Razzy

I recently purchased a 2012 C63 AMG Performance Package. It has 481hp and 443 torque.

I hear quite a few people go ahead with getting a reflash/tune on their car which opens up significant gains. Eurocharged claims that with my stock C63 Performance Pack, I will be pushing 540hp or so and a bit more torque as well.

Now my worry is, what are the negatives of getting this done? I presume with the added hp and torque comes increased wear and tear on engine, transmission components (lets not even begin on tires) and perhaps warranty as well? Although Eurocharged will provide me the handheld (for a price ofcourse) so that I can add or remove the tune as and when needed.

I really am at odds and although I want the extra "boost" that comes with the tune, I just don't want to have it at the expense of my peace of mind and increase in engine/service issues with my new car.

Please advise.

Autosport7

This tune is more-or-less going to set the management system to where it should be from the factory. Your car has been de-tuned from the factory to keep it underpowered allowing them to charge more for some of their more powerful cars running the same exact engine.

I personally do not believe you will ever see a neg side effect from this mod, unless of course you consider getting sideways a neg!
You will lose your warranty of the dealer finds it though.

alexmtl

I wouldn't worry too much about wear, our engine is very restricted from the factory and can handle a lot more power.
That been said, you probably won't be at 540hp with a tune only. More likely 510-520hp, from what I've seen on this forum. Maybe others can confirm!

Ingenieur

as long as rpm's are not increased it should not increase stress much

as others have said the tune basically removes the factory restriction/limitation

Razzy

Thank you for the input. The guys at Eurocharged also said there would be absolutely no issue but of course that could be a matter of bias i thought.

Razzy

Thanks for the info, yes I too found 540 with just a tune to be too high.

Let's say the car is in the ballpark of 520hp. Do you guys recommend going for a tune? I hear some people say it livens up the car further, but our tires aren't the greatest to begin with so more power is kind of a moot point.

Please do chime in.

Razzy

Ah good point. I believe there should be no adjustment to revs.

ld63

Is it possible to rollback to the stock ECU before any dealer visits to prevent them from denying warranty claims?

Isn't there a log they can audit that tells them it was changed? (and possibly still deny warranty claims due to your log showing an ECU change in the past)

tfthach13

So I have a Velos ECU tune and it's pretty damn aggressive...almost too aggressive. Having experienced an increase in power, I personally would have liked to focus on handling for my C63 more. It's plenty powerful enough in stock form.

But a tune is cheaper when compared to all the things you need to do to increase handling (LSD, tires, suspension, lighter hood & trunk, etc).

average joe

I had the Eurocharged tune, and it dyno'd at 534bhp (With Carbinio intake).
The tune is awesome...much louder blips on downshifts, generally a more brutal sound from the exhaust.
Dont worry about wear and tear on the engine, there is plenty potential for increasing BHP with stock internals.

Jerry at Eurocharged is a top guy and knows the M156 platform inside out.

papashango

The only reason I am refraining from a tune in my 2011 with PP is the warranty. Also, I heard that it doesn't affect the PP cars too much other than making the shifts better. But I am mostly just concerned with the dealer refusing warranty work if something bad was to happen!

Razzy

Yes I too don't want to lose my warranty.

average joe

If you get the handheld, you can flash it back to stock prior to taking it to the stealer. From what i know when you flash with the Eurocharged tune it does not increase the "flash counter" in the ECU.

Gadget

If you are near me in Southern Maryland we can do before and after dyno testing if you want.

G

realjones88

Then you know the answer to the question...don't tune car your car. I would not expect to be able to hide your tune by reflashing before dealer visits...if you choose to tune your car you have to assume the engine warranty is gone.

I don't think it's worth it on a car with the p31 anyway.

papashango

Exactly the conclusion I reached! The advantages on a P31 is just simply not worth the possible hassle of voiding the warranty. Plus the car goes through the tires fast enough as it is. lol

Razzy

Yea the car is fast enough. I guess the question is, when is enough ever enough? I just wanted to get that extra oomph unlocked.

The Eurocharged rep i spoke to says the tune should not affect warranty as the handheld that he will give me can be used to remove and re-add the tune seamlessly.

I am curious to see if Mercedes can tell that the car has been tuned or retuned etc even if it is back to factory set up.

tdk930s

Can you tell me how much the Eurocharged tune now, last time I missed the sale on memorial day sale.

C63vancouver

I also wanna know what will the gain be for the 507 version since i already have a so call tuned C63 with 507HP.

Bardman

PP performance are claiming gains of 24kw and 30nm of torque on chip tune of 507.

PP performance claim gains of 29kw and 40nm of torque on chip tune of P31 (or could be the P30, not sure which one is which, but they claim gains on both).

These are peak gains, there is no detail on how the power/torque curves are impacted across the range.

You can check out the PP performance numbers here:

http://pp-performance.de/en/tuning/chiptuning/

Just choose your specific C63 model to get before and after claims.

austinauflick

PP Performance is crazy expensive next to EuroCharged.

-Marlin-

My concern would be on two things

1 Warranty going bye bye
2 all the other components that become the weak link in the drive train.....tranny, drive shaft, and hell tires don't exactly like the stock hp as is

Petakii63

Guys like Keith (Dads C63) and if I'm not mistaken Merc63 has a stage 3 blower. Both, do not have internal work. At least I know Keith didn't. Keith's car with 200 shot was pushing over 900 crank Hp and he never blew a piston or cracked the block. His transmission was replaced 3 times he told me. All from weistec. This motor can sure take a beating. You won't have any problems with a tune.

OE has done testing on safe rev limit increases. Stock non p31 revs to 7010. P31 I believe is 7210. For a non p31 car an increase of 7300 is acceptable. The p31 with upgraded valve train can handle 7500.

Ingenieur

A 200 rpm increase is ~6% more stress

Does the ecu give the tcu a shift command?
Or does the tcu sense speed and is self-contained?

If the engine rev limit is increased I assume the tranny shifts higher or there would be no point

PanzerLehr

Has anyone on here ever had a warranty claim rejected because of a software mod? Every vehicle I have owned since 2003ish has had software mods and it has never been questioned. Even my C32 went unnoticed.