MuffinFlavored

Which is best out of Renntech, Eurocharged, and DMETuning? Renntech said they offer some kind of $50k warranty if any damage is done to your engine. Not sure if the other two can say that?

What's the standard for downpipes? Are they really needed? I feel like the tuning culture is more of a BMW thing. Young guys trying to inch the most out of their cars. Here, more refined older gentleman taking less risk. I could be wrong. Curious what you guys think!

Mandarin

The best tune is to stay with factory ECU calibration, no problem with warranty, no problem with a dealer, no headache or thoughts about possible problems. IMHO

These factors above are really keeping me out of DP and tune. ��

C63SVERT

I have had Renntech do every single Mercedes I've ever owned. started with an E55 in 03', 9 AMG's later, multiple 65's, AMG GT, E63S, C63S even my wife's ML63 has a tune and downpipes. I have never had a single issue with any dealer when involving renntech, that is not the case with any other tuning company. Hartmut Feyhl the owner of Renntech was in charge of AMG in the mid-late 80's and has a direct and personal relationship with Mercedes and AMG. i currently have a R231 SL65 and 17' C63S cab that they just finished and its breathtaking. it is quite a bit more money but not voiding your warranty is worth every dime.

ArtyyArt

I'm having the same dilemma. Renntech & Weistec are my options. Personally, I might be going with Renntech. Yes it's $1,000 more than Weistec but knowing that dealers are ok with Renntech tuning and won't really give any issues kinda helps me decide with Renntech. At the end of the day if you choose to tune the car, you have to be ready with any issues it may cause in the future. Not saying it will, but just be prepared. Also if you go to Renntech's website and look at the dealers they have in USA, you will notice that there are a lot of Mercedes dealerships so that means something. Plus, my brother had purchased his W212 E63s from a Mercedes dealership here locally that had Renntech Tune & Downpipes. Hope that helps.

Ralcbah

Be careful with this rationale...if you have a Renntech (or tuner) friendly dealer nearby, then this holds up. But make sure you have at least confirmed with the dealership, a SA and tech, that they do in fact support Renntech mods, or are mod-friendly in general. Just because one dealership is OK with Renntech (or other tuner) does not mean the one down the street is.

Also, the pay to play guideline is always in effect, so just be prepared for worst case, as you mentioned, regardless of how mod-friendly your dealer seems.

ArtyyArt

Exactly. My dealership is very open with me and I do know the General Manager so I never have any problems

Ralcbah

That's the way to do it...just wanted to make it extra super duper clear for folks. Looking forward to sounds clips when you get your gear installed.

ArtyyArt

Haha yes. It's going to be insane

ronin amg

OE tune from Benzworks on both my cars..

Michael Khan

I would go with renntech, I did do full blown brabus upgrade on my old GL550, but it is a pain in the *** if something goes wrong. There is no certified brabus dealer on the east coast, the closes shop that brabus had certified was about 3 hour drive from my house.

MuffinFlavored

kcjonz

Vic55

For bolt on's I think these are the top 5:

https://www.drteitelbaum.com/blog/to...ns-in-the-u-s/

kcjonz

MuffinFlavored

Because I've been whipping an M5/M6 so long that **** is starting to feel slow and I don't have 720s money!!! If my E63S deal falls through, I'm getting a *******g Honda Accord!!!! F*ck it! My 401k will love it lol

Michael Khan

I had no major issues, I was just saying it would be a pain if something did go wrong. Since most places were extremely far.

kponti

Renntech, like Ralcbah said will only be ok at a Renntech friendly dealer! If you went to another MB dealership, they will not be so friendly. If your car is flagged, it is a permanent thing and will most likely never be unflagged. All work over $1000 will have to be approved by a regional rep after flagging and they will go through to make sure there is not an iota of a chance the tune did not have anything to do with it before authorizing of denying the repair.

shardul

iTrader: (1)

If you decide to get downpipes we have them.

MuffinFlavored

For how much and how do they compare to the other offerings? Or is the general gist... a downpipe is a downpipe is a downpipe?