W463A G63 muffler delete? Anyone done? Issues?
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W463A G63 muffler delete? Anyone done? Issues?
Curious if anyone has any experience doing a muffler delete on the new G63 and if there are any issues, CELs or anything along with what happens to the exhaust button?
Thanks
Thanks
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I saw a YouTube video not long ago where some kids took the mufflers off their Dad's G and drove around - no CELs. You can probably find it there.
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Spoke to the guys from the YouTube video nice owner and he has a YouTube channel.
Apparently one of their friends did the muffler delete on his 20 g63 and after a couple days the truck went into limp mode which I'm assuming is due to the missing exhaust valve bring unplugged.
This is what I was looking for as all muffler delete posts before were of previous gen g63s.
Apparently one of their friends did the muffler delete on his 20 g63 and after a couple days the truck went into limp mode which I'm assuming is due to the missing exhaust valve bring unplugged.
This is what I was looking for as all muffler delete posts before were of previous gen g63s.
Last edited by marcolarco52; Dec 5, 2020 at 03:25 PM.
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Spoke to this guys from the YouTube video nice owner and he has a YouTube channel.
Apparently one of their friends did the muffler delete on his 20 g63 and after a couple days the truck went into limp mode which I'm assuming is due to the missing exhaust valve bring unplugged.
This is what I was looking for as all muffler delete posts before were of previous gen g63s.
Apparently one of their friends did the muffler delete on his 20 g63 and after a couple days the truck went into limp mode which I'm assuming is due to the missing exhaust valve bring unplugged.
This is what I was looking for as all muffler delete posts before were of previous gen g63s.
aaand easily reversible. ( cheap too )
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Spoke to this guys from the YouTube video nice owner and he has a YouTube channel.
Apparently one of their friends did the muffler delete on his 20 g63 and after a couple days the truck went into limp mode which I'm assuming is due to the missing exhaust valve bring unplugged.
This is what I was looking for as all muffler delete posts before were of previous gen g63s.
Apparently one of their friends did the muffler delete on his 20 g63 and after a couple days the truck went into limp mode which I'm assuming is due to the missing exhaust valve bring unplugged.
This is what I was looking for as all muffler delete posts before were of previous gen g63s.
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Cheers
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If that's the case it is easy to remove the valve module from the factory muffler assembly and then you can just zip tie it up out of the way. There aren't any sensors or anything running to the muffler, so if it just needs the valve module connected it's an easy fix. I'm running an aftermarket valved exhaust, but I think it could stand to be louder. I might have my mechanic fab up a straight pipe with some tips on it just to get it louder. I took off the mufflers and started it while it was on the lift and it wasn't terribly noisy. Seemed like it would be bearable, but not sure if there would be drone at highway speeds.
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You would never know it was there. There is a metal clip that holds the factory wire for the module to the shield under there. You can probably fasten it to that somehow. It would be just fine. Three nuts hold the module onto the valve. Pretty easy to remove.
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Anyone else do this on their 19+ g63, only worry is throwing any codes.
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You won’t regret it. The best thing is that if you drive it in comfort mode the valves still help to quiet the exhaust. This is in my “to do” list for the G.
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Is there a reason you don't just get an aftermarket valved exhaust? I did a Fi Exhaust valved kit and it sounds good. Not obnoxiously loud, but definitely more aggressive than stock.
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I would think deleting the secondary cat would have more chance of throwing codes than deleting the muffler. I haven't crawled under there to look, but I would assume there is a sensor after the second cat, but before the muffler. If you delete that cat I would think that sensor would take issue with it.
Is there a reason you don't just get an aftermarket valved exhaust? I did a Fi Exhaust valved kit and it sounds good. Not obnoxiously loud, but definitely more aggressive than stock.
Is there a reason you don't just get an aftermarket valved exhaust? I did a Fi Exhaust valved kit and it sounds good. Not obnoxiously loud, but definitely more aggressive than stock.
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I would think deleting the secondary cat would have more chance of throwing codes than deleting the muffler. I haven't crawled under there to look, but I would assume there is a sensor after the second cat, but before the muffler. If you delete that cat I would think that sensor would take issue with it.
Is there a reason you don't just get an aftermarket valved exhaust? I did a Fi Exhaust valved kit and it sounds good. Not obnoxiously loud, but definitely more aggressive than stock.
Is there a reason you don't just get an aftermarket valved exhaust? I did a Fi Exhaust valved kit and it sounds good. Not obnoxiously loud, but definitely more aggressive than stock.
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secondary cats have no sensors. I have done that mode to my 18 Amg Gtr and to my 20 Gtr pro. I have others friends that have done the same to another Gtr. No issues whatsoever. I would advice to try to remove the secondary cats before you spend big bucks on a fancy peace of steel.
Thanks again Ray I appreciate it!
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That being said, deleting the secondary cat is intriguing. @V8ray did you just have a muffler shop cut out the secondary Cat and install a new piece of pipe in place of it, or did you buy a new pipe entirely that only has one Cat? The Cats on the G63 are built into the downpipe, so deleting the secondary Cat would likely require removing the downpipe to cut the secondary Cat out. From my cursory investigation, getting at the upper bolts on the downpipe isn't very easy.
I also haven't confirmed this, but from what I can see on the G63 (US version) I think there might only be one Cat. I can only see one when I get under there to look. It's entirely possible there is a secondary Cat way up high near where the downpipe connects the exhaust manifold, but I wasn't able to see that from crawling under the truck and looking at it. This came up in another thread where a Euro G63 had the OPF removed. In the US we would have a secondary Cat instead of an OPF, but that thread is what had me getting under there to look and see what was on the US model. I was only able to find one Cat.
Last edited by The Butcher; Dec 7, 2020 at 07:05 AM.
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Totally understand. For what it's worth, the Fi Exhaust is about $5K, and you can swap it out in your driveway in about 45 minutes. Literally one muffler clamp and three bolts for the actuator on each side. You could transfer that to the next one easily. If you end up being interested in the Fi let me know.
That being said, deleting the secondary cat is intriguing. @V8ray did you just have a muffler shop cut out the secondary Cat and install a new piece of pipe in place of it, or did you buy a new pipe entirely that only has one Cat? The Cats on the G63 are built into the downpipe, so deleting the secondary Cat would likely require removing the downpipe to cut the secondary Cat out. From my cursory investigation, getting at the upper bolts on the downpipe isn't very easy.
I also haven't confirmed this, but from what I can see on the G63 (US version) I think there might only be one Cat. I can only see one when I get under there to look. It's entirely possible there is a secondary Cat way up high near where the downpipe connects the exhaust manifold, but I wasn't able to see that from crawling under the truck and looking at it. This came up in another thread where a Euro G63 had the OPF removed. In the US we would have a secondary Cat instead of an OPF, but that thread is what had me getting under there to look and see what was on the US model. I was only able to find one Cat.
That being said, deleting the secondary cat is intriguing. @V8ray did you just have a muffler shop cut out the secondary Cat and install a new piece of pipe in place of it, or did you buy a new pipe entirely that only has one Cat? The Cats on the G63 are built into the downpipe, so deleting the secondary Cat would likely require removing the downpipe to cut the secondary Cat out. From my cursory investigation, getting at the upper bolts on the downpipe isn't very easy.
I also haven't confirmed this, but from what I can see on the G63 (US version) I think there might only be one Cat. I can only see one when I get under there to look. It's entirely possible there is a secondary Cat way up high near where the downpipe connects the exhaust manifold, but I wasn't able to see that from crawling under the truck and looking at it. This came up in another thread where a Euro G63 had the OPF removed. In the US we would have a secondary Cat instead of an OPF, but that thread is what had me getting under there to look and see what was on the US model. I was only able to find one Cat.
For the G ( I haven’t cut them yet ) you can see on this video the long exhaust muffler and shortly after that is the secondary cats ( note it has no sensors ) the primary cats are located closer to the engine like you mentioned and it’s really hard to access them in the event you want to replace them and it would most likely cause you check engine lights if you don’t tune it for those modifications.
My opinion is this; it’s a no brainer if you want louder exhaust start with this easily reversible modification and if you feel you want more then replace the muffler.
I had two cayenne turbos in the past and did the same modification. Best bang for the buck. Only on my second cayenne I installed a tubi muffler and regretted Quicky. ( too much for a daily driver )
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Not sure if the video was uploaded but basically this is the secondary cats located next to the big muffler.
The primary ones are higher up very close to the engine almost towards the hot V of the engine.
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First video here is a C63S with ASM Module (lets the exhaust be valves on that car be fully open) and a secondary cat delete:
Second video here is a GLC63S with just the secondary cat delete (has a before and after):
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Ya that's perfect no O2 sensors near that way up high by the first cat, shouldn't be more then $120-$150 done on both sides simple straight piece of pipe 2 cuts and welding. Seen some videos on youtube of other amgs.
First video here is a C63S with ASM Module (lets the exhaust be valves on that car be fully open) and a secondary cat delete: 2019 Facelift C63S with ASR Module + Secondary Cat Delete
Second video here is a GLC63S with just the secondary cat delete (has a before and after): GLC 63AMGs with secondary cat delete
First video here is a C63S with ASM Module (lets the exhaust be valves on that car be fully open) and a secondary cat delete: 2019 Facelift C63S with ASR Module + Secondary Cat Delete
Second video here is a GLC63S with just the secondary cat delete (has a before and after): GLC 63AMGs with secondary cat delete
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I won't be getting my 21 for a few months goes into production end of January so it'll be a bit of time. Shouldn't get any CEL as there's no sensors affected by the secondary cat just removes more emissions and quiets the exhaust some more.
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