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Have you guys ever tried to see what the actual HP gauge on the 2019 c43 actually goes up to in your car? When I floor mine in sport+ auto, the max I could get it to display the HP was about 373. I've never been able to actually hit the 385 number. Has anyone actually gotten it to reach this number?
Have you guys ever tried to see what the actual HP gauge on the 2019 c43 actually goes up to in your car? When I floor mine in sport+ auto, the max I could get it to display the HP was about 373. I've never been able to actually hit the 385 number. Has anyone actually gotten it to reach this number?
It makes 385@6500 RPMs .. are you in that power band ?
Have you guys ever tried to see what the actual HP gauge on the 2019 c43 actually goes up to in your car? When I floor mine in sport+ auto, the max I could get it to display the HP was about 373. I've never been able to actually hit the 385 number. Has anyone actually gotten it to reach this number?
this seems completely normal btw. or at least in my experience. (no altitude here either.)
It makes 385@6500 RPMs .. are you in that power band ?
Interesting, I'll manual mode to see if I can get 385, but based on what I am seeing, it is almost exclusively less than 350 hp in all the RPMs involved in automatic driving with the sport + mode.
I was about to post the same question. First time Mercedes owner and just got a 19 C43 sedan. Typically under full acceleration I get a max HP number of around 369 to 374. I got to 380 once, so I was wondering what gear I would see 385.... Or if I would have to wait until it got a little colder, or if the car needed to be broken in more and a few more miles. Just weird, it doesn't display the max HP claimed. When I had a BMW with the MPPK, it would show a little over 320 (not an exact number like the MB gauge).... but at least it would get to or over perform the claim... at least making me feel better.
If that were the case, why would it not show exactly 385?
I'm sure there's some long, complex German explanation if you asked the correct person in the plant. MB is notorious for under-rating their HP claims as well, so even if it is pegged, showing 385, it's still not technically correct
I understand where you're coming from, but accepted this gauge is more of a fun gimmick than anything.
Yes more fun than anything..... Just the Feel Good Factor would be turned to "11" instead of "9" if it showed 385 when fully pushed..... And yes that gauge is likely not accurate.
Have you guys ever tried to see what the actual HP gauge on the 2019 c43 actually goes up to in your car? When I floor mine in sport+ auto, the max I could get it to display the HP was about 373. I've never been able to actually hit the 385 number. Has anyone actually gotten it to reach this number?
Funny, I tried this yesterday because I remember seeing this thread. I was able to hit 373 as well after multiple attempts - I believe when flooring it from 3rd to 4th gear in my Individual setting that has all the same Sport+/Dynamic settings minus the stiffened suspension. I’m curious to see if it will change after modifications + tune and reflect the increased output. 🤔
Funny, I tried this yesterday because I remember seeing this thread. I was able to hit 373 as well after multiple attempts - I believe when flooring it from 3rd to 4th gear in my Individual setting that has all the same Sport+/Dynamic settings minus the stiffened suspension. I’m curious to see if it will change after modifications + tune and reflect the increased output. 🤔
That is interesting that the sport + automatic setting gets us consistently to 373. I really doubt a person could paddle shift accurately enough to go high enough in RPM to hit 385 (at least consistently)
These are from my GLC43. I took video and then screen shotted the highest numbers. What's interesting is that the 362hp is near denver at around 5,500 feet. The 342 is near my house which is at 8,500 feet. Both full power, pedal to the floor through at least 4th gear, max registered. Looks to me like these gauges might actually be accurate. I am scheduling a dyno soon and will compare.
HP number that you see is just an estimated value. The only way to know the exact HP is to measure the torque AND speed, and as far as I know there is no torque transducer on crank shaft.
HP number that you see is just an estimated value. The only way to know the exact HP is to measure the torque AND speed, and as far as I know there is no torque transducer on crank shaft.
Yea I have tried to google how those gauges actually work and did not find anything. One thing that makes we think they might be legit is that you can buy a power meter for bicycles that measure power at the crank that are not that expensive. They are very accurate.
2019 C43 AMG Coupe, Mountune Ford Focus RS, Range Rover Sport
I think the gauges are immaterial really if you have a tune as they won't go above the stock HP/Nm max values anyway.
Out of interest, is anyone out there with a 19 FL model finding that it doesn't have a limiter? I thought they were all limited to 155mph, including Europe. I don't have a flash tune rather a JB4 which doesn't remove the limiter but I managed 175mph the other week.......and before anyone suggests otherwise, I don't have a faulty speedo! Lol!
I have a 19 and i haven't done a top speed run, I will have to see, you have me intrigued and excited. When I asked the dealer if it was limited to 130 or 155mph he didn't know....
The gauges work based on fuel and air consumption, so if the car goes to full boost and full fuel demand, it will show the equivalent theoretical HP number. When mine blew the intercooler (causing the coolant to spill into the charge air and rendering it useless), the gauge would only show 270 hp. So even though the car didn’t turn on the CEL, I could see something was wrong.
When you tune the car however, the maps for the HP gauge doesn’t match up to the ECU map, and therefore won’t show the correct horsepower reading anymore.
If you don’t get the full 390 Hp, it is most likely because the car can’t get enough air in as that is generally the biggest restriction. If it was because of a malfunction (as in my case) it would probably show a much lower number. Is it particularly hot where you live or perhaps high altitude?
The gauges work based on fuel and air consumption, so if the car goes to full boost and full fuel demand, it will show the equivalent theoretical HP number. When mine blew the intercooler (causing the coolant to spill into the charge air and rendering it useless), the gauge would only show 270 hp. So even though the car didn’t turn on the CEL, I could see something was wrong.
When you tune the car however, the maps for the HP gauge doesn’t match up to the ECU map, and therefore won’t show the correct horsepower reading anymore.
If you don’t get the full 390 Hp, it is most likely because the car can’t get enough air in as that is generally the biggest restriction. If it was because of a malfunction (as in my case) it would probably show a much lower number. Is it particularly hot where you live or perhaps high altitude?
On BMWs you can re program the HP and torque gauges to show new higher values after remapping, shame we can't do that.
Here is an interesting observation. When I floor my car it ALWAYS goes to 270 kW on the power gauge (for some reason it can only show kW in Europe) but yesterday we were driving through Switzerland and were passins through a mountain pass at 2500 m, and the car would only go to 240 kW. Coming down to lower height driving into Germany, it was right back to 270 kW. So this confirms that it does have some method to the way it calculates the power and it isn’t just a dumb scale based on speeder position.
Here is an interesting observation. When I floor my car it ALWAYS goes to 270 kW on the power gauge (for some reason it can only show kW in Europe) but yesterday we were driving through Switzerland and were passins through a mountain pass at 2500 m, and the car would only go to 240 kW. Coming down to lower height driving into Germany, it was right back to 270 kW. So this confirms that it does have some method to the way it calculates the power and it isn’t just a dumb scale based on speeder position.
It doesn't mean anything in terms of power calculation method. In higher altitudes air density is lower so engine can't breath as well to burn fuel, thus the lower output HP. All in all the number you see is not the actual measured output HP or torque. They are all calculated numbers.
It doesn't mean anything in terms of power calculation method. In higher altitudes air density is lower so engine can't breath as well to burn fuel, thus the lower output HP. All in all the number you see is not the actual measured output HP or torque. They are all calculated numbers.
Dude - I’m a mechanical engineer specialized in engines, so I know why it does what it does... and if you read my post properly, you would see that I write “how it calculates” the numbers. It was just to say, that there is more than just a simple table that it selects the power from. But thanks for more or less just duplicating what I wrote...
09-12-2019, 08:18 PM
