Has anyone tried "performance tuning" from the dealership?
Thread Starter
Junior Member
Joined: Dec 2020
Posts: 15
Likes: 1
From: San Diego, CA
GLC 300 Coupe 4matic
Has anyone tried "performance tuning" from the dealership?
I noticed my local M-B dealership offers "performance tuning" options which include things like upgrading ECU and enhancing exhaust sound. I was considering both of these and looking at third-party options, but would much rather go with M-B's offerings if they're good. The dealership's website mentions exhaust sound options with names like "earthquake" and "daytona" but I am not sure if they are actually modifying the exhaust system or just tweaking the sound enhancement algorithms that kick in with S and S+ modes. The ECU upgrade also sounds very enticing since that is the first real performance upgrade I was thinking about doing.
Anyone tried any of these offerings from M-B on your GLC? Is it worth it or should I just go for something simple and aftermarket like a resonator delete for the exhaust or third-party ECU chip?
Here is the performance tuning page from my local dealership's website: https://www.mbsd.com/mercesdez-benz-performace-tuning/
Anyone tried any of these offerings from M-B on your GLC? Is it worth it or should I just go for something simple and aftermarket like a resonator delete for the exhaust or third-party ECU chip?
Here is the performance tuning page from my local dealership's website: https://www.mbsd.com/mercesdez-benz-performace-tuning/
Thread Starter
Junior Member
Joined: Dec 2020
Posts: 15
Likes: 1
From: San Diego, CA
GLC 300 Coupe 4matic
That's a scary thought! Surely the dealership would warn me that I'm putting my warranty at risk? Have you experienced or witnessed anything that would make you expect that?
Last edited by Kronodeus; Dec 23, 2020 at 06:35 PM.
Senior Member
Joined: Mar 2014
Posts: 339
Likes: 35
From: Nevada
2014 E63S, 2018 GLC 300
Anyone who wants to rewrite the ECU or TCU should be ready to cover failure that can be related to the modification.
