Is there a way to do this without a full tune?

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...

No way an MB dealership will do this for you.

To answer the OP’s question: I am not aware of a way to do this without a tune.

You need a CPC remap which is quite expensive. As usually you have to buy a new one and swap it.

How expensive?

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...

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.

Thanks! That is what i was afraid the answer was.

Yea. It’s still pulling at 130.
At least 155 is respectable.
oh well.

$1500-2000 typically

Wow.
ok thank you for the information.

Martin tuning has the coding ability to get us up to 155

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

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.

The only knowledge predominant on this forum is where to buy wheels, spacers, downpipes and add-ons..splitters, spoilers etc etc..

Sounds like you have the tools and knowledge to make it happen. Please provide us with the links on what to get and how to use it. What other coding can you do? What are the initial setup costs?

+1

Forum Sponsor BenzNinja is the best resource for this. He can guide you to the correct hardware/software solution.

Thanks. Have already sent inquiry using the website.

​​​​​​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.