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BrenTuning Engine Calibration/Tuning for 2020+ BMW S1000RR Flash
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BrenTuning Engine Calibration/Tuning for 2020+ BMW S1000RR Flash

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S1000RR’s have been restricted from the factory with the US models having worse restrictions than it’s European counterpart. Stage 1 was developed to remove these restrictions and unlock your S1000RR’s full potential.


  • Derestricted Throttle
  • Derestricted Exhaust Valve
  • RPM Limiter Raised
  • Better Fueling
  • Heat Management



  • Octane adjustments
  • Corrected cold/warm start idle
  • Re-calibrated timing
  • Lower max lambda, leaner high RPM Target
  • Higher RPM limit without throttle cut for roll racers
  • 30% faster up and downshifts
  • Includes our IAT extension kit and intake flapper removal kit
795   – Reward points
  • Manufacturer: Bren Tuning
  • $795.00

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MORE RESTRICTIONS REMOVED. The OEM throttle model has “soft” and “hard” limits.  The soft limits are where the 2020 S1000RR 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 FUELING FOR FULL TIME CLOSED LOOP AND WILL TARGET FOR PERFORMANCE (not just rideability in the //M+ flash).  The //M+ flash focuses on smooth and consistent rideability only.  It does not take peak performance into consideration.  That may sound silly given how much of an improvement the //M+ flash gives the 2020 S1000RR but on Stage 1 we decided to focus purely on performance while still taking rideability into account.  MANY hours, days, months have gone into developing the Stage 1 flash to make sure the bike is not only fast, but also reliable, smooth and consistent.  For safety we adjust the OEM wideband sensors to read +/- 35% at all times.

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 S1000RR 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 S1000RR 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. Faster and smoother shifting for the OEM quick shifter. We made what was already good, even better.

SPORT MODE LIMITERS ADJUSTED. Sport mode has been adjusted to offer full power with changed traction control settings for smoother riding.

SERVICE BULLETIN UPDATED SAFETY MAPS ADDED. Early S1000RR’s had incorrect ignition timing from the factory.  This was only at high RPM but it could result in knock (pre ignition of fuel in the combustion chamber).  As a result BMW issued a service bulletin and software update to rectify this issue.  We made sure to include this in our mapping while still maintaining a high level of performance and reliability.


Following the release of our wildly popular Stage 1 Flash we needed to sit down and really start to look at what the 2020 truly has to offer.  Anyone with our Stage 1 Flash will tell you how much it improved acceleration, got rid of the now infamous “dead spot”, fixed the OEM idle issues, and made the motorcycle feel better and more smooth overall.  Stage 2 has months of research and development behind it as well as datalogging and dyno testing.  The new 2020 S1000RR is familiar to us but also completely changed.  To that end we were able define new ECU strategies that we can help make this already impressive bike even more impressive.   Stage 2 is a feature map making the bike more consistent, more reliable, and smoother and combined with our IAT Relocation and flap delete kit results in a much improved motorcycle!

Octane adjustments for auto adaptation on pump gas for US and international fuels 91-94 octane 95-100 RON. Utilizing the multiple ignition maps and factory widebands, we are able to increase performance based on knock detection. This also means if you have some bad fuel, the motorcycle will still compensate and put the bike into safety mapping just like the OEM ECU would. This ensures your bike stays consistent and reliable.

Corrected cold/warm start idle to 2015 RR levels, finer tuning beyond Stage 1. Stage 1 did a lot to correct the startup issues the 2020 S1000RR was having. Stage 2 goes a step further. There is no longer a high idle that transitions into a lower idle. The idle remains static without any lean popping, idle hunting or stalling (see comparison video below).

Re-calibrated timing for higher octanes to make use of race fuels on same tune. The 2020 S1000RR has multiple ignition maps and based on knock feedback, the bike will start to adjust to different timing maps. This means if you have a high octane fuel in the bike or race fuel and knock isn’t present, the bike will transition to a more aggressive timing map automatically. A more aggressive timing map will safely allow the bike to make more power. No more flashing every time you want to use race gas although we can still provide specific race fuel mapping designed to be used on ONLY race gas. This feature is most beneficial when you are on the track or street and don’t have your handheld available to swap maps.

Lower max lambda, leaner high RPM Target for a few more horsepower. AFR (air/fuel ratio) adjustments have been made to Stage 2 to be more aggressive to get a little more power out of the bike while remaining safe.

Higher RPM limit without throttle cut for roll racers (optional) With Stage 2 we are able to raise the RPM limiter to 15,000 RPM while also making sure the raised RPM event is not stored in the ECU. We have also adjusted the spark and fuel cuts so when the rev limit is hit, the bike doesn’t feel like you slammed on the brakes, it’s more gentle now.

30% faster up and downshifts over Stage 1 and now allows the use of fast shift sensor products on the market if desired.

    • Poids
      2 lbs
    • Réf.
  • Manufacturer
    Bren Tuning
  • Model
    Stage 1 Flash, Stage 2 w/ IAT Relocation Kit, Stage 2 w/ Handheld

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Please see our International Orders page for orders shipping outside the US. We have worked with our shipping companies and integrated their shipping prices with our website for customer comfort.

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We understand that when you make an order, you want your gear as quickly as possible and we will do our best to make that happen! Most of the items we sell will ship quickly and be at your door fast. We work closely with our vendors in order to have the product shipped directly to you from their warehouse if that means you will get the product faster.

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Typically packages will be left at your door and do not require a signature. Sometimes we will ship an item vendor direct and those vendors may require a signature on their shipments. If you absolutely need one way or the other, please contact Customer Service before placing your order.

Backorders does typically take back orders, based on the availability of the item. 

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If an item arrives visibly damaged, please contact us immediately. Claims are handled through the shipping carrier, but we will assist customers with these claims to the best of our ability.

We accept the following payment methods:

Accepted payment methods

You can also use PayPal Later and Affirm at the checkout.


1. Returned products must be in new, unused condition and include the original box and/or packaging with all tags included.

2. Once your return is received and inspected by MotoKarMax (usually within 48-72 hours of receiving), your refund will be processed and a credit will be applied to your credit card or original payment method. Please note that depending on your credit card company, it may take an additional 2-10 business days after your credit is applied for it to be posted to your account.

3. For wire transfer payments, all refunds will be issued in the form of a gift card.

4. You are responsible for all shipping costs associated with getting your order back to us.

5. Please do not abuse this policy by ordering multiple (more than 2) of the same or similar item with the intention of returning the majority of your order. Please contact us if you are unsure of sizing or application for any items prior to placing your order and we will be happy to help you narrow it down!

6. See below for instructions on where/how to get your return order back to us. Items should not be shipped back to the manufacturer; all returns need an RMA (Return Merchandise Authorization) number and will need to be returned to us.

Return Shipping Options

1. For customers in the contiguous 48 U.S. States, 2to4wheels provides the option of printing out a pre-paid UPS/ Fedex shipping label for a fee (calculated later). This fee will be deducted from your total refund amount.

2. For customers in any location, you have the option of using the carrier of your choice to return your order to us. We recommend shipping with a method which includes tracking and insurance for your return shipment.

3. All shipments must be made prepaid; packages shipped COD will be rejected. Any Refused, Undelivered, or Abandoned package will be subject to a $10 Service Fee.


1. Need to make an exchange? After you process your return, simply place a new order for the exchange merchandise. That means you'll claim the inventory and get your new gear fast!

2. You are still responsible for return shipping costs on your original order back to us.

Order Cancellation / Modifications

1. If you change your mind, act quickly and let us know! 

Used or Damaged Merchandise

1. Any merchandise which has been "taken out for a ride" is considered used and cannot be returned. We encourage you to walk on your carpet in your boots and to try your motorcycle helmet on indoors before heading out on the bike.

2. Any merchandise or parts which shows signs of use (wear, bugs, dirt, smell, pet hair, scuffing, mounting, etc) or otherwise is in a condition other than it was received cannot be returned.

3. Craigslist, eBay, Facebook Marketplace and other online forums are excellent resources if you have a used item you do not want that can no longer be returned back to us.

Apparel and Helmets

1. Apparel items must be packed in their original garment bag (or equivalent plastic bag protection) and include all original tags. The plastic bag protects the item from the cardboard. Items packaged without this protection most likely will arrive scuffed and will be returned to the customer.

2. Helmets must be shipped back as they were received in their original helmet bag, box and include all original paperwork and accessories.

3. Un-used items that are returned with missing or damaged packaging, tags, components, or hangers may be returned to the customer or subject to an additional processing fee of up to 25-50% of the merchandise cost based on the availability of those missing or damaged components.

Electronics, Hard Parts, Tools, Tires

1. Any electronic which has been removed from packaging or manufacturer seal broken is non-returnable.

2. Any part which has been installed or shows signs of attempting to be installed on a vehicle is non-returnable.

3. Any Tool or Chemical that has been opened or seal broken is non-returnable.

4. Open box items for which the packaging has been destroyed are not returnable.

International Returns

1. International shipments should be marked as a "Merchandise Return" with a carrier that does not levy brokerage fees. Customer is responsible for any applicable brokerage or customs charges.

2. Any items shipped COD or having additional brokerage fees that are charged to us upon delivery will be rejected.


1. Each manufacturer has its own warranty policy. MotoKarMax will assist customers with their warranty; however MotoKarMax does not provide any direct warranty on any item sold.

Warranty Returns

1. Most manufacturers offer an additional warranty period which covers against merchandise defects. To determine warranty requirements for a specific item, please contact the manufacturer or contact us for assistance.

2. Please note warranty processing may take 4-8 weeks and will be subject to the individual manufacturer's policies and discretion. Manufacturer warranties do not cover defects determined to be caused by normal wear or due to customer negligence.

Damaged Items

1. Please let us know ASAP if any items on your order arrive damaged. Please keep all original shipping containers and take pictures if possible. Damaged item claims are handled through the shipping carrier. We will assist our customers in these claims. We only ask that customers be patient as sometimes this process can take longer than any of us would like!

Returns Process

You can request a return authorization number (RMA#) online at or you may also initiate a return by calling us.

Step 1: Click "Login / Register" or "My Account" (if you are already logged in) at the top of the web page. Once you are within the "My Account" area of the website, click on "Order History" on the left-hand side of the page and find the order in question and click "View".

Step 2: Select the item(s) you would like to return from your order and be sure to choose the reason for returning each item.

Step 3: Select your return shipping method and follow instructions.

Step 4: Please print your Return Authorization form and include it with each shipment back to us. You have 7 days from the day the RMA is issued to return your merchandise so please be sure to print and ship at your earliest convenience. Please do not tape anything to the original product packaging! We need to get all products (and their packaging!) back in new condition. Place all merchandise in a shipping box; you may use the original shipping container. However, please DO NOT use the manufacturer's product box as the shipping container. It will arrive damaged and the package will be rejected by our returns department. Returns should be shipped to the following address unless otherwise noted on your return authorization instructions:

MotoKarMax LLC
Attn: Returns (RMA# XXXX)
41000 Woodward Ave
Suite 350 East
Bloomfield Hills, MI 48304

Please retain your return tracking information. We are not responsible for packages lost during return shipment. You will receive a confirmation email from us when your return is processed which will include the full details of refund credited.

  • Fitment Type
    Vehicle Specific
Make Model Year Engine
BMW S1000RR 2020 999 cc
BMW S1000RR 2021 999 cc
BMW S1000RR 2022 999 cc
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