RENNtech ECU
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Newbie
Joined: Oct 2018
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S63
RENNtech ECU
Recently purchased a 14' S63 from a dealership, and the previous owner installed a RENNtech exhaust on the car.
Anyone out there have enough first hand experience with RENNtech ECU modifications such that you could tell me how to tell if my car has a modified ECU by RENNtech too, or not? I'm not sure what to look for, or how I could tell?
Anyone out there have enough first hand experience with RENNtech ECU modifications such that you could tell me how to tell if my car has a modified ECU by RENNtech too, or not? I'm not sure what to look for, or how I could tell?
Joined: Mar 2018
Posts: 1,410
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From: Socal and Norcal
MY17 S63AMG - MBUSA Buyback. MY16 SL63 - Sold MY19 W213 E63s. 2020 W213 E63s Wagon
Contact RT and ask the same thing you’ve asked here and provide them your VIN and they can tell you if you have their tune. I would ask the selling dealer if your ECU is stock or tune, if they sold you a Mercedes with a tune, they should be liable if the tune causes any issues that might or might not void your warranty. Also keep in mind some people might buy downpipes from one vendor and tune from a another vender.
MBWorld Fanatic!
Joined: Jul 2007
Posts: 1,460
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From: Boston
S-class
What I learned from my previous ecu tune. Is that, if your ecu had been tuned before. You can check physically if the seal around the ecu has been cut. Most tunes require opening the ecu’s. The dealer won’t be able to tell. Unless they really plug in your ecu and really look into it.
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Newbie
Joined: Oct 2018
Posts: 13
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S63
and send it in.
