Did Kleeman ECU Flash
Member
Joined: Mar 2017
Posts: 144
Likes: 8
From: Vancouver, BC
2014 Mercedes C350 Coupe
Thread Starter
Senior Member
Joined: Jan 2018
Posts: 254
Likes: 16
2014 C300 4matic sport sedan
it sucks they dont have official numbers but i notice a considerable difference and it makes sense that it would have at least the same power as c350 since its same engine. They also take off the annoying eco mode and take off the speed limited. Its a highly reputable company too not just some spot nobody knows about.
Super Member
Joined: Feb 2015
Posts: 616
Likes: 102
From: Canada
2019 911 GTS / 2016 X3 / 2015 E63s / 1993 RX-7
I would like to believe it, but the absolute lack of proof (from the Tuners or the purchasers) is disappointing.
As many have stated, adjusting the throttle 'tip in' does not equal more power.
Would love to see either dyno proof, or 1/4 mile data.
My wife has a c300 4matic (276 engine) and would do this if I saw ANY proof aside from the websites stating the benefits.
As many have stated, adjusting the throttle 'tip in' does not equal more power.
Would love to see either dyno proof, or 1/4 mile data.
My wife has a c300 4matic (276 engine) and would do this if I saw ANY proof aside from the websites stating the benefits.
Thread Starter
Senior Member
Joined: Jan 2018
Posts: 254
Likes: 16
2014 C300 4matic sport sedan
I would like to believe it, but the absolute lack of proof (from the Tuners or the purchasers) is disappointing.
As many have stated, adjusting the throttle 'tip in' does not equal more power.
Would love to see either dyno proof, or 1/4 mile data.
My wife has a c300 4matic (276 engine) and would do this if I saw ANY proof aside from the websites stating the benefits.
As many have stated, adjusting the throttle 'tip in' does not equal more power.
Would love to see either dyno proof, or 1/4 mile data.
My wife has a c300 4matic (276 engine) and would do this if I saw ANY proof aside from the websites stating the benefits.
Member
Joined: Mar 2017
Posts: 144
Likes: 8
From: Vancouver, BC
2014 Mercedes C350 Coupe
Exactly. It’s not a hard concept. If you have the c300, the difference will be enough that you can feel it; no need to dyno it to ensure gains. If your on a c350, however, I guess it makes more sense to have dyno confirmation as the gains are smaller and most likely you won’t feel them.
Junior Member
Joined: Jun 2012
Posts: 38
Likes: 1
R171 SLK 350
On a C300, the tune is similar to a really good tune on a forced induction engine. Yes, there may be better throttle response, but there's much more there than just that. The car just GOES!! You could perceive the difference even if you're comatose behind the wheel!
Newbie
Joined: Aug 2013
Posts: 2
Likes: 0
From: Philadelphia, PA
2014 Mercedes Benz C300 4Matic Sport
just got my flashed ECU back from Kleeman on my 2014 C300 4matic and it was absolutely worth it. Drives like a different car. Throttle response is way quicker and car off the line is a different car. Highly recommend it. Turnaround was great they got it in morning sent it out that afternoon and i got it back next day.
Super Member
Joined: Feb 2015
Posts: 616
Likes: 102
From: Canada
2019 911 GTS / 2016 X3 / 2015 E63s / 1993 RX-7
No different than the C63 with outputs of 451hp, 481hp, and 507 hp. All three end up with virtually the same final HP.
The difference is that both the vendors (of the tunes) and the owners of the cars with these tunes have posted hundreds of dyno graphs showing these gains. You end up at the same place with an e-tune for the C63.
My only concern is that I would like to see a dyno graph from a vendor, OR an owner. Or a 1/4 mile slip before and after (or heck, just after!) showing that there was a gain.
Changing the throttle mapping to make it more sensitive gives the sensation of more power, and is a great way of making the car feel faster without actually changing the final output.
I am not against spending the $$$ for my wife's car C300 4matic, but would like to see some objective proof of these gains. These tuners produce graphs for their other tunes, but for the c300/c350 engine I have yet to see objective evidence.
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Newbie
Joined: Mar 2018
Posts: 11
Likes: 0
From: Southern Cal
2013 C300 Luxury 4Matic
I understand the the C300/C350 engines are mechanically the same and so there is not an issue with boosting the C300 to the same HP levels as the C350. Are there differences/issues with either the transmissions or 4matic gear in the C300 or are those also the same between the two?
Last edited by ronbutchart; May 9, 2018 at 12:56 PM.
