S63 AMG 4MATIC Coupe, S65 AMG Coupe (C217), Convert. (A217) 2014 -2021

Turbo Back (Bridge) Downpipes S63 C217 - almost done/major mod

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Old Apr 22, 2021 | 02:40 PM
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S63 COUPE M157
Turbo Back (Bridge) Downpipes S63 C217 - almost done/major mod

Hi guys,

just wanted to share a couple of photos of turbo back (bridge) downpipes mod. Since I already have renntech stage 2 ecu tune (699bhp/1050nm) and full exhaust with 200 cel catted downpipes, I decided to go one step higher and change stock bridge downpipes with larger ones from HMS Performance (German based tuner). Originally wanted Weistec turbo backs, but decided to go for HMS as they don’t require different engine mounts.

After reading my posts about this mod on M157 engines (E/CLS63) I decided that it’s worth the hassle.

The car is still in the workshop, but I wanted to share a couple of photos with you of the process. For this mod both engine and transmission have to be dropped.

With renntech stage 2 ecu tune, full exhaust/downpipes + bridges - I am hoping to be in the territory of about 750 bhp.











Last edited by GMBALL; Apr 26, 2023 at 05:34 AM.
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Old May 24, 2021 | 08:04 AM
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From: Northbrook Il
2017 S63 AMG Coupe, Lexus lx570, Infinti fx45, c5 Z06, !990 300zx tt
Nice job! Where you able to meet your hp goal?
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Old May 24, 2021 | 01:24 PM
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S 63 Coupe, GLS 63
Any update on these? Source?
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Old Jul 4, 2022 | 04:25 PM
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S63 COUPE M157
These are HMS turbo backs. Currently have 760 bhp and close to 1200nm. The car is a monster.


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