How to raise governed speed
Junior Member
Joined: Oct 2018
Posts: 55
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From: Maryland USA
2024 GT 55
Likewise, I have often wondered if the dealer could/would do this if I replaced the H speed-rated stock RFTs with Y speed-rated Michelin Pilot Sports. Any experience or advice? I don't want to get into a tune, either...
Super Member
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C43
To answer the OP’s question: I am not aware of a way to do this without a tune.
Junior Member
Joined: Oct 2018
Posts: 55
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From: Maryland USA
2024 GT 55
Just to clarify - my question is about raising the governed speed (which, as i understand it, is set based on OEM tires' speed rating and ability), not increasing horsepower output. Not sure if the OP is asking for the same thing that I am...
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2019 C63CS
Correct, the top speed governor can only be raised with a tune. It's essentially baked into the ECU and can't be changed via coding by a dealership. Only a tuner or the factory can change it. The question of horsepower is a different one. Obviously there's a physical limit of how fast the car can go with stock power, but it's higher than the governor is set.
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Junior Member
Joined: Oct 2018
Posts: 55
Likes: 8
From: Maryland USA
2024 GT 55
Correct, the top speed governor can only be raised with a tune. It's essentially baked into the ECU and can't be changed via coding by a dealership. Only a tuner or the factory can change it. The question of horsepower is a different one. Obviously there's a physical limit of how fast the car can go with stock power, but it's higher than the governor is set.
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016 c450 AMG
A number of years ago I drove an e39 M5..You could circumvent the 150 mph cutoff by using the cruise control to accelerate thru it..My S4 Audi had an APR stage 2 tune that bypassed it, but other than a tuner coding it out, Im not aware of any way to do it on these particular cars
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vMax can be safely raised to 250km/h without any tuning via XENTRY with the development data kit or via Vediamo. I’ve done it on my ‘18 C43 and it takes about 6 mouse clicks. The lack of actual knowledge on this forum is seemingly endless.
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016 c450 AMG
The only knowledge predominant on this forum is where to buy wheels, spacers, downpipes and add-ons..splitters, spoilers etc etc..
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2019 C43
Junior Member
Joined: Oct 2018
Posts: 55
Likes: 8
From: Maryland USA
2024 GT 55
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Joined: Feb 2020
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2019 C43
https://benzninja.com/get-the-benzninja/
UPDATE: Did my homework with BenzNinja and cannot rationalize the cost for this one car. The price of admission is around $950 to $1,100 including required equipment and membership.
Last edited by ////AMG_C43; Mar 15, 2022 at 10:42 PM.
