Catted DP’s installed on 2020 C63 Coupe
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From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
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C63s
@elitex so did you end up just leaving the cats from modal works DPs in or did you have them cut out and swapped for GESI cats ? Just wondering, as that’s what you had said you were planning in the other thread.
I was about to pull the trigger on the modal works catted DPs, but waited to see what happened....whether just needed a lil break in time or clear the initial code or what.
Not worried about the smell, just the CEL haha.
I am also planning to eventually do a stage 2 tune, and from what I can gather, it seems like running these HFL catted DPs would be fine, though correct me if I’m wrong. It’ll probably be a few months before I do the tune, as I want to get my wheel/tire suspension setup handled beforehand, but I want the bonus to sound from DPs in the interim.
Sounds like you are good now though. Haha, just making sure before I make final decision.
I was about to pull the trigger on the modal works catted DPs, but waited to see what happened....whether just needed a lil break in time or clear the initial code or what.
Not worried about the smell, just the CEL haha.
I am also planning to eventually do a stage 2 tune, and from what I can gather, it seems like running these HFL catted DPs would be fine, though correct me if I’m wrong. It’ll probably be a few months before I do the tune, as I want to get my wheel/tire suspension setup handled beforehand, but I want the bonus to sound from DPs in the interim.
Sounds like you are good now though. Haha, just making sure before I make final decision.
Thread Starter
Senior Member
Joined: Jan 2016
Posts: 385
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From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
@elitex so did you end up just leaving the cats from modal works DPs in or did you have them cut out and swapped for GESI cats ? Just wondering, as that’s what you had said you were planning in the other thread.
I was about to pull the trigger on the modal works catted DPs, but waited to see what happened....whether just needed a lil break in time or clear the initial code or what.
Not worried about the smell, just the CEL haha.
I am also planning to eventually do a stage 2 tune, and from what I can gather, it seems like running these HFL catted DPs would be fine, though correct me if I’m wrong. It’ll probably be a few months before I do the tune, as I want to get my wheel/tire suspension setup handled beforehand, but I want the bonus to sound from DPs in the interim.
Sounds like you are good now though. Haha, just making sure before I make final decision.
I was about to pull the trigger on the modal works catted DPs, but waited to see what happened....whether just needed a lil break in time or clear the initial code or what.
Not worried about the smell, just the CEL haha.
I am also planning to eventually do a stage 2 tune, and from what I can gather, it seems like running these HFL catted DPs would be fine, though correct me if I’m wrong. It’ll probably be a few months before I do the tune, as I want to get my wheel/tire suspension setup handled beforehand, but I want the bonus to sound from DPs in the interim.
Sounds like you are good now though. Haha, just making sure before I make final decision.
just get the modal works if you’re going to tune it.
Thread Starter
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Joined: Jan 2016
Posts: 385
Likes: 95
From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
@elitex so did you end up just leaving the cats from modal works DPs in or did you have them cut out and swapped for GESI cats ? Just wondering, as that’s what you had said you were planning in the other thread.
I was about to pull the trigger on the modal works catted DPs, but waited to see what happened....whether just needed a lil break in time or clear the initial code or what.
Not worried about the smell, just the CEL haha.
I am also planning to eventually do a stage 2 tune, and from what I can gather, it seems like running these HFL catted DPs would be fine, though correct me if I’m wrong. It’ll probably be a few months before I do the tune, as I want to get my wheel/tire suspension setup handled beforehand, but I want the bonus to sound from DPs in the interim.
Sounds like you are good now though. Haha, just making sure before I make final decision.
I was about to pull the trigger on the modal works catted DPs, but waited to see what happened....whether just needed a lil break in time or clear the initial code or what.
Not worried about the smell, just the CEL haha.
I am also planning to eventually do a stage 2 tune, and from what I can gather, it seems like running these HFL catted DPs would be fine, though correct me if I’m wrong. It’ll probably be a few months before I do the tune, as I want to get my wheel/tire suspension setup handled beforehand, but I want the bonus to sound from DPs in the interim.
Sounds like you are good now though. Haha, just making sure before I make final decision.
Now the CEL... I bought the Fabspeed mini cat spacers and they caused a different CEL. Either delayed response for secondary O2’s, stuck Rich and stuck lean. After looking at live data, looks the the mini cats are too big and they cause irregular reading.
Modal works sent me different spacers so will try those on and see what happens. I suspect the cats are working much better now and may just need small spacers to not trigger CEL.
will post back.
Thread Starter
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Joined: Jan 2016
Posts: 385
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From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
One thing is for sure.... Definitely not going back to stock. Sound is intoxicating at full tilt yet almost stock with valves closed. Already thinking about getting a full titanium exhaust. Either IPE or Akrapovic.
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C63s
Nice man. That was info I was wondering about.
love to hear results of new modal works spacers.
If goes well I may just get modal works, if not I was looking at the Armytrix ceramic coated 200cpsi catted DPs or Redstar w/ heatshield and 200 cpsi GESI cats. Restart has a $50 extra to add 02 sensor Restrictors, which im not sure if they are meant for helping this type situation with catted DPs and not triggering a CEL or meant to try limiting a CEL on catless. Both about 2800. Haha although if was able to get away with Modal works, saves me 1300 that I can apply to some KW HAS.
Either way I can't wait for that sound awakening and awaiting those spacer results.
Side note...all these companies charging extra 500 or so for heat shielding, couldn't you just get the upper portion ceramic coated and use header wrap for much less? Or even just header wrap or a similar aluminum foil type shielding?
love to hear results of new modal works spacers.
If goes well I may just get modal works, if not I was looking at the Armytrix ceramic coated 200cpsi catted DPs or Redstar w/ heatshield and 200 cpsi GESI cats. Restart has a $50 extra to add 02 sensor Restrictors, which im not sure if they are meant for helping this type situation with catted DPs and not triggering a CEL or meant to try limiting a CEL on catless. Both about 2800. Haha although if was able to get away with Modal works, saves me 1300 that I can apply to some KW HAS.
Either way I can't wait for that sound awakening and awaiting those spacer results.
Side note...all these companies charging extra 500 or so for heat shielding, couldn't you just get the upper portion ceramic coated and use header wrap for much less? Or even just header wrap or a similar aluminum foil type shielding?
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2019 C63 AMG
Nice man. That was info I was wondering about.
love to hear results of new modal works spacers.
If goes well I may just get modal works, if not I was looking at the Armytrix ceramic coated 200cpsi catted DPs or Redstar w/ heatshield and 200 cpsi GESI cats. Restart has a $50 extra to add 02 sensor Restrictors, which im not sure if they are meant for helping this type situation with catted DPs and not triggering a CEL or meant to try limiting a CEL on catless. Both about 2800. Haha although if was able to get away with Modal works, saves me 1300 that I can apply to some KW HAS.
Either way I can't wait for that sound awakening and awaiting those spacer results.
Side note...all these companies charging extra 500 or so for heat shielding, couldn't you just get the upper portion ceramic coated and use header wrap for much less? Or even just header wrap or a similar aluminum foil type shielding?
love to hear results of new modal works spacers.
If goes well I may just get modal works, if not I was looking at the Armytrix ceramic coated 200cpsi catted DPs or Redstar w/ heatshield and 200 cpsi GESI cats. Restart has a $50 extra to add 02 sensor Restrictors, which im not sure if they are meant for helping this type situation with catted DPs and not triggering a CEL or meant to try limiting a CEL on catless. Both about 2800. Haha although if was able to get away with Modal works, saves me 1300 that I can apply to some KW HAS.
Either way I can't wait for that sound awakening and awaiting those spacer results.
Side note...all these companies charging extra 500 or so for heat shielding, couldn't you just get the upper portion ceramic coated and use header wrap for much less? Or even just header wrap or a similar aluminum foil type shielding?
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From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
Honestly i feel like the heatshield is one of the most important parts so i wouldn't cut any corners on it. With the Turbo's being right in the middle on top and the DP's going right above that its like a heating blanket if not shielded properly. I looked at ceramic coating but the heatshielding i got on my Modal Works ones looked very similar to the stock ones which was enough for me. It's not worth the trouble if the dealership inspects and see it wasn't protected properly if say a warranty issue came up in the future.
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C63s
At least Modal Works doesnt seem to charge extra. I just mean some of these companies charge upwards of 500 for it, and I would think you could recreate that for much much less by simply buying the same type of heat shielding material and applying it or ceramic coating then applying that foil type shielding. By no means do I want to skimp on it, especially with the fact I live in Phoenix. Idk, just seems like alot for about 30-80$ worth of material haha. Albeit, ceramic is a bit more.
Another reason I like the Modal works. Hoping to hear good report from elitex about o2 spacers.
Speaking of heat, another thing I was contemplating was the CSF heat exchanger. Seems to have good reviews, only about 700, and seems to keep IATs down a good bit. Id like pickup one of those as we are heading into dreaded Phoenix summer.
Another reason I like the Modal works. Hoping to hear good report from elitex about o2 spacers.
Speaking of heat, another thing I was contemplating was the CSF heat exchanger. Seems to have good reviews, only about 700, and seems to keep IATs down a good bit. Id like pickup one of those as we are heading into dreaded Phoenix summer.
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2003 W211 E55, 2003 W220 S600
ok, so I decided to hold off for now. After driving for a while, 500+ miles. Smell is much better, it’s more in line with what I expected. I guess the Cats needed to break in, smell previously was almost the same level as Catless.
Now the CEL... I bought the Fabspeed mini cat spacers and they caused a different CEL. Either delayed response for secondary O2’s, stuck Rich and stuck lean. After looking at live data, looks the the mini cats are too big and they cause irregular reading.
Modal works sent me different spacers so will try those on and see what happens. I suspect the cats are working much better now and may just need small spacers to not trigger CEL.
will post back.
Now the CEL... I bought the Fabspeed mini cat spacers and they caused a different CEL. Either delayed response for secondary O2’s, stuck Rich and stuck lean. After looking at live data, looks the the mini cats are too big and they cause irregular reading.
Modal works sent me different spacers so will try those on and see what happens. I suspect the cats are working much better now and may just need small spacers to not trigger CEL.
will post back.
Thread Starter
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Joined: Jan 2016
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From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
Former Vendor of MBWorld
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From: Houston
2003 W211 E55, 2003 W220 S600
I though the whole reason people go with catted downpipe is not to get a CEL with the factory tune and not installing any O2 spacers etc Maybe it is the smell that people don't like due to catless ones.
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From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
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2019 C63 AMG
if it helps i have the catted DP's from Modal and don't get a CEL..but, i do have an aftermarket tune. The cats that most of the carriers come with are Euro spec'd high flow cats. These cars are tuned for US standards which may be more restrictive. A tune is an easy way to solve this though.
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From: Houston
2003 W211 E55, 2003 W220 S600
if it helps i have the catted DP's from Modal and don't get a CEL..but, i do have an aftermarket tune. The cats that most of the carriers come with are Euro spec'd high flow cats. These cars are tuned for US standards which may be more restrictive. A tune is an easy way to solve this though.
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C63S
Here you go. I’ll do another one soon from outside the car. I was by myself today.
https://youtu.be/D4Zr3YTeJOc
https://youtu.be/D4Zr3YTeJOc
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Let's see if I can't make some sense of this... A set of DP's cost what? ~$1,000 give or take? You then take it to the shop to have them installed. Going in, you decide to cut the OE cats and then install the new ones. So, what? Two hours labor at ~$100/hr sound right? So far, we're up to $1,200 for about 5HP.
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
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2019 AMG G63, 2020 AMG C63s Coupe
Let's see if I can't make some sense of this... A set of DP's cost what? ~$1,000 give or take? You then take it to the shop to have them installed. Going in, you decide to cut the OE cats and then install the new ones. So, what? Two hours labor at ~$100/hr sound right? So far, we're up to $1,200 for about 5HP.
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
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AMG C63s
Let's see if I can't make some sense of this... A set of DP's cost what? ~$1,000 give or take? You then take it to the shop to have them installed. Going in, you decide to cut the OE cats and then install the new ones. So, what? Two hours labor at ~$100/hr sound right? So far, we're up to $1,200 for about 5HP.
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
Thread Starter
Senior Member
Joined: Jan 2016
Posts: 385
Likes: 95
From: ATL
2020 C63S Coupe, 2021 Bmw X5M Competition
Let's see if I can't make some sense of this... A set of DP's cost what? ~$1,000 give or take? You then take it to the shop to have them installed. Going in, you decide to cut the OE cats and then install the new ones. So, what? Two hours labor at ~$100/hr sound right? So far, we're up to $1,200 for about 5HP.
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
Now comes a point where you want to sell or trade. What happens if the new owner or the agency won't buy it unless it goes back to stock. Back to the shop. But now, you need to drop the tranny, remove the aftermarket stuff and replace with either new or used OE pipes. Figure that will be about 4 hours labor at $100, plus the cost of OE pipes... Just found a used set for $1,000. Now you're up to, what? $1,400 to get it back to stock?
Total: $2,600 for 5HP............. Seriously?
You should hear one in person or better yet sit in one for a drive. You’ll see what I am talking about.
