MBstve

Hi,

My car is a 2008 C350 w204.

So far, I have a x-pipe exhaust then I also removed my mufflers and replaced them with the stock resonators. Basically I just moved my resonators to the back.

It sounds so much better than when it was stock and I'm really happy with it.

However, after doing that to my exhaust, I didn't notice any increase in power

Now, I'm wondering what other modifications can I do to make my car go faster?

A Mercedes technician suggested that I change my mass air flow sensor (MAF) to an AMG MAF sensor, he says that it will increase around 50hp.

Is that true?
Any other suggestions for more power?

Thanks

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I'm not surprised. A simple mod like putting an exhaust on your car (or in your case, removing part of your exhaust?) won't net you a noticeable HP gain.


lolwut? I'm not an expert, but I can't see how or why that would make sense. 50hp? Jesus where do I get my AMG MAF?


Bottom line, if you want a serious hp increase, you're going to need some sort of FI, and from what I understand, it is a huge undertaking and a huge expense to go turbo on these cars. You would be better off selling and getting a C63. These cars weren't meant to be fast. I have researched how, as I am very unsatisfied coming into my C350 from an E46 M3, and I've come to realize this car will always leave something to be desired, and will never be what I want it to be

Sportstick

How much faster is necessary? Power:weight ratio is the key. For some increase in daily driving, reduce weight. Leave the spare, jack, and anything else in the trunk at home. Keep the car between 1/4 and 1/2 fueled. No passengers. These will offer a small improvement. If you think a C350 is a full category off your need for speed, you need a different car.

cm60k

You have M272, while AMG got M156/M157,

AMG has completely different air system with dual MAFs,,

soo strange that MB technician suggested that, he should to know his stuff more than us..

ZAYED,,

MBstve

Thanks for pointing that out! I better ask him more about this.


Any other suggestions for increased top speed/acceleration?

How about an ecu tune? which brand is best?
(Renntech, Eurocharged etc...)

Are there any plug and play ECU tunes out there?

LILBENZ230

MBUSA? Oh you'd be surprised.

victort

Easier way is to lose weight.

cm60k

You can put intake manifold/82mm TB/ injectors from 09-11 SLK350, after that do an ECU tune from E/C or RENNtech,,

definitely, great results will gain after tune it..

https://mbworld.org/forums/c-class-w...-mod-c350.html

ZAYED,,

MadScience

I would contact Cory at kleeman about an ECU tune. I had it narrowed down between renntech and kleeman and I think kleeman has better and more competitive products/prices. Their K2 (stage 2) Package is around $3000 and I am really considering this as it is conservatively a 30 HP gain with a much improved throttle response. They also have the K3 package for around $8000 but this is more than I want to spend at the moment. Just my opinion

MBstve

Last night, I tried to reset the TCU, I did notice a little difference, it now shifts faster at M mode and also lesser delay at S mode.

Wow ecu tune is quite expensive though,

How about a Nitrous express kit?

Its cheaper right? but would that be any good?

cm60k

Eurocharged already turbo'd C350, you can contact them, hope they can do it, with LESS $$$$..


ZAYED,,

SoCal208

With the cost of ALL UPGRADE to made your C350 more power : sell you C350, buy a C63. The reason I suggest this : the German car is tuned to the MAX for each engine (C300, C350, C63), if your C350 do not have enough power for you, C63 is the way to go. Put a few thousand into your C350, you will not get them back when it's time to sell or trade in your C350 (most of people is scare to touch the MOD car, because ONLY the person own the car know, NOT the mechanic, NOT the MB dealer). I will NOT touch a MOD MB with a 10 ft pole. You know the MOD car, when it goes wrong, it is the money pit...only way it goes...is empty your wallet or... the junk yard.

paulo744

You can get a tune, which will add maybe 10-15 rwhp. The MAF will not change the power, if at all, that your car makes. There is little to win power wise on these cars. I do tune them so overall there are benefits, just not many. You are better off with a C63, where a tune and exhaust brings larger gains (and sounds).

edgalang

HMmm....no offense, but based on this response, I doubt the OP is in any financial position to upgrade to a C63.

As silly as it may sound, "Sportstick" has already given you the most realistic approach. You're next logical step is an ECU tune, then possibly lighter wheels, however each step will require more and more $$$.

It is unfortunate you were not aware that an X-pipe yields no power gains and actually devalues the overall worth of the vehicle.

FAneek

+1

The guys at Eurocharged are great and very knowledgeable.

MBSebas87

does anyone know how OE tuning is??? seems they have a reasonable ecu tune as far as price and HP gains

snowmuch

Not the C63, its actually detuned to avoid competition with E63(m156) and S63(m156).