2021 BMW M1000RR Diagnostic Tool w/ Stage 1



Unlock Your M1000RR’s True Potential

Add Handheld Tuner? (Required)

Add IAT Kit

Add Adaptive E85 Fuel File

Add Sprint Filter (+4hp)

Add BrenTuning Moto Mirror Block-Offs

Add a Brentuning Moto T-Shirt

Product Description




  • Full-Time Closed Loop (Self-Tuning Feature!)
  • Engine Startup
  • More Derestriction
  • Ignition
  • Adaptive Map Control
  • Quick Shifter
  • EGT Correction
  • Intake Flaps
  • Launch Control
  • Traction Control


FULL-TIME CLOSED LOOP TUNING. This may be the most important feature with Stage 1 and only we can offer it. With the addition of a full OEM wideband system that was first seen on a motorcycle with the K67 S1000RR, the M1000RR has followed suit and integrated this new technology. With the newly added widebands and ECU, the new M1000RR is capable of tuning itself to a targeted lambda value. The M1000RR will constantly change the AFR (air/fuel ratio) based on the wideband readings. You will always have a flawless fuel mixture with Stage 1. Elevation, temperature, even exhaust changes with Stage 1 mean NO ADDITIONAL TUNING OR DYNO TIME IS NEEDED additional tuning or dyno time is needed! STAGE 1 MAKES DYNO TUNING A THING OF THE PAST.

ENGINE STARTUP. The M1000RR seems to have even more difficulty with cold and warm starts than even the S1000RR. Our M+ flash fixed this issue mostly but still had a couple instances where the bike wouldn’t behave well when starting. We developed an entirely new strategy in Stage 1. If you’ve had our M+ flash before, you’ll instantly notice a differences in Stage 1. Testing for a couple months, and with multiple bikes, we have had no issues at all with starting.

MORE RESTRICTIONS REMOVED. The OEM throttle model has “soft” and “hard” limits.  The soft limits are where the 2020 M1000RR will start to close the throttle and limit torque by itself at high speed or high RPM.  We removed the top speed governor and made sure the throttle or torque isn’t limited.

MODIFIED IGNITION FOR PERFORMANCE ON VARIOUS OCTANES.  The //M+ flash did not touch any of the stock ignition tables.  Stage 1 optimizes the ignition tables for performance and reliability.  The M1000RR has multiple timing tables.  Depending on fuel quality, the bike will choose more aggressive timing tables or less aggressive (if knock is present).

MR12 HORSEPOWER AND OTHER 100 OCTANE FUELING MAPS INCLUDED. One flash does it all.  Because of the adaptive ECU and OEM wideband sensors, the M1000RR is able to switch between fuels without flashing to a new map.  This means if you want to run regular 93 pump gas then switch to MR12, you do not have to change maps.  The adaptive ECU and our Stage 1 flash will account for the new fuel and change automatically to optimize performance.  The only thing the user has to do is pump the gas in the bike and ride.

MODIFIED QUICK SHIFTER TIMES FOR UP/DOWN SHIFTING “KILL” TIMES. 30% faster “kill” times and much smoother shifting for the OEM quick shifter. We made what was already good, even better.

MODIFIED EXHAUST GAS TEMPERATURE (EGT) CORRECTION MAPS. These maps typically limit performance but with our testing we are able to gain more power and keep the bike just as reliable with more consistency during racing scenarios.

INTAKE FLAPPERS. We command them open from startup to shutdown. You’ll always get maximum airflow to your engine, and with our optional IAT kit (SEE BELOW) standing start performance in greatly increased.

LAUNCH CONTROL. Optimized to be more aggressive when you need to get that holeshot.

TRACTION CONTROL. A tire from Dunlop has a slightly different wheel radius than a wheel from Pirelli, even if both read the same sizes. Wheel radiuses will vary tire to tire and is a fixed value with the OEM TC. This is something that needs to be correct for the track and makes a huge difference with how the bike behaves. We added wheel radius adaptation that will adjust the TC to your tire. (In the OEM configuration this is a fixed value that can only be adjusted with race tools)


As many of our customers know, our IAT (Intake Air Temperature) Kit for the 10-19 BMW S1000RR has been extremely popular and shows noticeable gains on the street and even dyno.  This IAT strategy was first used by Dinan (BMW) in the 1990’s.  However, the 2020+ S1000RR / M1000RR included some serious changes and required a new strategy for this project.

New for 2020 is our Intake Flapper Removal Kit.  The 2020+ S1000RR / M1000RR now has flappers in the intake tract, these flappers only allow a small amount of air to pass through to the engine until 6000 RPM when the flappers finally open.  When the flaps aren’t open it allows for stagnant, hot air to raise IAT readings and block air flow to the engine.  Hot air and low airflow equals less power.  This is why we developed our IAT kit years ago. The intake flappers are a new addition to the bike and we can command them open at all times with our flash.

The new airbox “flapper” design was made to reduce engine noise at low RPM’s.  Instead of the previous foam restrictor that we saw in the 17-19 models, the 2020 S1000RR almost completely closes off the airbox in certain scenarios.  This lack of airflow leads to very high intake temperatures.  The ECU’s strategy is designed around this “heat soak”.  Timing retard is based on a “per gear” and “per RPM” strategy and will not taper off until higher gears due to the airflow and RPM needed to open the flappers.  This is vastly different than previous years and more similar to the BMW GS1200’s (which also benefited greatly from this kind of relocation).  The first half of the throttle angles (0-50% throttle, commanded) and first three gears are heavily timing retarded on the stock calibration.  This is due to hot and stagnant air that sits in the airbox while the flappers stay closed.  The design of the OEM flapper servo creates an unnecessary bottleneck of airflow inside the airbox at higher speeds.  This distributes air to the inner most cylinders, negating performance and the maximum “ram air” effect the factory airbox can provide.

Our first kits have been installed and successfully tested with positive reviews on the street and track!  The bike doesn’t feel as lazy from a dead stop anymore.  The induction noise is superb after the installation/removal and compliments the essence of what a S1000RR / M1000RR should sound like; a true race bike.  The IAT Kit allows for consistent power at all RPMs and gears instead of waiting for higher gears to get additional, rated power.  During our testing on the dyno and per gear / per RPM datalogging, we found many delays in the factory ignition to combat the heat soak the factory airbox flappers create.  With our flapper software and relocated IAT sensor, the bike reacted sharp from a dead stop and in lower gears / speeds (pre-6000 RPM cruising) without knock detection.

Getting a true ambient temperature from the front of the bike is much better than getting temperature readings from its original location on top of the engine with the flapper doors shut.  Idling at the starting line, pits or at a street light on a 100 degree day will put the bike into a temperature protect mode and pull power out to “save itself” until the IAT sensor reads accurate ambient air temp once the bike starts moving.  True ambient temps help the bike deliver more power and stay consistent in racing conditions.  We are not tricking the sensor but simply allowing it to read proper temperatures of the outside air.



      • Relocates the Intake Air Temp (IAT) sensor and opens the airbox “flappers” at all times.
      • Moves the IAT sensor from the factory location near the cylinder head to the front of the bike to get a true ambient reading.
      • Opens factory airbox flappers to allow fresh air to enter the airbox at any speed, RPM or gear.
      • A true ambient reading means more power but also means consistent power.
      • Noticeable improvements in stop-and-go traffic, starting a race from a stop and exiting the pit.
      • Even distribution of air to all cylinders without any cylinder bias.
      • More air to the engine with plastic flappers removed.
      • No downside and dyno proven gains across the entire powerband.

Dyno Testing


Green = Stage 1 with E85 Pump Fuel – 208whp / 90wtq
Blue = Stage 1 with 93 Pump Gas – 199whp / 87wtq
Red = Baseline with 93 Pump Gas – 191whp / 85wtq

Keep in mind this is a FACTORY STOCK M1000RR. NO MODS other than the flash have been added to this bike. With the usual bolt-ons this number will go up and up. With a completely stock bike and factory exhaust we made 208whp with E85 pump gas. That’s almost 20whp and 5wtq over stock with nothing but a flash.

**All runs performed same day, back to back on our in-house DynoJet**

**Testing performed with 93 octane pump gas. Usage of a lower octane will yield smaller power gains.**

Affirm Financing



Thoroughly tested by our own engineers, not just for its function but also durability.  We purposefully dropped this thing about 100 times just to make sure if you accidentally dropped it, it would still be a usable device.

So why buy it when you can just send in your ECU for flashing and spend less? Let’s see the breakdown.

NO DOWNTIME – No need to send in your ECU or remove it from your bike at all.  You order the handheld, it get’s delivered to you, you flash your bike.  You never miss a day of riding and no effort removing the ECU.

STORE MULTIPLE MAPS – When you send in your ECU, you only get one map.  You might be thinking, “why would I need more than one map?”.  Storing multiple maps means you’re able to flash for different fuels.  If you’re a serious track competitor, we can work with you to get you different mapping for different tracks.  If, for example, you’re add an exhaust to your stock bike, we can email you a file that takes the new exhaust into account with the changes you need to optimize your bike’s new modifications.

GO BACK TO STOCK ANYTIME – Not only can you store multiple race maps, you can also flash the original, stock file back into the bike at any time and for any reason.


Additional information

Weight 15 lbs
Dimensions 15 × 15 × 15 in


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  • “ Bike is running awesome and no out of the ordinary popping under load during downshifts at high rpm. My hats off to your team for making me feel like I have a personal tuner at my disposal. Really appreciate the quick turnaround to get me straight. I can definitely feel the extra power! ”

    Andy Young - Maryland Aug 28, 2018
  • “ This product is amazing.  I feel like I have a better version of my bike.  Like it should have come this way.  The throttle smoothness and even power band make it a joy to ride.  I no longer feel as if I'm riding a wild bronco lol. Thank you again, I didn't think that a L-twin could behave this well.  Also, your customer service is the best.  I could always reach you by email or phone.  I will tell everyone I know about this fantastic addition.  Keep up the great work, guys! ”

    Dan Martinez May 01, 2017
  • “ I have a 2015 S1000RR and was extremely skeptical when I heard about BrenTuning and the power they got out of an ECU flash.  After speaking with the team at BrenTuning, all my hesitations were put to rest and I haven't stop winning first place trophies since! BELIEVE THE HYPE! ”

    Troy Gleason - California Jul 10, 2016
  • “ Bren and his team did an awesome job on my bmw s1000rr. Went from 179rwhp an 83 rwtq to 206 rwhp and 93rwtq. Customer service was great and I highly recommend them for any of y'all that want to make that power!! ”

    Paul Jackson - Texas Jul 10, 2016
  • “ Purchased the tune for my 2015 BMW S1000RR. Was skeptical at first and initially had a bunch of questions. Chris was very patient with me and answered them all. Had some problems after receiving my ecu back and Chris was very helpful in getting all my issues worked out. Bike runs fantastic. Definitely worth it. Thank you again guys for dealing with my questions and taking care of everything before and after the purchase. Fantastic customer service. ”

    Cody Hunsucker - Tennessee Jul 10, 2016
  • “ After doing some research it was obvious that Brentuning was the best option for tuning of my S1000RR. I wont go into details but after multiple overnighting of parts to me at no additional charge, I'm really impressed and satisfied with the end result and I haven't even tried out my race fuel tune yet! To top if off I received a random care package of goodies from Chris today. The customer service at Brentuning is probably the best I've received from any business I've dealt with. Their email response times are unreal as well, lol. Literally sometimes instantly, kinda weird. lol. I would recommend any and everyone to Brentuning for your S1000RR tuning solution. If anyone has any questions or are hesitant before purchasing, feel free to shoot me a message and I'll help / assist / give you a more detailed opinion on my experience as well. ”

    Trey Hull - Texas Jul 10, 2016
  • “ I have the Bren Tuning ECU flash on my 2015 BMW S1000RR and it is unbelievable how fast this bike is. This tune is the best thing I got for my bikes. I have also did the Bren Tune for my 2014 BMW S1000r for which it just made this bike really nice. Bren Tuning is the best. ”

    Darnell Edwards - Maryland Jul 10, 2016
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