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How to Dyno Your S1000RR
How to Dyno Your S1000RR 30.10.2016

How to Diagnose and Dyno Test a BMW S1000RR Properly


– Chain at proper slack and lubricated
– Rear tire at 38-42PSI
Clean air filter, OEM, BMC race or Sprinter only
Bike not equipped with block off plates
– Proper fuel (higher is fine, lower is not) for current map.
– O2 sensors installed in midpipe if bung is applicable (more accurate reading than from tail)
– TPS throttle reset and is aligned to 0-100% (2010-2014 bikes)
– Use 5th gear on a Dynojet. Use 4th gear on a Mustang or eddy current style dyno (3500-14200 rpm)

Dyno Checklist:

– Wideband O2 sensor (there is no use in doing pulls without this and then being upset when you have no DATA!). Preferably a dual channel which means using two sensors. We have seen tons of bad sensors on dynos, even in house we have issues with ours from time to time.
– Coolant temp in the 180-200* range
– Air intake temp under 100* (easy on the 2015 model)
– Adequate fans to simulate on road airflow, 80+ MPH
– SAE/STD Corrected weather station


– Do 5-7 wide open pulls through the RPM range mentioned above with 1 minute rest in between pulls, follow this with 5 minutes of idling and 1 minute of riding at cruising speeds.
– After 5-7 pulls the peak power will be optimized and plateau. Shut bike off for 10 minutes and re-run 3 pulls.
– Do not expect good results from a “1-3 back to back run” dyno operator with no air fuel recording. There is no point in even strapping the bike. You will walk away wasting your time, money and you will be disappointed!
– The key is to have the bike hot, fluid and chain wise, but ambient air temps and coolant temps to not exceed values where compensation and power reducing settings come into play.

No additional power or showing a power loss over previous dyno baseline?


– Are you on the same machine, same gear, same conditions (similar), same day, same correction factor (SAE)? If not, disregard comparison.
– Are you in Slick mode/Race mode for these runs?
– Is your octane fit for the map (running 89 octane on a 93 octane file)? If not you will not see advantages of ignition restrictions and modifications. Try new tank of fuel, there are such things as a bad tank of premium pump gas. We also recommend and endorse adding Torco Accelerator to stabilize ignition on hot days or if you have poor fuel quality.
– Is the bikes intake air / coolant temp unrealistic? The best range before compensations occur is 185-200*F coolant throughout the pulls, and under 95*F intake air temp.
– Have you checked for pending or stored codes – mechanical faults, codes, old plugs, clogged filters, loose chain, low tire pressure?
– Adaptation, did you reset the mapping right on the dyno? The bike needs a moment for calibration to re-learn fuel, spark, quick shifter, throttle tables etc. 6-7 WOT runs with cool down usually sets this or until the bike stops making power. Shut it off, wait 15 minutes and re-run
– Do you have proper fans to simulate closed to the mile per hour in what gear you are running? 160 mph 5th gear pulls with a box fan, is not going to yield the proper result and the bike will lose power with each pull. Another waste of your time. We personally have two huge 48” shop fans, an exhaust fan to channel it through and four carpet drying style fans.
– Recommended: Have a GS-911 on hand to reset fuel, ignition, knock adaptations after a reflash to get the full benefit of the flash and no lingering trims from the stock tune.
– With all the above 100%, is the Air Fuel off the target (tuner dictated for your setup)? 2010-2014 bikes – 12.5-13.1 average 2015 bikes – 12.1-12.8 average. These bikes are not the same as the GSX-R that your dyno operator is used to seeing!

Common problems with these bikes:

– Poor octane — these bikes perform half as well on ACN91 octane as they do on 93+.
– Loose spark plugs or coils, we have near brand new bikes with coils that are half fallen out and skipping at low rpm.
– Spark plugs that are finger tight.
– K&N or other non-recommended air filters or air box mods sold by competitors that lose power. The best filter out there is the Sprinter filer, second best would be the BMC Race filter.
– Loose and non-lubed chain.
– Low rear tire pressure.
– Dyno operator not testing completely.
– Assuming that anything other than a FLAT 13.1 AFR is bad is the wrong train of thought. Old school dyno operators who have tuned bikes of yesteryear believe that AFR should be flat, that is not the case with these bikes.
– We have seen many bikes with poorly sealed air pump block off plates.
– Stuck exhaust valves.
– O2 sensor faults from a PC5/Bazazz uninstall forcing bike into unfavorable open loop tuning scenario.
– TPS fault from blotched PC5/Bazazz install causing limp mode and not full throttle opening.
– Ambient temps too hot. In hotter climates over 100*F and humid the bike will be dynoing with temperature compensation tables in place (which induces a power loss).

ALL of these listed troubleshooting and problem areas will divert the bike away from it’s target air fuel and produce less than favorable results. We hope that this can clear up some of the issues that we have seen from customers of ours. If you dyno the bike and do not have favorable results, please reach out to us. Don’t panic. Don’t think the bike is going to blow up. We will figure out the issue and help you along the way. Pulling the ECU and having a dealer flash it back to stock is not helping anyone. If you take the time to dyno your bike, please take the time to get DATA. Without the data we cannot help remotely.

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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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