RENNtech tuner
Thread Starter
Senior Member
Joined: Feb 2020
Posts: 260
Likes: 72
From: Vienna, VA
'20 GLS580, '18 S560
RENNtech tuner
I have '18 S560.
Is anybody using RENNtech's ECU upgrade?
https://www.renntechmercedes.com/ind...22-s560-detail
I'm curious if there's a noticeable difference in power as they are claiming.
thoughts?
Is anybody using RENNtech's ECU upgrade?
https://www.renntechmercedes.com/ind...22-s560-detail
I'm curious if there's a noticeable difference in power as they are claiming.
thoughts?
Junior Member
Joined: Jul 2010
Posts: 55
Likes: 8
From: Pennsylvania
2018 s560 4matic
I have the same car as you, '18 S560 and have been using it since about Thanksgiving. Yes, there is a noticeable difference, especially in sport mode. You can feel the difference in comfort mode as well, but the pedal lag is still there. Overall, I'm very happy with the purchase. The only negative is that I'd say my average MPG has fallen by maybe 2-3 MPG per tank.
Thread Starter
Senior Member
Joined: Feb 2020
Posts: 260
Likes: 72
From: Vienna, VA
'20 GLS580, '18 S560
I have the same car as you, '18 S560 and have been using it since about Thanksgiving. Yes, there is a noticeable difference, especially in sport mode. You can feel the difference in comfort mode as well, but the pedal lag is still there. Overall, I'm very happy with the purchase. The only negative is that I'd say my average MPG has fallen by maybe 2-3 MPG per tank.
I heard somewhere that the module also defeats the eco mode automagically. Is that true?
Junior Member
Joined: Jul 2010
Posts: 55
Likes: 8
From: Pennsylvania
2018 s560 4matic
