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    • Most powerful W205 C43 - AMR Performance pushes the 43 AMG M276 turbo V6 to 427 whp with RV3.1 tuning software

      AMR Performance just continues to push the M276 DELA 30 turbo V6 from Mercedes to new heights. This motor debuted as you know with C450 models but since then Mercedes revised the nomenclature and tuning with Mercedes-AMG 43 models. Check out what AMR Performance was able to get out of this W205 C43 AMG.


      They took it from roughly 300 wheel horsepower to 427 horsepower at the wheels with their latest RV3.1 software revision:


      Quote Originally Posted by AMR Performance
      Over the last 3-4 weeks, our engineering staff has been at work, tweaking and working out every little detail of the M276 ECU. Through numerous hours of dyno time and testing, we are exciting to release our RV3.1. Revision 3.1 is designed for the more of the spirited track driver. Those looking to really put down some power in a 1/4 mile.
      These are absolutely phenomenal gains and no other tuner is close.

      Keep in mind their older software revision back in 2016 on a C450 made 371 wheel horsepower and ran 12.3 @ 112 in the 1/4 mile. The result now should be easy 11's!

      Product page: http://shop.amrperformance.com/2018/...tware-release/

      #AMR #amrperformance

      This article was originally published in forum thread: Most powerful W205 C43 - AMR Performance pushes the 43 AMG M276 turbo V6 to 427 whp with RV3.1 tuning software started by Sticky View original post
      Comments 42 Comments
      1. micklej's Avatar
        micklej -
        Keep going and my dream of a c63 with 4-MATIC will come true. 4 months and my E63 arrives but I will always love the c63.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by micklej Click here to enlarge
        4 months and my E63 arrives b
        Basically the same thing.

        The E at leat gives you the better interior/exterior.

        The C would maybe just weigh 200 pounds less. Maybe.
      1. micklej's Avatar
        micklej -
        The C interior is surely due an upgrade after what Ive seen in the new A class. This new A class AMG predator I think they call it looks amazing. That hot hatch may leave my e63s behind off the line and in the 1/4. What do you think. Surely it's too good as will embarrass C63 owners who may expect their car to be quicker ?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by micklej Click here to enlarge
        Surely it's too good as will embarrass C63 owners who may expect their car to be quicker ?
        No. I think it's understood the A45 is quick due to all wheel drive and a DCT but the C63 is the brute with the V8.

        Personally I'd just make sure my C63 was tuned and to avoid running from a stop... or get an E63. Click here to enlarge
      1. micklej's Avatar
        micklej -
        I went for the e63s :-) Counting the days
      1. nbrigdan's Avatar
        nbrigdan -
        Almost 520 lb-ft to (all four?) wheels? This must fly off the line. Crazy power with just a tune!
      1. Cartman417's Avatar
        Cartman417 -
        So is it hitting 11s
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Cartman417 Click here to enlarge
        So is it hitting 11s
        Considering how close they were before this revision, easily.
      1. 11SecC43's Avatar
        11SecC43 -
        Preliminary Results RV 3.1 - don't look at the MPH on the 1/4 dragy. was in Mexico and needed to brake early. The other data should be enough to hold everyone over until I can get to the track. Unfortunately the track opens this Saturday, yet it is currently snowing outside.

        Attachment 56596
        Attachment 56597
      1. 11SecC43's Avatar
        11SecC43 -
        Attachment 56599

        Playing with tire pressure on one of the few warmer days we have had (mid 50's) I was able to get into the high 1.7's 60 foot with factory ContiProContact GX SSR Run flats. 18"

        Swapping to Michelin Pilot Sport 4S tires will not only shave 20 lbs of unsprung rotational weight but most likely provide better 60 foot times as well.
      1. funkmobster's Avatar
        funkmobster -
        Are there any independant dyno's out there of this AMR tune?
        How much boost is this tune running? What kind of fuel? Downpipes or not?

        They recently showed a dyno graph on their insta from a C43 that did a baseline of 287.2hp and that ended up at 426.2hp also.

        How do they get a 130hp delta while no other tuner has reached that.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by funkmobster Click here to enlarge
        Are there any independant dyno's out there of this AMR tune?
        How much boost is this tune running? What kind of fuel? Downpipes or not?

        They recently showed a dyno graph on their insta from a C43 that did a baseline of 287.2hp and that ended up at 426.2hp also.

        How do they get a 130hp delta while no other tuner has reached that.
        AMR is pretty damn good and has been pushing this platform while other tuners haven't.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 11SecC43 Click here to enlarge
        until I can get to the track. Unfortunately the track opens this Saturday, yet it is currently snowing outside.
        It's going to be interesting to see how the timeslips match up.
      1. 11SecC43's Avatar
        11SecC43 -
        93 octane.. Factory wheels and tires.

        As far as the other questions. I am not the tuner I cant answer that. You can always get the tune and head to a different dyno and see for yourself.

        I am very happy with my tune. 29 MPG on a 4 hour road trip in sport +, smooth as butter. No check engine lights.

        Keep in mind my car still has catalytic Converters. Just not the factory converters. My car is legal to be on the road in my state. The mechanic who installed my down pipes also inspects my vehicle.

        Feel free to interpret the data ive shared however you wish. I just wanted to throw the numbers out there as I was simply testing things out when I had a few warmer days over the past month.
      1. 11SecC43's Avatar
        11SecC43 -
        Not sure if everyone realizes this or not. RV 3.1 Raises Stall or Launch RPM to 3000

        I currently cannot launch at 3000 or the tires go up in smoke. I will have to wait and see what the traction is like once it warms up outside, over 60 degrees for a couple days in a row so that the ground is warm. If these tires will hook at 3000 RPM launches i will be impressed.

        Otherwise I may have to swap to the MPS4S to try and hook at these power levels.
      1. funkmobster's Avatar
        funkmobster -
        Don't get me wrong on this , i respect the information and the Dragy results you post but that still does not provide us basic info.

        Sticky i understand they have a good reputation , but since i see you question so many tuners on your forum , why just accept by what AMR tells us?

        Some time ago i asked them a few questions regarding their 43 AMG tune, they provide 0 information . The only thing they can tell me is that they have a promotion on their tune. I then told them i'm still waiting 4/5 months for my car to arrive . They replied i could buy their tune right away , enjoy the promotion and then when i get the car ,send them my ECU.
        Well turns out they always have that promotion when you ask them for information.

        If i want my 100K car tuned i like to talk to a tuner who provides me some basic information , not somebody who can only promote their latest deals or promotions.

        I come from a 335I and this would absolutely hold no truth in the 335I world , you know that Sticky. But since this is a Merc , its ok to just show a graph and thats it??

        And don't give me the , go find out yourself bull$#@!. I'm not going to send an ECU across the atlantic to find out what this is all about. The tuner should provide this info. There is absolutely no single tuner in Europe who wants to go higher then 460hp ( crank ) , but somehow these guys can pull it off.

        This is the perfect moment to get Eurocharged and AMR in here and let them batlle it out. I'm tired of all these fanboy crap on MBworld. Let your forum do the work and get to the root of this 43 AMG shadyness.

        I find it hard to believe when you check the graphs they post that they got 2 different cars with 2 different baselines , end up with the same 426.2 max hp.

        11SecC43 , you say you have no CEL's , then what with the guys on MBworld who get check CEL's because they are hitting torque limiters? According to them AMR has no clue how to resolve that .

        So no offence to you and i'm sure you are happy with your tune , but there is just no clear info available .
      1. 11SecC43's Avatar
        11SecC43 -
        That is your choice man. Enjoy the car stock.

        I am no professional. I just dropped in and joined the discussion thinking I might be able to help. Answer a few questions. The thread is about AMR RV 3.1, I posted about AMR RV 3.1.

        This is not an AMR vs XXX tuner thread, last time I checked.

        If your not happy with the information, so be it. Maybe someone else will appreciate it.

        Best of luck
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 11SecC43 Click here to enlarge
        Not sure if everyone realizes this or not. RV 3.1 Raises Stall or Launch RPM to 3000
        I had no idea. That's amazing.

        Not sure how they are getting the stall that high. Is this an MCT trans without a torque converter?
      1. 11SecC43's Avatar
        11SecC43 -
        And if it is any consolation.. i purchased a Dragy and a VBOX to log data.. along with the tune, and all of the other mods. I spent an awful lot of money to be able to post up those numbers to try and help someone out who might be interested to see what it would run.

        I am very happy with my Tune and no i do not work for AMR. I am not going to mention any other tuners as I want to keep the thread on discussion. I joined this forum thinking the maturity level here might be better than over at MBWorld and this community may show some respect and keep threads on topic and not turn every comment into a this tuner is better than that tuner. That is the reason I quit going to that forum all together.

        I am happy to provide my personal opinion from my experience. As i stated above I purchased several tools that allow me to data log which I have done and provided the best information that I could considering the weather and time of year.

        if that is not enough info for you, then i do not know what else to tell you. I cannot speak for AMR. They always answered all of my questions and not only did the return my calls but they have contacted me several times weeks and even a month after my tune to see how my car was doing and to see if i was satisfied. If that is not excellent customer service i do not know what else is.

        That is a short explanation of my personal experiences. use the information however you will.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by funkmobster Click here to enlarge
        Sticky i understand they have a good reputation , but since i see you question so many tuners on your forum , why just accept by what AMR tells us?
        Well, because AMR keeps posting revisions and pushing the platform. We have been here since their early tunes and we all get to see the evolution of new maps and revisions.

        What is hard to believe really?

        Click here to enlarge Originally Posted by funkmobster Click here to enlarge
        I find it hard to believe when you check the graphs they post that they got 2 different cars with 2 different baselines , end up with the same 426.2 max hp.
        Are you saying from two different tuners or the same tuner with two different cars?

        Getting to the same output level while starting at a different baseline is not odd at all. Especially if they have different software revisions to begin with or supporting mods.