Renntech
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Senior Member
Joined: Oct 2016
Posts: 250
Likes: 28
From: New York
2018 S63 Sedan, 2018 GLS 63
Renntech
I ended up doing the trade of my S63 for the GLS 63 with roughly 5k miles on it and so far happy. Just curious, has anyone done a renntech tune on it? Not looking for anything crazy, but wanted to get the Horse power and torque into the mid 600 range if possible. If anyone did, was it worth it. I know it’s an SUV, but I still like the power behind it. Oddly enough, the body role is better in the GLS then my 2018 S63
MBWorld Fanatic!
Joined: Aug 2003
Posts: 8,882
Likes: 1,212
From: In my garage
E55, GLS450, GL63, GLE350
I used them for an ECU/TCU tune on my old CL600. Picked up over 125 RWHP from stock. My car produced more power with their tune than was advertised. Had an issue with the TCU and they shipped me another one, no questions asked, with next day shipping. Turned out to be my fault but they never questioned.
With that said, there are other good tuners in the game now and their prices are on the higher end of the spectrum. No complaints here with Renntech and was nothing but positive. Never had a CEL or any issues other than it blowing the tires off when I stepped on the giggle switch.
With that said, there are other good tuners in the game now and their prices are on the higher end of the spectrum. No complaints here with Renntech and was nothing but positive. Never had a CEL or any issues other than it blowing the tires off when I stepped on the giggle switch.
