Jim Weidler

Just bought a new 2017 C43 sedan, my MB dealer is certified Renntech center, has anyone had the Renntech upgrade for their C43? If so, what is the new HP and torque? Is it a noticeable difference?

Gungaslow

I was wondering the same thing? Is it as good as AMR OR OE tuning?

C450JA

DONT WASTE UR MONEY AND GET THE AMR TUNE.

sean1.8t

Jim Weidler, meet Google. Google, meet Jim Weidler... Don't be shy now.

http://www.renntechmercedes.com/inde...sent/c-450-amg

Gungaslow

That is for the c450... the c43 tune is not listed

sean1.8t

Same car, pal.

Gungaslow

No the transmission is different and the Ecu is slightly different.. I called them and they said they are still working on the c43 tune at the moment..

ASH_C43

As mentioned in the main post, are these tunes noticeable enough?

sean1.8t

Yes, a few differences. But the motor and turbo's are the same resulting in the same power levels once tuned.

The 43 will not magically be capable of 50 more hp than the 450.

sean1.8t

Oh you'll notice it for sure. But at $2,300.00 hitting you in your pocketbook, you'll notice a soreness in your butthole region much more than the increase you'll notice in your butt-dyno.

I got OE Tuning's software for $800 and it's +100hp & +150tq

Or for half the price of Renntech, there is Vivid Racing's piggy-back tune. Similar numbers to Renntech and you can install/un-install in minutes so there is no worry about warranty issues.

ASH_C43

The AMR tune for 2017 C43 are also expensive:
$2200 for dyno
$2000 for ECU upgrade

What is the difference between these two tunes? Their description is almost the same.

Gungaslow

My local dealer is renntech certified and according to then it doesn't void warranty from Mercedes Benz..I would feel more comfortable knowing this, but I'm not sure how strong there tune is compared to OE or AMR.. anyone actually running the renntech tune on there c450 or have a comparison between some tunes and renntech?

sean1.8t

Go here and click/read everything:

http://c450amg.com/home/

All these websites give the information you're asking for. It's just numbers to compare. We don't have any magic info for you past that. Search here, search google, search some more and if that doesn't do it for you then you can always call the companies directly and talk to them. They are always eager to talk up their products to a potential customer. Happy modding

RENNtechHQ

Our official numbers for the C 43 AMG ECU Upgrade will be released this week

roy777

Also take note what octane gas these companies are using for the tune. Most will be 93+. So if you're in Cali like I am with the **** water 91, the same tune will yield much less HP making it not worth it.

sean1.8t

But you're starting at a lower power as well. It's all relative and it's pretty much always worth it.

roy777

No it does not work that way. If the tune was done at a different octane, the timing will be completely off. So it is not relative like you would think.

Mr. J

Most US stage 1 tunes are set for 91-93 octane pump gas.

roy777

Also not true, there are more states with 93 on pump than 91. I also called around a few shops and most said 93. For Brabus its 98.