Any better recommendations Than The Renntech EVM?
if I turn the car off in sport + or race mode, should the car remember that setting when I turn it back on?
if I turn the car off in sport + or race mode, should the car remember that setting when I turn it back on?
How quiet does it actually get? The car will naturally quiet a bit when the rpms drop after the initial warmup phase, on cold start.
As for the second question, it depends on which brand of module you have.
- If you have the ASR/Renntech module, then it should always keep the valves open, even after shutting it off, until you use the fob to change it back to stock configuration.
- If you have the Cete module, then it won't remember the setting after shutting down the vehicle, and you will have to select the exhaust mode pre-startup, every time. Someone said that the most recent version of this module does have a memory function, but I don't know if that's true or how recently that was actually implemented.
As for the second question, it depends on which brand of module you have.
- If you have the ASR/Renntech module, then it should always keep the valves open, even after shutting it off, until you use the fob to change it back to stock configuration.
- If you have the Cete module, then it won't remember the setting after shutting down the vehicle, and you will have to select the exhaust mode pre-startup, every time. Someone said that the most recent version of this module does have a memory function, but I don't know if that's true or how recently that was actually implemented.
The car itself will always go back to Comfort, after shutting it down, but your valves should stay in whichever mode you setup for your start mode. Did you program the start mode you wanted?
Auto translated instructions from the ASR page:
Last state: Press the "Sport Mode" button 5 times within 5 seconds.
Other modes: Press the button for the mode you want to learn as the start mode for about 10 seconds.
The flaps open and close 5 times to confirm successful programming of the start mode.
The Best of Mercedes & AMG
buying Renntech for about $605 shipping in the USA included, we are all overpaying for such a simple electronics.
Any suggestion for alternate?
So yes, the upcharge, and frankly the entire cost is an idiot tax

You can only save the last state of the ASR module.
It is normal for your GT to jump back from Sport + to Comfort (after 4 hours of inactivity).
The ASR flap control does not change that.
Best regards
Stenzel
I haven’t heard the car defaulting back to comfort after 4 hours of inactivity before, wouldn’t that defeat the purpose of the ASR if you wanted to start the car in sport +??
I haven’t heard the car defaulting back to comfort after 4 hours of inactivity before, wouldn’t that defeat the purpose of the ASR if you wanted to start the car in sport +??
There is no way to change the driving mode that the car starts in, sadly. You can can only use the module to choose whether or not the exhaust valves are wide open on startup. What you are selecting, when you change the module's startup mode, is the whether the exhaust valves are open, closed, or using stock settings, on startup.
The names of the modes for the remote/module (Sport, Comfort, Stock) are completely separate from the names of the car's driving modes (i*, Comfort, Sport, Sport +, Race).
There is no way to change the driving mode that the car starts in, sadly. You can can only use the module to choose whether or not the exhaust valves are wide open on startup. What you are selecting, when you change the module's startup mode, is the whether the exhaust valves are open, closed, or using stock settings, on startup.
The names of the modes for the remote/module (Sport, Comfort, Stock) are completely separate from the names of the car's driving modes (i*, Comfort, Sport, Sport +, Race).
Do you know if the exhaust memory settings stay the same when you put the car in manual mode?
if this is still available send me an email please
ERF.kwt@gmail.com
Thanks








