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Description
Aftermarket Assassins 2022-Up RZR Pro R 4 Cylinder AA ECU FlashAA ECU flash for 2022 Up RZR Pro R 4 Cylinder Models **Requires ECU to be sent in for programming** Works with all models including ones with Dynamix and or Evap models. Looking for the best most badass ECU tuning available for your RZR Pro R? AA's performance tunes are now available to gain horsepower and torque. Through our advanced ECU tuning we are able to modify parameters correctly to gain you the power needed. We are highly experienced in
- AA ECU flash for 2022-Up RZR Pro-R 4 Cylinder Models **Requires ECU to be sent in for programming**
- Works with all models including ones with Dynamix and/or Evap models.
- Looking for the best/most badass ECU tuning available for your RZR Pro-R? AA's performance tunes are now available to gain horsepower and torque. Through our advanced ECU tuning we are able to modify parameters correctly to gain you the power needed. We are highly experienced in tuning RZR's and this will show.
- The Pro R uses a new Bosch MG1 ECU. Currently no programmers like the PV3 are available and no ETA, so sending your ECU in for a bench flash is the only way to get a great tune.
- Big horsepower gains depending on the level of tune/modifications(see below tune descriptions for more details)
- Much quicker throttle response and power delivery giving a whole new feel to the vehicle
- Throttle by wire limiters disabled
- Fan on/off at 185 degrees Fahrenheit (Stock is 190) which is just above the thermostat opening temp. The progressive fan also ramps up in quicker to keep you running cooler than OEM.
- Speed limiter removed in low and high gears (Most will be able to run over 100mph!)
- More throttle % in low gear and reverse
- Rev limit at a safe 8800 RPM(stock is 8650). Ideal peak RPM is 8200-8500 with the flash, but 8800 is for ramp up overshoot/top speed.
- AA's wicked timing curve is safe for the fuel used, but we do a much better job of finding timing limits for ramp up/more torque. Many others simply focus on wide open throttle timing/fueling.
- AA's modified fuel curve will still get decent mileage cruising, but is corrected over the factory lean AFR when needed.
- Level 1 Tune: This tune can be run on a bone stock Pro-R on 91-93 octane fuel. This tune adds +10-11rwhp (15-16 crank horsepower) putting you at roughly 240 crank horsepower with just a flash! We would highly suggest our clutch kit with this tune to help with belt grip and gain additional low to mid range power. This tune can be run with an aftermarket exhaust without any issue, but our level 2 tune is the best option for aftermarket exhaust as it's slightly richer for more power.
- Level 2 Tune: This tune is developed for a Pro-R with aftermarket exhaust on 91-93 octane. It has just a bit more timing and a bit more fuel over level 1. This tune adds +16rwhp peak and a massive +19rwhp at 38mph (This is gaining roughly +25 crank horsepower) putting you at roughly 250 crank horsepower with just a flash and exhaust! We would highly suggest our clutch kit with this tune to help with belt grip and to help drive the extra power to the wheels. Due to how these motors/tuning works, this tune should work with about any aftermarket exhaust, but was tested and designed with our AA slip-on exhaust (header now available).
- If you're unsure if your Pro-R is an EVAP model or not, check your Emissions Control sticker located on the front driver's side frame rail above the master cylinder. See pictures for location.
- More tunes coming soon!
- The ECU is located behind the passenger (rear passenger if 4 seat) seat. Remove the top panel behind the seats, then remove the fabric panel to expose the ECU. Remove the torx bolts and ECU connectors.
- *** ECU MUST BE SENT IN FOR PROGRAMMING: Aftermarket Assassins, 2348 75th Ave, Osceola, WI 54020 ***
- Customer is responsible for shipping to AA, a shipping label is not included in the price
- Programming turnaround will vary, but is normally 1-2 days.
- Express ECU service for US main 48 states only. We'll send you a next day UPS label, and ship your ECU ONLY back via next day. All other pats will be shipped ground unless otherwise specified/selected during order checkout. Keep in mind we cannot guarantee same day programming or control UPS shipping times/delays. We will do everything possible to turn the ECU around as fast as possible.
- When the ECU arrives we'll read your stock file to determine if it's a EVAP model or standard, and we'll keep a file folder for your stock/tune files. We'll then flash with the correct AA tune.
- If you ever need to go back to the OEM tune we charge $95 which includes shipping back to you (shipping back for lower 48 US only). Please contact us if you need to go back to your OEM tune.
- MAKE SURE you insure your ECU for $700. AA is not responsible for shipping delays or lost ECU's. While more expensive over Priority Mail or Fedex, UPS has been the most reliable carrier in our experience.
- Why AA tunes over others? We have been tuning UTV's with CVT clutches for a long time, longer than almost anyone in our field going back to the 800 RZR. Tuning a CVT vehicle properly is not an easy task as you have so many variables at one time. We spend the time to wheel dyno(with actual UTV tires) correctly per modification, and have advanced ECU calibration and clutching knowledge to do so. Every change in horsepower can result in us changing clutching several times. We also develop most of our supporting mods so we know everything works correctly, and build parts to fit the vehicles needs. Lastly and honestly the most important; we then back up our results with real world data logging on local trails and our facility on 110 acres. It's this combination that truly makes the difference and why AA normally has a faster vehicle with the same or less rated tune horsepower. We left nothing on the table on the Pro R bolt-on parts, if others claim more power/gains for the same mods use caution in believing it!
- If you have any other needs in these tunes, or any concerns; please e-mail!
- Follow this link for instructions on locating/removing ecu
- Oh... and get ready for your RZR to flat out rip!
Shared Shipping of $18.99 to the Lower 48
jds 1/27/23
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4.2 ★★★★★
Based on 1356 reviews
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Product Reviews
★★★★★ 4
Valuable and Engaging Book but with Poor Timing - It's Our Fault, too.
Format: Kindle
If this is not enough reason for companies and individuals, with even a sliver of good judgement, to stop using all Meta products ASAP, I am not sure what is. Careless People is consistent with, builds upon and confirms what both the "Real Facebook Whistleblower," Frances Haugen (The Power of One) and Jeff Horwitz (Broken Code) have already brought us. While Wynn-Williams did not have the mountains of solid evidence that I believe made the work of Haugen and Horwitz more important, Careless People does provide an interesting perspective and more detail, not only on Meta's failures caused by the drive for more profit, but also the profound personality flaws of Meta's top people.
Assuming Careless People is reasonably accurate, Sarah Wynn-Williams is a very brave, resilient woman who wanted to do the right thing for Meta. She sacrificed way too much to help Meta when they did not deserve it. She offers a descriptive account of the difficulties she encountered in her role, including cases of bizarre sexual harassment and being sent to dangerous places all over the world. Even if these are exaggerated, the creativity she had in handling such situations makes the book so interesting to read. So many things went wrong for Wynn-Williams that would have caused many of us to give up, but she kept fighting (like Haugen).
While any book providing the reasons why we all need to stop using Meta products is good progress, I am disappointed that Wynn-Williams never mentions Haugen or Horwitz in the acknowledgments or gives them credit for paving the way. I would have expected this at a minimum, since those books have been out since 2021 and those authors have provided abundant proof of Meta's world-wide and excessive damage - 22,000 pages of such proof (see the "2021 facebook leak" on Wikipedia) . As of March 2025, Wynn-Williams had never reached out to either of those two, nor offered to collaborate with them. Jeff Horwitz has interviewed hundreds of former Meta employees. Wynn-Williams left facebook in 2017. So while she offers more detail about what was wrong at Meta, she seems too late. And without any credit to the others, especially Frances Haugen, who risked just as much, if not more than Wynn-Williams, it seems strange that Wynn-Williams would now finally come forward, suspiciously looking like an attempt to use their success towards her own. That part still needs to be answered.
The obvious lesson is that the 3 billion users of Meta products are "Careless," too. Nothing changes a company's behavior faster than when people stop using its products. For more than 6 years, since Roger McNamee published "Zucked: Waking Up to the Facebook Catastrophe" in 2019, we have known that Meta products suck the data out of users to sell it to anyone willing to pay for it. If you use any Meta products yourself and/or never bother to check that any website you are using, is sending your data to Meta with everything you click on (many tools are available to help you with this), but yet you claim to be an opponent of Trump, you have no one to blame but yourself. Meta gets away with the disastrous and horrific fallout of their carelessness BECAUSE WE LET THEM!
In fact, given what Wynn-Williams has brought us, along with the others before her, can't we simply conclude that it is POOR JUDGEMENT for any person or company to actually use Meta, Inc. products in 2025?
Meta is similar to the tobacco companies in the 70s who were not doing anything illegal (arguably still TBD for Meta). We all knew their products were dangerous, but so many continued to use them. Hopefully it will not take decades for people to change in this case. So unless there is some miraculously speedy and unprecedented exodus from Meta's user base, look for someone worse than Trump in the 2028 general election and 535 more of them in Congress now that the word is out that all you need are friends at Meta to get elected. Hang on because it's going to get much worse.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2025
★★★★★ 5
The modern Great Gatsby
Format: Hardcover
It is a very interesting (words) and depressing (reality) book to read. As a former Facebook employee, this book allows me to reflect my time at the company from a new angle, confirming some of the hypothesis I had, and shedding great insights into my experience. Thank you Sarah for sharing her story. We are all in this together.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Riveting, believable, depressing
Format: Kindle
Anyone who studies business recognizes the evolution. At the start, employees are comrades and customer's are wooed. Beyond a certain size, employees become line times and customers become commodities.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Fantastic series by a creative artist
Format: Paperback
Amulet, a graphic novel by Kazu Kibuishi (
,
), is geared towards the 9-12 age group. However, the novel will captivate anyone that begins to read it as they are swept along a moving story with beautiful illustrations.
Our young heroine Emily witnesses the death of her father in the opening pages of this novel. Emily, her mother, and her brother Nevin move into the home of their missing great grandfather. There are secrets lurking within the house, one that soon ensnares Emily's mom. She's dragged from the basement by a tentacle through an open door and Emily and Nevin must go on a rescue mission to another world.
This story captivates the reader from the beginning. The reader is compelled to feel for the characters of the story, from Emily witnessing the death of her father to watching her mom being dragged away by some unknown creature. Although this is only the first part of the series the reader gets a true sense of the characters, their feelings, and their emotions and is left hanging at the end of this book and wanting more.
What really sells the story are the illustrations as they capture and convey the moods of the characters and their surroundings. The drawings have a light airy quality to them, with a simple, but moody, color palette to show off the extensive use of shadows to convey emotions of the character in graphic detail. The reader is never left wanting or wondering what the characters are thinking, the colors clearly display what they feel--the age of the great-grandfather is written into the lines on his face, the fear and courage of Emily as she seeks to save her what's left of her family. As the story progresses a darker palette is used and we are left wanting the lighter colors to return. Something unique about the drawings is that when the story first begins the characters almost look undefined. While we can read their emotions they are merely shapes on a page. However, as the story progresses they gain more depth and emotion.
This novel is a must read. A strong young heroine, with monsters and robots as well, enough to keep any crowd entertained. The moving illustrations and compelling story make this a great read and the book is highly recommended for all ages.
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Reviewed in the United States on April 6, 2011
★★★★★ 5
A great book
Format: Paperback
My grandson loves these novels. He's 9 and I've purchased the 7th now 2 to go
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
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