18 E63s no boost 🤦♂️
MBWorld Fanatic!
Joined: Dec 2013
Posts: 2,394
Likes: 239
E63
Mate, I'm struggling now with the same issue - massive loss of power and boost, no error codes, nothing wrong during all the test and checks. I saw your post and noticed that you said your exhaust flaps were working fine and the actuators were moving freely. Now with this post you're saying the issue was exactly in the exhaust flaps. How have discovered that is the case while obviously the actuators and flaps works just fine? I'm confused.
Thanks for clarifying this to me.
Cheers!
Thanks for clarifying this to me.
Cheers!
![[Alex]'s Avatar](data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'><circle class='avatar-circle-default' fill='%2391c4b8' cx='25px' cy='25px' r='20px'></circle><text class='avatar-text-default' x='49%' y='53%' fill='white' text-anchor='middle' alignment-baseline='middle'>[</text></svg>)
Newbie
Joined: Jul 2022
Posts: 12
Likes: 3
E63s
I don't have a CPC tune. The actuators seems to be in perfect working condition - no error codes, flaps are moving (opening and closing) freely, when testing the actuators via Xentry everything seems to be fine. If there is a jammed actuator it will throw an error code for sure. I'm ready to bet that the issue will remain even if I replace both actuators with brand new ones.
Visited a very reputable tuner today, who is also a respected manufacturer of performance exhaust systems in Europe to thoroughly check the full exhaust - he didn't find anything wrong besides some squeaking sounds from the flaps, which disappeared after applying some high-temp ceramic grease to the leads. He said: "I can't really tell where and what the problem is, but rest assured, it isn't in your exhaust system"... 🤷♂️
My feeling is that it is either a melted catalytic converter(s) or a broken intake manifold. Dunno.🤷♂️
Going to visit another MB official workshop and will throw them the car until the problem is found.
I was just wondering for this guy (OP) how and why he decided to replace his actuators while his seemed to be working just fine.
Visited a very reputable tuner today, who is also a respected manufacturer of performance exhaust systems in Europe to thoroughly check the full exhaust - he didn't find anything wrong besides some squeaking sounds from the flaps, which disappeared after applying some high-temp ceramic grease to the leads. He said: "I can't really tell where and what the problem is, but rest assured, it isn't in your exhaust system"... 🤷♂️
My feeling is that it is either a melted catalytic converter(s) or a broken intake manifold. Dunno.🤷♂️
Going to visit another MB official workshop and will throw them the car until the problem is found.
I was just wondering for this guy (OP) how and why he decided to replace his actuators while his seemed to be working just fine.
Last edited by [Alex]; Jul 15, 2022 at 12:20 PM.
MBWorld Fanatic!
Joined: Feb 2017
Posts: 2,318
Likes: 1,217
From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
Are your turbos spinning but not building boost? I would look for a leak after the turbo. I had tuned car where the intercooler pipes would blow every once in awhile. Zero boost and felt like limp mode.
If the turbo is not spinning, how are the air filters? Look at turbo wheels yet? Any of the air sensors working incorrectly? Either something is unplugged, sensor issue, or a leak. Not much else to the tech if the tune is not the cause.
If the turbo is not spinning, how are the air filters? Look at turbo wheels yet? Any of the air sensors working incorrectly? Either something is unplugged, sensor issue, or a leak. Not much else to the tech if the tune is not the cause.
Newbie
Joined: Aug 2022
Posts: 2
Likes: 1
gt63s
but shop replaced my whole exhaust the issue was fixed for a bit then again half power all time today I got the CPC tune but still no full power did you fix your issue
