Turbo back downpipes worth labor and cost?

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Oct 10, 2021 | 10:20 PM
  #26  
Hey guys,

​​​​​​I Had Turbobacks on my E63. I posted it in the w212 forum. The difference between Turbobacks and cat delete downpipes was drastic. The maximum horsepower wasnt what was such a change but all across the powerband it makes the M157s torque accessible immediately. It feels like an NA engine with world bending torque. Also, the car sounds like a raspy ripping raging muscle car. I had turbobacks and resonator only and it sounded like a w204 C63 with headers. I unfortunately totalled that car and if I could do the same mods to my current CLS63S, I'd do it again.
Reply 1
Jan 17, 2022 | 11:01 PM
  #27  
Turbo Bridge question
I have a 2014 cls550(m278), my turbo bridges are 2.5 inches in diameter and my MBH downpipes are 3 inches in diameter. Is it okay to run 3 inches even though the bridges are only 2.5 ? I honestly chose 3 inches because of the sound difference overall but I would love to hear some feedback!
Reply 0
Jan 18, 2022 | 09:33 AM
  #28  
All those downpipes without bridge pipes are waste of money, just decat your original one and you get the same output as those downpipes cause the upper 2.5" section remain the same, the true downpipes are the one with back turbo pipes.
Reply 1
Jan 18, 2022 | 11:35 AM
  #29  
cutouts
so my downpipes have cutouts that are 2.5 inches so they can fit the bridges, I think it’s still a good investment overall, there’s no point to upgrade the bridges unless upgrading to m157 turbos.
Reply 0
Jan 20, 2022 | 09:59 PM
  #30  
I will be installing VRP bridgepipes and downpipes on my cls550 in the coming weeks. I plan to get it on the dyno before and after so I atleast have a baseline of the numbers this mod makes. It is still hard to find any concrete evidence of the benefits the mod has.
Reply 1
Jan 20, 2022 | 11:54 PM
  #31  
Quote: I will be installing VRP bridgepipes and downpipes on my cls550 in the coming weeks. I plan to get it on the dyno before and after so I atleast have a baseline of the numbers this mod makes. It is still hard to find any concrete evidence of the benefits the mod has.
these will have zero effect aside from sound without a tune. Dowpipes alone with tune are good for 30-45 hp with tune which is substantial.

Reply 0
Jan 21, 2022 | 05:32 PM
  #32  
I will have mine installed also from vrp
Reply 0
Jan 22, 2022 | 01:18 PM
  #33  
Are the VRP version available for awd? Website says,

Fitment:

E Class 2012-2018 with M157 and M278 Motors, RWD

CLS class 2012-2018 with M157 and M278 Motors, RWD
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Jan 24, 2022 | 05:34 AM
  #34  
They said it will fit
Reply 0
Aug 2, 2022 | 02:16 PM
  #35  
.
Reply 0
Aug 2, 2022 | 02:22 PM
  #36  
Please please tell me, who made this for you??

Quote: Agreed, that guy didn’t even have turbo backs.
I am doing proper turbo backs on my S63 M157.
Already have stage 2 tune and full exhaust with downpipes





Reply 0
Aug 8, 2022 | 04:15 PM
  #37  
HMS Tuning in Germany, they call it headers, but it’s turbo-backs, I think they added about 20-30 horses.
Reply 1
Mar 26, 2025 | 09:46 AM
  #38  
Quote: HMS Tuning in Germany, they call it headers, but it’s turbo-backs, I think they added about 20-30 horses.
They looks really amazing and with a good flow. HMS is not far away from me..
Could you tell me anything about the price?
Reply 1
May 17, 2025 | 08:05 PM
  #39  
New here. Curious question as I can't find it in the owners manual or anywhere online. Does the turbo coolant reservoir take the same coolant as the main engine coolant reservoir? Just want to make sure. 2014 Cls550 4matic. Appreciate it.
Reply 0
May 22, 2025 | 08:14 PM
  #40  
Quote: They looks really amazing and with a good flow. HMS is not far away from me..
Could you tell me anything about the price?

same
Reply 1
Oct 10, 2025 | 02:27 PM
  #41  
I just finished working on my own, custom downpipes. They are currently being ceramic coated, so not 100% complete. I decided to give 3d-printing a try and here's what I have done with that (more photos of completed pipes to follow). I also have charge pipes modified for a 52mm BOV.


















Reply 1
Oct 10, 2025 | 02:36 PM
  #42  
Nice hopefully prices are responsible compared to to everyone else.
Reply 0
Oct 10, 2025 | 02:46 PM
  #43  
not sure how many people would actually be interested in them. the pipes need custom exhaust work and are not "plug and play" so to speak. the size difference between the 3" and stock are almost double. I will add a side-by-side comparison below to illustrate that. the pipe on the left is stock cat inlet. it would easily fit inside the downpipe with plenty of room left over
Reply 0
Oct 15, 2025 | 05:31 PM
  #44  
Quote: I just finished working on my own, custom downpipes. They are currently being ceramic coated, so not 100% complete. I decided to give 3d-printing a try and here's what I have done with that (more photos of completed pipes to follow). I also have charge pipes modified for a 52mm BOV.

















Could you tell me the price of the BOW Kit?
Reply 0
Oct 16, 2025 | 01:54 PM
  #45  
I would need to think about it. all those pipes on my pictures are actually custom fabrication work for my own use. I could figure out the fabrication if anyone would desperatly want something done.. would need charge pipes as cores. the BOV itself is around €400 or so, I believe. oh yeah.. the downpipes are coming together - here's an image of my newly ceramic coated downpipe.
Reply 1
Oct 16, 2025 | 04:44 PM
  #46  
[how much for the charge pipes






QUOTE=ervg;9224587]I would need to think about it. all those pipes on my pictures are actually custom fabrication work for my own use. I could figure out the fabrication if anyone would desperatly want something done.. would need charge pipes as cores. the BOV itself is around €400 or so, I believe. oh yeah.. the downpipes are coming together - here's an image of my newly ceramic coated downpipe.
[/QUOTE]
Reply 1
Feb 26, 2026 | 02:09 PM
  #47  
Any updates on your down pipes.
Reply 0
Feb 28, 2026 | 09:52 AM
  #48  
There’s still quite a bit to sort out before the engine and pipes go back into the car. I want everything properly tested and validated before even thinking about offering them to anyone else.

By the way, have you had a chance to check out my build thread? There’s a lot of detailed info in there:

https://mbworld.org/forums/cls-coupe...nce-build.html
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