GLC43 Downpipe options?
Super Member
Joined: Oct 2011
Posts: 690
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From: GA
X3 M40i
PM Shardul. He sells Mike Custom's Downpipes that fit the GLC43. They are pretty popular in the c63 and S-class coupe forums. Here's a quote from Shardul when I inquired about Catted version in PM.
"I would definitely get the catless version. Stock cats is where the restriction is. People choose the catted version if their car is not tuned, because a non catted down pipe will trigger the CEL with a tune.
About 40 to 50 hp with a ECU tune and catless version." - Shardul
Otherwise, you can go with the Weistec Cats. They are super expensive though. I have not installed the Cats as I am waiting to get my Service A completed first which will be middle of next month sometime. After my first service visit, I will get an ECU tune and downpipes installed.
"I would definitely get the catless version. Stock cats is where the restriction is. People choose the catted version if their car is not tuned, because a non catted down pipe will trigger the CEL with a tune.
About 40 to 50 hp with a ECU tune and catless version." - Shardul
Otherwise, you can go with the Weistec Cats. They are super expensive though. I have not installed the Cats as I am waiting to get my Service A completed first which will be middle of next month sometime. After my first service visit, I will get an ECU tune and downpipes installed.
Thread Starter
Newbie
Joined: Apr 2017
Posts: 8
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GLC43
PM Shardul. He sells Mike Custom's Downpipes that fit the GLC43. They are pretty popular in the c63 and S-class coupe forums. Here's a quote from Shardul when I inquired about Catted version in PM.
"I would definitely get the catless version. Stock cats is where the restriction is. People choose the catted version if their car is not tuned, because a non catted down pipe will trigger the CEL with a tune.
About 40 to 50 hp with a ECU tune and catless version." - Shardul
Otherwise, you can go with the Weistec Cats. They are super expensive though. I have not installed the Cats as I am waiting to get my Service A completed first which will be middle of next month sometime. After my first service visit, I will get an ECU tune and downpipes installed.
"I would definitely get the catless version. Stock cats is where the restriction is. People choose the catted version if their car is not tuned, because a non catted down pipe will trigger the CEL with a tune.
About 40 to 50 hp with a ECU tune and catless version." - Shardul
Otherwise, you can go with the Weistec Cats. They are super expensive though. I have not installed the Cats as I am waiting to get my Service A completed first which will be middle of next month sometime. After my first service visit, I will get an ECU tune and downpipes installed.
Thread Starter
Newbie
Joined: Apr 2017
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GLC43
What about the Brondex ones? Anyone have any experience with them?
https://brondexshop.com/products/mer...ted-down-pipes
https://brondexshop.com/products/mer...ted-down-pipes
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Joined: Oct 2011
Posts: 690
Likes: 84
From: GA
X3 M40i
Thread Starter
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Joined: Apr 2017
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GLC43
Mike Custom's downpipes can come catted. They are $650 for de-catted and add $300 for Catted. Follow the thread here https://mbworld.org/forums/c450-c43-...npipe-kit.html
Woah, someone in that thread asked about the GLC and they do fit!
Last edited by haunebu81; Mar 20, 2018 at 03:44 PM. Reason: Found out answer.
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Super Member
Joined: Oct 2011
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From: GA
X3 M40i
That was me who asked, which is why I am the only one replying to you lol 
There's only a handful of us that are actually modding the GLC43. If you are expecting to get a lot of answers on mods, visit the c43 section then ask the vender if said parts fit the GLC43 too.
There's only a handful of us that are actually modding the GLC43. If you are expecting to get a lot of answers on mods, visit the c43 section then ask the vender if said parts fit the GLC43 too.
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GLC43
Did you notice better sound after? Any extra power? More crackling and popping?
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Joined: Oct 2011
Posts: 690
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From: GA
X3 M40i
w205 c43 owners have no issues with the downpipes. Heard it was a pretty straight forward install and doesn't take that long. There's one or two bolts that need some greasing/WD40 to be loosen but not a big deal.
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From: GA
X3 M40i
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ML63 AMG
I haven't installed my downpipes yet (read my previous posts about waiting for Service A to be completed). Per the c43 guys, you will get more exhaust noise and you can hear more of the turbos spooling which is a good thing. I haven't heard of anyone losing popping and cracking sounds. If I was you, I would also do the resonator delete to compliment the downpipes. Your GLC43 should sound bad@ss . I can't wait to install my downpipes and ECU tune as I am itching for more power.
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From: Vegas and Vancouver, BC
.
That was for the w205 c63. For some reason the tranny is in the way and needs to be dropped which explains why there aren't many 63 owners doing said mod. It's still popular but listening to the horror stories on that forum make me cringe. I am wondering if the GLC63 variants will have the same issue.
w205 c43 owners have no issues with the downpipes. Heard it was a pretty straight forward install and doesn't take that long. There's one or two bolts that need some greasing/WD40 to be loosen but not a big deal.
w205 c43 owners have no issues with the downpipes. Heard it was a pretty straight forward install and doesn't take that long. There's one or two bolts that need some greasing/WD40 to be loosen but not a big deal.
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Joined: Feb 2017
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From: Northeast, USA
GLC43, GTI, X3, Mazda3
Drove an X3M40i this past weekend and was pretty impressed. Pulled well and crack/pops were insane. Ha. Steering felt better than the GLC, as well.
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2013 Nissan GTR Black Edition, 2017 Mercedes C43 AMG
Here is a link:
https://shop.amrperformance.com/prod...mance-package/
We even offer handheld programmers that allow you to tune your vehicle in the comfort of your own home!
Don't forget..........FINANCING IS AVAILABLE!
Contact me to unleash #beastmode
Senior Member
Joined: Oct 2018
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From: Massachusetts
Blk/Blk GLC43 AMG WAGON
Until this thing is my sons there will be no crazy **** happening on this wagon anytime soon. One and done. For all you guys thinking a down-pipe is a consideration please research precious metals found in stock cat's. Then research the cost. Have a good weekend everyone ! TRIFECTA !!!!
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Joined: Mar 2021
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AMG GLC63
RedStar has catless for AMGC43 in stock. I used them for my catted Quadrifoglio downpipes - good stuff:
$1,030
https://redstarexhaustusa.com/merced...eld-heatshield
$1,030
https://redstarexhaustusa.com/merced...eld-heatshield
