DYNO Test and RENNtech Shop Tour! Mercedes Benz CLS 550 M278 ECU Tune (W218 C218)

[@WillCA-fg5so]

So wonderful to see someone finally did a detail dyno analysis of the M278 ECU HHT tune, drag racing w/ AMG and post-tuning driving experience and pull data. THX!!!

[@clevelandaeromotive]

Yup! The whole shooting match! Glad you like the videos. :)

[@trentdawg2832]

500/560 sec was my dream car when i was younger…….i would gladly give my CLS for one!!!

[@spookholidae4948]

I always heard of the legendary Harmut but that was the first time seeing him. That was cool.

[@gregoryfranks7347]

hartmutt is my hero!! a tuner amoung customizers!! legend utter legend.

[@clevelandaeromotive]

I honestly was a little “star-struck” myself.

[@richardg1973]

Insightful video! I especially appreciate the added technical explanation with the dyno graph and data logs. Running into the man himself, great way to end!

[@clevelandaeromotive]

Thanks! I was wondering if I should leave the laptop data shot in there. It appears I am not alone in geeking on the details.

[@gregoryfranks7347]

killer video!!! im a premerger fanatic!!!!

[@clevelandaeromotive]

Thank you! I agree. 4 cyl Hybri C63?? Nope!

[@farnum3297]

I have one main concern about this tune, I 100% agree is one of the best if not the best, BUT.. how is the stock transmission handling that extra stress? Is it ok on the long run? Do you need to reinforce it? Please let us know.

[@tredeuce2]

Awesome job. I used to have the Renntech tune on my CLS 550, it was fun to drive 😊.

[@clevelandaeromotive]

What did you replace it with?

[@tredeuce2]

Custom Eurocharged tune but I have other upgrades including turbos, downpipes, cold air intake, etc.

[@fb8207]

All cylinder walls ok? Many people have scorings on m278…

[@clevelandaeromotive]

I've had no reason to have my cylinders scoped (eg: pining, loss of compression) so I haven't had that procedure done. @@fb8207

[@fb8207]

@@clevelandaeromotive knowing many people who drive a 278 and have not issues. But after scoping the cylinders there a lot of scorings. A few with 80-130tkm on it with normal driving and the good 102 aral ultimate from germany… others drive 300tkm and have no scorings…

[@petemartinez7087]

❤loved it I think renntech will be my go to choice for tune on my cls 550 only thing I wish my car had was the black interior

[@jmjsharwarko]

Hey I thought 🤔💭 I commented on this video!! That car is slowwww 🦥!! 🤫💯🏁 Awesome video as always buddy 👊

[@clevelandaeromotive]

@@jmjsharwarko not yet, good buddy. Yeah, your ST thinks it’s “slow”. Ohhhh! Did I go there?? ;)

[@collinanderson7747]

Amazing and detailed. Thanks for putting in all this work for the car and us!

[@clevelandaeromotive]

Thank you for watching!

[@themainmanify]

thanx for posting this.i have a 2008 clk 550,been thinking about the ecu upgrade.1,200 bucks for a 20 HP upgrade is a hard pill to swallow.after watching this vid,i think i'll be able to swallow it

[@darrenwilliamson7944]

Awesome vids. Thanks for sharing. Where did you get your front splitter for your CLS? I have an s550 m278 and I'm looking to put a splitter on mine.

[@clevelandaeromotive]

www.rwcarbon.com/mercedes-w218-cls550-carbon-fiber-lip.html

[@johnsuperfresh]

How many miles is on it now and how well has it held up? Bonus question. Any air ride issues yet?? Thanks!

[@clevelandaeromotive]

@@johnsuperfresh 62,000 miles. Just did the 60,000 service. Holding up very well. Little signs of age starting to emerge. Nothing of concern though. Air ride: intact. Original airbags. No problems. I should do an update video, shouldn’t I.

[@johnsuperfresh]

@@clevelandaeromotive Absolutely! Thanks, I'll be looking forward to it!

[@milenasantacruz]

I love the intro 🤣❤

[@richardfoulkes3083]

My E500 “surfs” beautifully on the torque at lows revs and is very linear and easy to drive. Does the tune do the same and not exchange power for drive ability ?

[@eflowers410]

That front lip. Where from? Fits perfectly

[@clevelandaeromotive]

RW Carbon www.rwcarbon.com/mercedes-w218-cls550-carbon-fiber-lip.html

[@allenmarston1015]

Interesting info on the tune. Had no clue.

[@larryhand5892]

Nice video, I assume you’ll do a driver’s review of how the car has improved?

[@clevelandaeromotive]

Yup. That’s my video from a month ago. The one with the “Zero to 60 Time” thumbnail.

[@moreeshintaro6804]

Where did you get the front bumper lip?

[@clevelandaeromotive]

RW Carbon www.rwcarbon.com/mercedes-w218-cls550-carbon-fiber-lip.html

[@nomad5600]

How much throttle can a stock 550 handle? Ive been going easy and never fully floored mine yet its over 100k so what would you say. Its been well maintained. Im 3rd owner

[@clevelandaeromotive]

With the RENNtech ECU tune, at the Bradenton Raceway, I floored it off the line all four times. Although admittedly, I always roll on the power from a stand still in day-to-day traffic. So, in all reality, I really don't know. I think the stock ECU on a CLS 550 really cant harm the car's power train.

[@gregoryfranks7347]

that gold wagon rs60 is one of only a handful. sienfeld has one of the other 5 sedan though. i believe that and the early sec amg belong to the MB market guy blakely. he is a big help to the premerger scene. thanks so much for showing this to us!!

[@clevelandaeromotive]

I enjoyed making the video for you guys since I was utterly amazed at the historic vehicles they have there. Glad you liked it.

[@gregoryfranks7347]

i wish everbody would ask if they could go and do a quick video at the shop thats working on their cars @@clevelandaeromotive

[@MrXbox323]

It would be awesome if we can race some day to compare my tune to yours my cls 550 is tune by weistec

[@clevelandaeromotive]

I've heard good things about Weistec as well. Enjoy!

[@sakoniko323]

Whats up brother. Nice car. I have a 2013 s550 thinking of getting the tune. I was just wondering if u think it will cause the car to have problems . Will the differential ands trans hold up ?

[@clevelandaeromotive]

A car with a tune will hold up as well as you treat it. Can you go out and blow your engine with a RENNtech ECU tune?? Just as easily as you can with a stock tune. If your out there treating your car like poop, constantly racing it, neglecting it, expect engine trouble. If you maintain and care for your car well, a RENNtech ECU tune will take no more miles off your car than a stock tune.

[@charmantprince7483]

Anyone know how much power the m278 can handle reliably?

[@clevelandaeromotive]

Considering the block walls are thick enough to be bored out to 5.5 litres for the AMG’s M157… a LOT more than any Mercedes Benz factory application places on the M278. It’s well known as an “over-built” engine. Anyone else?

[@patienceisalifesaver9582]

What year do you have

[@clevelandaeromotive]

@@patienceisalifesaver9582 2014

[@trentdawg2832]

Even an 80’s 420/500/560 sel would be cool with an LS swap

[@gregoryfranks7347]

look at those recaro cse's!!!!