S-Class (W222) 2014-2020

RENNtech tuner

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Old 02-26-2020, 09:01 PM
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'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?
Old 02-27-2020, 09:38 AM
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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.
Old 02-27-2020, 10:27 AM
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'20 GLS580, '18 S560
Originally Posted by RoseyPSU
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.
awesome.
I heard somewhere that the module also defeats the eco mode automagically. Is that true?
Old 02-27-2020, 02:11 PM
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2018 s560 4matic
Originally Posted by madkow70
awesome.
I heard somewhere that the module also defeats the eco mode automagically. Is that true?
I can't answer that one. I don't think I've ever used eco mode, either before or after the tune....

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