C55 ECU Tune Reliability?
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Senior Member
Joined: Mar 2011
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From: Bella Vista, AR
05 C55 AMG
C55 ECU Tune Reliability?
What is everyone's experience with their aftermarket ECU tunes? My understanding is that these tunes modify the ignition timing, maybe some throttle characteristics, and air/fuel.
My question is how conservative are these tunes? How close to limit of knock are these timing curves? I understand that a knock sensor will trigger automatic ignition retard being dependent on the counts of knock it receives. However I don't know if I want my ECU running that aggressive of a curve.
Any feedback?
Thanks,
Derek
My question is how conservative are these tunes? How close to limit of knock are these timing curves? I understand that a knock sensor will trigger automatic ignition retard being dependent on the counts of knock it receives. However I don't know if I want my ECU running that aggressive of a curve.
Any feedback?
Thanks,
Derek
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From: Orange County
a land yacht.
It's obviously going to modify those things as mentioned, which is expected in the quest to gain more power. My question for you is: if you don't want to run that aggressive of a tune, then why get a tune at all? AMG made the car to their specifications, which are reliable and powerful. If you want more power you could be compromising some reliability, how much? That is hard to say.
I would imagine the tunes are not too aggressive from aftermarket companies, not sure how close they are to the knock.
I would imagine the tunes are not too aggressive from aftermarket companies, not sure how close they are to the knock.
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From: AL,IL, GA, CA
CLS, SLK, ETC
Most tuners doesn't provide aggressive tunes for our engine (thus no dramatic gains). You should be fine. I never heard of a story of engine failure due to crappy tuning..Go with eurocharged. $399, can't beat that.
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From: New Zealand
A company like eurocharged will have a reliable tune. Ruining engines is not good for business. They will also be more conservative than they could be, the reason is every car is slightly different and they have to tune to the worst case scenario. Indiviudal dyno tuning you can be much more aggressive while making sure you are staying away from knock. I am happy with my tune but its obviously not a c55.
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C55 AMG T with Kleemann K2 and some stuff: 414 hp and 562 Nm :-)
I have the Kleemann ECU software and I love it!!
The increase in max power is not big, but noticable. You go from
367 crank hp to 380-385 approx, most tuners end up there.
The big difference is in the responsiveness. There´s a lot of "restrictions"
in the original software that are taken away. There´s a lot more responsiveness in the pedal now which make the car a LOT more fun to
drive and you feel more control over the car.
Never original again!!
MPG are slightly improved too.
The increase in max power is not big, but noticable. You go from
367 crank hp to 380-385 approx, most tuners end up there.
The big difference is in the responsiveness. There´s a lot of "restrictions"
in the original software that are taken away. There´s a lot more responsiveness in the pedal now which make the car a LOT more fun to
drive and you feel more control over the car.
Never original again!!
MPG are slightly improved too.
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From: Toronto, Canada
1993 Honda Accord, 1995 Maxiam, 2002 Sentra Spec-V, 2008 Civic SI, 2007 350z, Now 2005 C55
Is there any problems after the tune? I am currently living in canada. 1 most concern is in the winter time, I scare the engine will knock like crazy after the tune........Anyone experience it?
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From: New Zealand
Taking 0% chance that something can go wrong and will require major work under warranty. And yes that means that there is a tiny risk with any sensible modifications, ecu or otherwise. Every car I have ever owned is tuned rich from factory and can safely run leaner with slightly more ignition timing at WOT. If you are making tens of thousands of a particular model you don't want to put anything to chance.
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From: New Zealand
I don't know specifically how MB controls their engines but most cars with a bad tune, the engine will frequently experience knock even though the ecu can get rid of it temporarily until next time. It doesn't take too much of this especially if there is severe pre-ignition to ruin some stuff- rings, HG etc. Boost obviously makes this even worse.
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From: Va Beach, VA
05 C230K SS (sold), 06 C55 (sold), 08 Yamaha R1 (sold), 16 X5M
it's in the manual (at least it was for my c230) the ECU can adjust up to a certain percentage for both short term and long term (differing percentages respectfully)...i had this occur when doing my timing chain. My timing ended up being off ever so slightly so it popped a CEL, but after a few days of driving it went away and never came back so I know the timing was only off under the max correctable percentage that the ECU now equates for...
Similar if you lived in extremely high altitudes, your MAF would differ greatly than sea level numbers and thus the ECU needs a tolerance to be able to correctly respectfully
Similar if you lived in extremely high altitudes, your MAF would differ greatly than sea level numbers and thus the ECU needs a tolerance to be able to correctly respectfully
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Go to the C63 forums, there's plenty of complaints about tuners and tuning ; Tunes being copied and stolen and used on other cars?? (and some allegations of engines grenaded too).
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I have the Kleemann ECU software and I love it!!
The increase in max power is not big, but noticable. You go from
367 crank hp to 380-385 approx, most tuners end up there.
The big difference is in the responsiveness. There´s a lot of "restrictions"
in the original software that are taken away. There´s a lot more responsiveness in the pedal now which make the car a LOT more fun to
drive and you feel more control over the car.
Never original again!!
MPG are slightly improved too.
The increase in max power is not big, but noticable. You go from
367 crank hp to 380-385 approx, most tuners end up there.
The big difference is in the responsiveness. There´s a lot of "restrictions"
in the original software that are taken away. There´s a lot more responsiveness in the pedal now which make the car a LOT more fun to
drive and you feel more control over the car.
Never original again!!
MPG are slightly improved too.
Thread Starter
Senior Member
Joined: Mar 2011
Posts: 324
Likes: 2
From: Bella Vista, AR
05 C55 AMG
