil for B58. At the same time we gapped the factory plugs (Still Champion to 0.025") and changed the filter. You can see that after 300miles, this fresh motor accumulated a bit of metal:





Now finally at the dyno we did a baseline pull for the Pre-July flash and also one Post July update (It is very important to set this car into Dyno mode or else transmission will be acting up and shifting for you):







And the Stock numbers came in at:


And for those who are interested, here is a stock datalog:
https://datazap.me/u/missiontuning/m340run4stock


Time for mFlasher to some magic and flash this otherwise bone stock M340i to something a bit more fun:




And graphs

Stage 1 flash:



Stage 1.5 flash:




Logs:
https://datazap.me/u/missiontuning/m...&data=17-20-23


One thing is clear now, Fuel pressure is no longer an issue as we have amazing supply of fuel, even at redline at 20psi of boost. What is a limiter now, is the turbo. at nearly 440whp, we are outside of turbo's ability to flow fresh air and start chocking the motor. This clearly can be seen on the follow graph at around around 5300rpm.




The 440whp/480ftlb is possible on a bit of modified hardware with better fuel, CAT delete and maybe water injection. With those things in place, we can run a bit more timing and take stress away from the turbo, though this platform can easily hit 500whp once Pure rolls out support for this engine.


And a short video of the dyno run:
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      07-30-2019, 06:29 PM   #2
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      07-30-2019, 11:08 PM   #3
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pioneer, mechanic, author, game changer - once again Alex you go first and we'll see the others follow. Congrats on what you've done here
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      07-30-2019, 11:12 PM   #4
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That is crazy... wow
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      07-31-2019, 07:16 AM   #5
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Annoying to hear that the M340i I just ordered will be slower than the M340i's produced earlier in the year. I guess the solution is to buy this tune. When will it be available for purchase?

What can you expect on a fully stock car with 93 octane gas? Is Stage 1 essentially completely stock?
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      07-31-2019, 11:32 AM   #6
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I'm liking those numbers, now just need someone to put it on the drag strip

Definitely interested in getting a tune from you guys when it's finished, I'm only a couple hours away.
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      07-31-2019, 10:26 PM   #7
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So... do you know what dates they stopped giving out tuned cars? I'm sure all M340i owners are curious if their cars are 400whp cars, or was this fixed in some other way?
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      07-31-2019, 10:28 PM   #8
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The most powerful version was patched very early on, just few I levels into S18a. Only chance that you have that version on a car would be if you have one of the first few production cars that never went for service.
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      08-01-2019, 05:28 PM   #9
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Quote:
Originally Posted by MissionPerformance View Post
The most powerful version was patched very early on, just few I levels into S18a. Only chance that you have that version on a car would be if you have one of the first few production cars that never went for service.
Ah, they flash them when we bring them for service?!
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      08-01-2019, 09:50 PM   #10
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Quote:
Originally Posted by DonTheDon View Post
Ah, they flash them when we bring them for service?!
Yes. There was already a TSB for new software.
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      08-02-2019, 08:40 AM   #11
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Seems like false advertising that you test drive a vehicle, buy it, only for them to then "software update" it to have the power reduced that significantly?

That alone makes me feel justified in flashing my vehicle, though I'm way too worried about something blowing up and then voiding my warranty.
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      08-02-2019, 08:44 AM   #12
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Sadly, this is a case and your car will get flashed if there is a tsb out and you bring your car for service. Like we tell our customers, even if your car is stock and as long as everything functions correctly, do not authorize your SA to flash your car.
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      08-02-2019, 09:28 AM   #13
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Quote:
Originally Posted by MissionPerformance View Post
Sadly, this is a case and your car will get flashed if there is a tsb out and you bring your car for service. Like we tell our customers, even if your car is stock and as long as everything functions correctly, do not authorize your SA to flash your car.
When will this flash be available for m340i's via a diy tune like you have for the older b58 products? My car arrives in Sept and would be interested!
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      08-02-2019, 11:34 AM   #14
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Do you think I could have been tricked about this "environmental recall" I noticed a significant decrease in power after I serviced it for the recall.. I ordered the vehicle in February so I got a really early production model... I wonder if I got duped
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      08-02-2019, 11:43 AM   #15
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Is this tune sort of like putting the car back to how the early VIN cars were?

If not, would there be a way to do so? Aka stock parameters, but removing the SWT?
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      08-02-2019, 11:52 AM   #16
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How can we check if it was flashed and to see which “version” it’s running on?
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      08-03-2019, 10:46 PM   #17
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Quote:
Originally Posted by Pauleebe View Post
How can we check if it was flashed and to see which “version” it’s running on?
You can set up ISTA or esys and pull your flash version number. Our tool is capable of reading you stock flash version number as well.

Quote:
Originally Posted by Weiner0123 View Post
Do you think I could have been tricked about this "environmental recall" I noticed a significant decrease in power after I serviced it for the recall.. I ordered the vehicle in February so I got a really early production model... I wonder if I got duped


That is the "recall" that disabled the OBD flashing exploit we once have used in the past and also lowered the power (This seems to be the July Update) even further.
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      08-04-2019, 08:37 AM   #18
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I have one of the first m340i's to hit the US. My car was delivered in late March. It was released from the factory mid March. How can I check? Where are you guys located?
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      08-04-2019, 12:37 PM   #19
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Bummer, what is BMW afraid of? M340i would be too close to the real M in performance?
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      08-04-2019, 01:46 PM   #20
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Have you guys looked into different downpipes that are on the market for the last gen B58?

If so, do any look like they’ll fit the new car?
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      08-04-2019, 04:29 PM   #21
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Quote:
Originally Posted by MissionPerformance View Post
Quote:
Originally Posted by Pauleebe View Post
How can we check if it was flashed and to see which “version” it’s running on?
You can set up ISTA or esys and pull your flash version number. Our tool is capable of reading you stock flash version number as well.

Quote:
Originally Posted by Weiner0123 View Post
Do you think I could have been tricked about this "environmental recall" I noticed a significant decrease in power after I serviced it for the recall.. I ordered the vehicle in February so I got a really early production model... I wonder if I got duped


That is the "recall" that disabled the OBD flashing exploit we once have used in the past and also lowered the power (This seems to be the July Update) even further.
Ok I am getting a cable and Esys all set up. Do I need Launcher pro to check my stock flash version?
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      08-06-2019, 04:06 PM   #22
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When will this tune hit the market? Any idea what the price will be?
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