Wonder if getting tune would void factory & CPO & extended warranty? Bought a 2018 for wife, she wants it quite, Then I want it faster. Lol
Welcome to the forum, I see you decided against working for a living as your Pops clearly did, Nice schutzenschnur, silver is tough to get
Supposedly Renntech tunes might be covered on warranty; however, I’ve spoke to one of their rep and didn’t get a solid answer if MB warranty is okay with their tune.
all md dealers sell renntech products, thats why they cover it, hello!
really? ask my smart friend to help me, really? coz i am stupid, really?I will very likely use a renntech tune, as they do have an outstanding reputation. They likely have very few actual issues with mechanically breaking motors thru poor tuning parameters. they may even intercede at the dealer level should an issue arise. That said, once you rockup to a dealer with a flashed ECU and get a diagnostic done, MBUSA will flag your VIN in the database. What happens should you need warranty work at a later date will be up to MBUSA, not the dealer after that.
Those of you interested in the topic should read the renntech website, I have posted the pertinent section here
Skip to the 6th paragraph. You will find comprehending the meaning of the words difficult, so get your smart friend to help
I had a piggyback tune that was horrible , all torque at 3k rpm and no horsepower. Later i got the renntech ecu tune that uses a plug in module to the obd2 port so you can go back and forth between stock and tuned. The car is faster now with nice linear power. You could roll into the dealer with the stock tune and at least they would have to look for it. With vw/audi they definitely look , mercedes maybe not so much
I would like to comment. The renntech T&C's and advice redirected from post 9 is very general, standard language. They inform of US law governing vehicle warranty language, and I think make it clear that if you say tune your vehicle with a renntech tune it does NOT totally void a vehicle warranty, but rather it COULD void a warranty related to what that part affects, i.e. engine, tranny, drivetrain, type failures as example.
This subject is of interest to me right now as a matter since I just contacted them about their HHT plug in tune (not ECU removal, send for flash, blah blah). My reason for contacting them is originally I wanted to go with a Vivid Racing tune of same sort, plug and play, no pulling ECU, and it was less than half the price of Rt. However, I also read of some consumer issues where mechanical damage had been done to a Porsche motor, a few others, with Vivid not standing behind product.
All these products warn that if you are combining them with other performance products, you may have no warranty/recourse with said company since factors are out of their control. Their product is designed for the MB AMG vehicle it was installed on, sans other aftermarket parts.
Rt seems to have a "cozy" relationship with MB dealers, they markup already expensive products. The Rt owner that started the company back in '89 was focused on AMG only before branching out, and is German, company in US based in Florida.
Bottom line, I decided that if I get this plug in tune, I'd pay twice the price and buy Rt since I cannot find any consumer posts compliaining of issues, or not backing their product. I have no warranty issue to worry about at this point, other than an issue related with this product comes out of my pocket.
I went with a Weistec tune on my '16 CPO 45 and have had the vehicle in several times for warranty work without any issues whatsoever. It's always buyer beware when it comes to modifying your ride, but at the end of the day, as others have mentioned, it's up to the dealer to prove what you modified caused or led to the failure of the part being warrantied. In my opinion, the risk was worth the entry fee.
.... A good tune probably has less potential to do harm through higher stress than a tune plus hardware and the biggest factor probably is how the car is driven and maintained