Kleeman ECU tune, 3.5L C300
01-10-2014, 05:21 PM
#101
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2022 EQS 450+ until my 580 comes in
I talked with Cory, and he confirmed that the engines are 100% mechanically the same, in displacement, compression ratios, etc. The only reason numbers aren't available is because Cory doesn't have access to a AWD dyno, and doesn't want to throw around arbitrary numbers.
I'm confident that the tune gets you beyond C350 power. Cory responded to me within an hour with a very detailed email, citing many happy customers, and only one so far who did not get the power he expected. OE hasn't replied at all regarding why there is a difference between tunes for 2013+ C300s and C350s. Something weird is going on there.
My money is with Kleemann this summer.
I'm confident that the tune gets you beyond C350 power. Cory responded to me within an hour with a very detailed email, citing many happy customers, and only one so far who did not get the power he expected. OE hasn't replied at all regarding why there is a difference between tunes for 2013+ C300s and C350s. Something weird is going on there.
My money is with Kleemann this summer.
01-10-2014, 05:39 PM
#102
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2017 C43 AMG
Not that I'm the only unhappy customer to ever get this tune but I am def a bit disappointed. If you live in Colorado (where Kleemann is) you can find an 4wheel dyno. I don't feel a 60hp+ gain. One of these days I will get it dynoed in NY.
It's your money do with it as you please. Still happier with the car then stock motor or my 2011 or 2008 models. So that's a plus.
PS Cory mentioned to get the latest SW ECU upgrade from MB, haven't check with them yet.
It's your money do with it as you please. Still happier with the car then stock motor or my 2011 or 2008 models. So that's a plus.
PS Cory mentioned to get the latest SW ECU upgrade from MB, haven't check with them yet.
01-10-2014, 06:34 PM
#104
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2013 C300 sport 4matic
How can you check to see if you have the latest version and what is the latest version ?
01-10-2014, 07:05 PM
#106
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01-10-2014, 07:46 PM
#107
Super Member
About Engine specs:
More interesting:
The C300 uses the identical engine as the C350- compression ratio, displacement, exhaust, etc.- the 300 and 350 are 100% identical mechanically (the older M272 engine was produced in different displacements where the M276 is produced ONLY as a 3.5L). What MB does to reduce power output, like the C63, is by limiting how far the throttle is allowed to open, and this is done entirely with software, just like the C63. TUNE files simply un-do what MB did to detune these cars by allowing the throttle to open fully, and we also alter ignition timing maps, fuel delivery, throttle response, etc. to take output above and beyond what a stock 350 makes.
We did a tune for a client in, I believe it was NY who told us has both a C350 (stock) and a C300 with our software- he raced them and his C300 wound up being faster- not by a large margin, but it pulled on his stock C350, which suggests our power estimates are accurate.
02-01-2014, 11:50 AM
#110
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08 c350 sport
I have same ecu tunning that kleeman offers for $900! With warranty if anything should go wrong or if I am not happy with tune. Throttle response is insane! I will be taking the car in to run some dyno testing to see how efficient the vehicle is. With ecu tune I am getting about 2 mpg better and no more throttle lag. I also recommend getting a sprint booster for the finishing touch.
02-01-2014, 11:58 AM
#111
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2022 EQS 450+ until my 580 comes in
I have same ecu tunning that kleeman offers for $900! With warranty if anything should go wrong or if I am not happy with tune. Throttle response is insane! I will be taking the car in to run some dyno testing to see how efficient the vehicle is. With ecu tune I am getting about 2 mpg better and no more throttle lag. I also recommend getting a sprint booster for the finishing touch.
JaredP, if you end up getting the Kleemann tune when the weather improves, please share your impressions.
02-01-2014, 02:53 PM
#112
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08 c350 sport
It is an alternative ecu tunning from a registered dealer of Kleemann for our beloved M272 engine. I got a chance to drive it yesterday. The engine increased in torque, very smooth crisp shifting with impressive redlining. I also was impressed by how I didn't need to have in the sport drive mode and still feel the boost. They are making the final tweaks today and I should have it by Monday. I have custom mandrel bend exhaust 2.5" pipe, high flow cats, resonator delete, x-pipe with stock mufflers. The mufflers I had on before were insanely loud. To much "rice". I am still getting the Kleemann headers or unless I find an alternative that reliable and performance. Will probably have to retune ecu again possibly but doubt it.
02-01-2014, 02:57 PM
#113
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2022 EQS 450+ until my 580 comes in
It is an alternative ecu tunning from a registered dealer of Kleemann for our beloved M272 engine. I got a chance to drive it yesterday. The engine increased in torque, very smooth crisp shifting with impressive redlining. I also was impressed by how I didn't need to have in the sport drive mode and still feel the boost. They are making the final tweaks today and I should have it by Monday. I have custom mandrel bend exhaust 2.5" pipe, high flow cats, resonator delete, x-pipe with stock mufflers. The mufflers I had on before were insanely loud. To much "rice". I am still getting the Kleemann headers or unless I find an alternative that reliable and performance. Will probably have to retune ecu again possibly but doubt it.
This thread is more about the M276 3.5L engine tune.
02-20-2014, 10:51 PM
#115
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2015 E250 Bluetec
Today I took my car in for the 1st schedule service so they gave me a C350 coupe as a loaner. I have my Car ECU done by Kleemann. Amazingly the stock c350 is not even close in throttle response, it feels like a lazy *** doesn't want to move. I definitely would recommend Kleemann. Don't get c350, save $$$ get c300 then get Kleemann!
02-20-2014, 11:48 PM
#116
Super Member
That's really interesting. I forget that the throttle response benefits from the tune are pretty significant as well. The lag in my C300 is starting to get on my nerves too... All the more reason to tune.
02-21-2014, 10:19 AM
#118
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2015 E250 Bluetec
Happy driving and Gold Canada!
02-23-2014, 02:19 PM
#119
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02-25-2014, 01:33 PM
#121
there are k2 and k3 kits available for M272 V6 3.0 3.5 ALREADY
which engine u talking about, if it is M272, kleemann K3 kit is already available which includes. checks this links http://www.kleemann.dk/Performance/Engines/350V6_M272
350 V6 (M272)
2230 280 300/Tuning solutions available upon request
350 k1: A costum made ECU upgrade. Up to 305 HP and 375 Nm (278 lb-ft) of torque.
350 k2: K1 + a set of stainless steel tubular exhaust headers and downpipes. Up to 320 HP and 390 Nm (289 lb-ft) of torque.
350 k3: K1 + K2 + a set of super sport camhafts. Up to 340 HP and 400 Nm (296 lb-ft) of torque.
350 k1: A costum made ECU upgrade. Up to 305 HP and 375 Nm (278 lb-ft) of torque.
350 k2: K1 + a set of stainless steel tubular exhaust headers and downpipes. Up to 320 HP and 390 Nm (289 lb-ft) of torque.
350 k3: K1 + K2 + a set of super sport camhafts. Up to 340 HP and 400 Nm (296 lb-ft) of torque.
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dlord09 (02-09-2021)
02-25-2014, 01:38 PM
#122
Super Member
Thanks for the info, but this thread is about the M276. As far as I know there does not exist a C300 with a 3.5L M272, so I'm not understanding where all the confusion is coming from...
Last edited by JaredP; 02-25-2014 at 01:43 PM.
02-25-2014, 02:17 PM
#123
02-26-2014, 06:39 AM
#125
