Special Features (add-on for RV3.1)



Special Features

  • ON/OFF Start-up Burble Mode
  • Full Burble Mode
  • Free Rev Burble Mode in Park/Neutral
  • 2-Step Mode
  • Rolling 2-Step Mode
  • Burn Out Mode
  • Launch Control (boost off the line)


amr c43 tune

Upgrade your RV3.1 to an RV3.1s

We work hard to give you the highest quality, power and driving experience with our ECU Software Upgrades (tunes). Our engineering department and developers have been hard at work developing what we call our exclusive “Special Features” options. These engineered special features are another example of what separates us from the average “tuners”. Giving your vehicle the ability to do more than what the factory intended and what standard tuning can not offer.

To have the ability to purchase these new “Special Features“, must purchase our RV3.1 ECU Software Upgrade (tune) or already have our RV3.1 ECU Software Upgrade (tune).

As most already know, our RV3.1 has been out for while now, but if you do not know here are our specs:

  • Commanded Selective Drive
  • Optimized Torque Limiters
  • Optimized Air Sensors
  • Optimized Coolant Sensors
  • Improved Throttle Response
  • Improved Turbo Response
  • Smooth Power Delivery
  • Power On Demand
  • Speed Limiter Removed
  • OBD II Emissions Compliant
  • Safe, Proven & Tested Results
  • Horsepower: up to +130HP
  • Torque: up to +180TQ
  • 0-60 times: 3.3s – 3.4s (dragy verified)
  • Quarter Mile: 11.2-11.6et (full weight / 93 octane) (dragy verified / track verified / customer verified)
  • 1/4 Mile MPH: 119-122mph (full weight / 93 octane) (dragy verified / track verified / customer verified)


What are these Special Features?

  • ON/OFF Start-up Burble Mode
  • Full Burble Mode
  • Free Rev Burble Mode in Park/Neutral
  • 2-Step Mode
  • Rolling 2-Step Mode
  • Burn Out Mode
  • Launch Control (boost off the line)

What is ON/OFF Start-up Burble Mode?

  • ON/OFF Start-up Burble Mode allows you to start-up the vehicle and give a burble sound while coming down to idle. While sounding great, you do have the option of using it when you want. Works well at car meets when trying to draw attention 😉

What is Full Burble Mode?

  • Full Burble Mode is a lot of fun and enjoyable. Instead of just having “burble” at full throttle or heavy load, you can now have this feature when driving in low, mid or high RPM.

What is FREE REV Burble Mode in Neutral / Park?

  • This VERY special feature is quite unique and something that is definitely needed! When your vehicle is in park or neutral, you will notice the vehicles tachometer does not want to pass 3000rpm when free revving the engine at a standstill. This takes some of the enjoyment out of the vehicle especially when upgrading the exhaust and wanting to hear a little more grunt when revving. We have designed what we can “FREE REV” which includes the “BURBLE MODE” giving the vehicle the ability to “FREE REV” up to 5000-5500rpm!
Video of “FREE REV” with “BURBLE MODE”:

What is 2-Step Mode?

  • This special feature is quite unique. When in neutral or park, giving the vehicle full throttle (WOT) the factory slows the RPM down and limits the RPM at 3500/3800rpm. Making the vehicle stop at that point. Not being able to give a full “rev out” of the engine. Our 2-Step Mode extends this to 4500-4800rpm as well as giving the popular “2-Step” sound and function.

What is Rolling 2-Step Mode?

  • This special feature is a lot of fun. When driving the vehicle, you are able to put the vehicle into neutral, while rolling, full throttle the vehicle and it will initiate 2-Step Mode. Designed for those who like to show off and do that slow roll by.

What is Burn Out Mode?

  • Burn Out Mode allows the vehicle to do a full burn out. Smoking the tires and creating that fun rear wheel drive feel. You are able to hold the break and feather the throttle.

What is Launch Control (boost off the line)?

  • Launch Control/Boost off the line (BOTL) special feature is nothing new to us. We included this feature with our release of our RV3.1 ECU Software Upgrade. Gives you the ability to launch the vehicle in boost as suppose to flat punching the car. We are able to build torque and boost while the vehicle is at a stand still. Those who already have the upgrade have been enjoying your 3.3sec – 3.4sec 0-60 times.

Special Features Video:

  • We put together a quick simple video showing these special features. Video consist of a couple of customer vehicles C450 & C43 AMG.


Customer Reviews

Based on 3 reviews
Harman Sawhney

Wow. The entire AMR team is great and dang, do they know the C43/M276 platform well! Chris (Instagram: C_Chan450) and Matt (AMR_MForbes) are great people to deal with and very receptive to all the questions I had and still have as I continue to learn more and more about my car and performance. Chris has been in contact with me for over 2 years now and had reached out initially when my car was still leased instead of financed and taught me a lot of great things about the C43 platform. He was constantly reaching out to me and educating me about small things here and there. Being on the East Coast and Chris being on the West Coast, I am sure he doesn't ever sleep because I would ask him questions insanely late at night or extremely early in the morning and he somehow was always responding within the hour. I've put about 250 miles now on my RV3.1 with Special Features Mercedes AMG C43 and the car is absolutely transformed. Simply put, it's a rocket. Everything from the sounds it makes, to the throttle response to how the car shifts now is optimal. I drove to CT where AMR is stationed and Matt guided me every step of the way. He was very receptive to the questions I had regarding performances and finances. He was extremely patient with me and overall just a super personable guy. All in all they had my car tuned and ready to hit the road in about 2.5 hours which is insane. Major shout out to the entire AMR team, they are the best guys I could have asked to tune my car. I can't wait to put the hurt on some owners cars when the pull up at red lights, hahah! One happy customer here!

Raymond Dong
AMR is the best!

AMR is the best!!! Got my ECU and TCU tune through them and it transformed my into a beast. Definitely look for Chris Chan, he will take care of you and answer all your question before AND after your purchases. Very informative and knows his stuff, RECOMMEND 150%!!!

Cameron Laidler

Proud owner of the 2016 Mercedes c450 AMG!! I thought it was fast when I first drove it but quickly realized there is potential for a whole lot more. After months of reading reviews and researching tuning companies I made the decision to go with AMR performance. HANDS DOWN BEST CHOICE OUT THERE!!! I decided to go with the rv3.1 tune with special features. The car is so f-in fast it’s almost scary. You must go with the special features. The burble mode is addicting and turns heads everywhere I go. They are extremely helpful and willing to answer any questions you may have. I talked with Matt over the phone and with one of there ambassadors @c_chan450 multiple times to help make the best decision for me. Very pleased with my decision. Will definitely use them again in the future. Don’t waste your time or money anywhere else.