Catted Downpipe Options

freshxdough · 03-19-2020, 12:03 AM

Quote:

Originally Posted by suby01

Quote:

Originally Posted by freshxdough

I have a CEL after one day of clearing faults and going for a drive. Sets pretty quick. I don't think this 200cel VRSF Catted Downpipe will ever not throw a CEL.

I just check faults every other week or so to make sure I don't have any other faults hidden behind my CEL lol

Quote:

Originally Posted by Torinalth

same, ER catted pipe is 200cel and throws a code after less than 10 min driving. I have a spacer for the sensor but wanted to try without it first. I'll try the spacer when its warmer out. heard 300cel pipes work well, and there is another company that someone advertised that was guaranteed not to trigger the fault, it was on this forum.... maybe by RGsport shop? been a couple months. Either way, love my ER pipe.

One note on install, I'd personally get another Vband clamp and jbweld the bolt to the collar, I just barely got it tight enough before the head started spinning from the vband clamp ring.

That was going to to be my next question. Did you guys consider O2 sensor spacers?

I would like to get one but honestly I don't want to get a cheap piece of shit that is gonna end up welding to my Downpipe after xxxxx miles. I honestly haven't seen any quality products. In my particular instance I'm not sure which one I would want. The 90* or the straight. I'm pretty sure the 90* based on the fitment though.

I would rather do a mini cat if I could where the spacer itself has like a mini cat in it and actually does filter some of the gases and provides a better signal to the post 02 sensor. Sometimes with spacer alone you can still trigger a CEL but I don't have personal experience with that

nog0odd3ed@gmail.com · 08-20-2020, 01:17 PM

I lease my X3M440i, and was wondering if without a dP is the bootmod3 tune even worth it? Or is a catted dP better first without a tune and then add a tune later?

or should I forget about a DP install since it’s a lease?

freshxdough · 08-20-2020, 07:37 PM

Quote:

Originally Posted by nog0odd3ed@gmail.com

I lease my X3M440i, and was wondering if without a dP is the bootmod3 tune even worth it? Or is a catted dP better first without a tune and then add a tune later?

or should I forget about a DP install since it’s a lease?

With a Catted Downpipe alone you can get a CEL. Especially with 200cel Downpipe. I also used an 02 sensor mini cat on my rear 02 sensor and didn't have much luck.

To take advantage of the Catted Downpipe or catless Downpipe a tune is recommended. I had my Catted Downpipe on for like 7 months. Other than a CEL and more exhaust noise and burbles I haven't had any issues. With a tune you can code out the CEL for 02 sensor related faults

r33_RGSport · 08-20-2020, 08:49 PM

Quote:

Originally Posted by nog0odd3ed@gmail.com

I lease my X3M440i, and was wondering if without a dP is the bootmod3 tune even worth it? Or is a catted dP better first without a tune and then add a tune later?

or should I forget about a DP install since it’s a lease?

If you don't want to do DP, piggyback may be one of your option.

nog0odd3ed@gmail.com · 08-27-2020, 11:48 AM

Quote:

Originally Posted by r33_RGSport

Quote:

Originally Posted by nog0odd3ed@gmail.com

I lease my X3M440i, and was wondering if without a dP is the bootmod3 tune even worth it? Or is a catted dP better first without a tune and then add a tune later?

or should I forget about a DP install since it's a lease?

If you don't want to do DP, piggyback may be one of your option.

however my concern is how easy / difficult it will be to remove stock DP and then have to re-i stall when it's time to turn the lease.

Bouxie · 08-27-2020, 12:08 PM

Bouxie · 08-27-2020, 12:09 PM

Bouxie · 08-27-2020, 12:12 PM

Artwork

r33_RGSport · 08-27-2020, 12:52 PM

Quote:

Originally Posted by nog0odd3ed@gmail.com

however my concern is how easy / difficult it will be to remove stock DP and then have to re-i stall when it's time to turn the lease.

On B58, it is quite easy.
I would say 1-2 hours, depending on your skill.

freshxdough · 09-02-2020, 02:53 PM

Quote:

Originally Posted by nog0odd3ed@gmail.com

Quote:

Originally Posted by r33_RGSport

Quote:

Originally Posted by nog0odd3ed@gmail.com

I lease my X3M440i, and was wondering if without a dP is the bootmod3 tune even worth it? Or is a catted dP better first without a tune and then add a tune later?

or should I forget about a DP install since it's a lease?

If you don't want to do DP, piggyback may be one of your option.

however my concern is how easy / difficult it will be to remove stock DP and then have to re-i stall when it's time to turn the lease.

Realistically you would need a lift to do it. My buddy and I removed my VRSF catted downpipe and installed my new CTS catted downpipe last weekend and it took us about 2 hours total. The biggest pain is getting the old one off while lying on the ground between the car and driveway and pushing the exhaust back enough to separate from the cat. You have to loosen the exhaust system and push it back a little. If you have two people then install is much easier. You have someone at the top holding the cat against the turbo and clocking it in the necessary direction. Person on bottom feeds the car pipe into the exhaust pipe and then secure it. This is with two BMW master techs with correct tools and experience with downpipes.

PCM2810 · 09-02-2020, 09:40 PM

Quote:

Originally Posted by freshxdough

Realistically you would need a lift to do it. My buddy and I removed my VRSF catted downpipe and installed my new CTS catted downpipe last weekend and it took us about 2 hours total. The biggest pain is getting the old one off while lying on the ground between the car and driveway and pushing the exhaust back enough to separate from the cat. You have to loosen the exhaust system and push it back a little. If you have two people then install is much easier. You have someone at the top holding the cat against the turbo and clocking it in the necessary direction. Person on bottom feeds the car pipe into the exhaust pipe and then secure it. This is with two BMW master techs with correct tools and experience with downpipes.

Fro. Vrsf to cts... both catted ... why ?

freshxdough · 09-02-2020, 09:57 PM

Quote:

Originally Posted by PCM2810

Quote:

Originally Posted by freshxdough

Realistically you would need a lift to do it. My buddy and I removed my VRSF catted downpipe and installed my new CTS catted downpipe last weekend and it took us about 2 hours total. The biggest pain is getting the old one off while lying on the ground between the car and driveway and pushing the exhaust back enough to separate from the cat. You have to loosen the exhaust system and push it back a little. If you have two people then install is much easier. You have someone at the top holding the cat against the turbo and clocking it in the necessary direction. Person on bottom feeds the car pipe into the exhaust pipe and then secure it. This is with two BMW master techs with correct tools and experience with downpipes.

Fro. Vrsf to cts... both catted ... why ?

My VRSF downpipe catalyst material dislodged and pushed back. May have been attributed to my aggressive driving and burbles lol.

PCM2810 · 09-02-2020, 11:56 PM

Quote:

Originally Posted by freshxdough

My VRSF downpipe catalyst material dislodged and pushed back. May have been attributed to my aggressive driving and burbles lol.

All stock and vrsf cat didnt last 1 year ?

freshxdough · 09-03-2020, 10:52 PM

2020 with CTS catted downpipe

dinan5m3 · 10-20-2021, 11:20 AM

Quote:

Originally Posted by freshxdough

I would like to get one but honestly I don't want to get a cheap piece of shit that is gonna end up welding to my Downpipe after xxxxx miles.

Same here...

Bit $$$

... but coming down to following two, CG Precision and AA,

Billtham · 08-20-2022, 02:00 AM

If anyone is interested, The CG Precission DS-1 downpipe for B58 engine fits the X3m40i. I have just installed it and it sounds so much better than stock.

The DS-1 is a 200 Cell Catted downpipe. It also guarantee no CEL which is great if you all dont want to put a tune to get rid of the CEL.

Pretty easy removal and install. I recommend geting a new gasket as when I tried reusing mine, it was flaking off and kind of sketch, but it still worked. Better be safe than sorry.

I cant upload video clips, but it sounds insane

Link to where i bought the downpipe - https://x-ph.com/cg-precision-ds-1-h...npipe-bmw-b58/

Link to original post images - https://x3.xbimmers.com/forums/showthread.php?t=1948074

nbrewno · 01-20-2023, 09:07 AM

Does anyone think it's worth it to upgrade the downpipe on the B46? I feel like anytime there's a turbo having better exhaust flow always helps. Maybe it's not as big a gain as on the B58, but for $280 seems worth a try. I figure the downpipe, a good intake, and a Stage 1 tune should hopefully give me close to 50hp.

Crudowns · 01-21-2023, 11:02 AM

I've read that using a 400 cell catted downpipe won't trigger the CEL.

Active Autowerkes out of Miami makes one: https://store.activeautowerke.com/pr...atted-downpipe

The ones that are less (e.g. 300 cell and 200 cell) will still trigger a CEL.

Anyone else confirm/know this to be true?

mike@x-ph.com · 01-21-2023, 11:16 AM

Quote:

Originally Posted by Crudowns

I've read that using a 400 cell catted downpipe won't trigger the CEL.

Active Autowerkes out of Miami makes one: https://store.activeautowerke.com/pr...atted-downpipe

The ones that are less (e.g. 300 cell and 200 cell) will still trigger a CEL.

Anyone else confirm/know this to be true?

The check engine light has more to do with the cats' quality than CEL.

If you use a low-quality 400 CEL cat, it will still trigger the check engine light.

Active Autowerke uses GESI cats; these are the highest quality cats on the market (also the only ones that are EPA approved).

They used the 300 GESI cats for some time without any issues, but on the newer chassis, they started triggering the check engine light.

Active replaced all the ones that triggered the CEL for free and now only uses the 400 CEL GESI Version 2.

No issues with hundreds of them sold, maybe thousands at this point.

Crudowns · 01-21-2023, 12:06 PM

Quote:

Originally Posted by mike@x-ph.com

The check engine light has more to do with the cats' quality than CEL.

If you use a low-quality 400 CEL cat, it will still trigger the check engine light.

Active Autowerke uses GESI cats; these are the highest quality cats on the market (also the only ones that are EPA approved).

They used the 300 GESI cats for some time without any issues, but on the newer chassis, they started triggering the check engine light.

Active replaced all the ones that triggered the CEL for free and now only uses the 400 CEL GESI Version 2.

No issues with hundreds of them sold, maybe thousands at this point.

Thanks for clarifying. I plan to install their new 400 cell downpipe at some point, unless you have other options that are as high quality and don't trigger the CEL.

mike@x-ph.com · 01-21-2023, 12:29 PM

Quote:

Originally Posted by Crudowns

Thanks for clarifying. I plan to install their new 400 cell downpipe at some point, unless you have other options that are as high quality and don't trigger the CEL.

The active autowerke downpipe is the best option in my opinion.

GT4981 · 02-27-2023, 09:48 AM

Quote:

Originally Posted by mike@x-ph.com

The active autowerke downpipe is the best option in my opinion.

Mike, better than the CG Precision DS-1 DP, but that one I believe is 200 CEL?

08-20-2020, 01:17 PM	#46
nog0odd3ed@gmail.com Private First Class 50 Rep 144 Posts Drives: 2023 X5 40i Msport Join Date: Jun 2016 Location: Austin, TX iTrader: (0)	So without a downpipe is a tune worth it? I lease my X3M440i, and was wondering if without a dP is the bootmod3 tune even worth it? Or is a catted dP better first without a tune and then add a tune later? or should I forget about a DP install since it’s a lease?
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08-27-2020, 12:08 PM	#50
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08-27-2020, 12:12 PM	#52
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09-03-2020, 10:52 PM	#58
freshxdough BMW Elite Master Tech \| HV Gen 5 \| HV Specialist 3682 Rep 4,300 Posts Drives: 2024 iX 50 \| 2020 X3 M40i Join Date: Mar 2017 Location: Orange County iTrader: (0)	2020 with CTS catted downpipe Attached Images
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08-20-2022, 02:00 AM	#60
Billtham New Member 5 Rep 5 Posts Drives: X3M40I Join Date: Aug 2022 Location: Canada iTrader: (0)	Aftermarket Downpipe CG Precission DS-1 If anyone is interested, The CG Precission DS-1 downpipe for B58 engine fits the X3m40i. I have just installed it and it sounds so much better than stock. The DS-1 is a 200 Cell Catted downpipe. It also guarantee no CEL which is great if you all dont want to put a tune to get rid of the CEL. Pretty easy removal and install. I recommend geting a new gasket as when I tried reusing mine, it was flaking off and kind of sketch, but it still worked. Better be safe than sorry. I cant upload video clips, but it sounds insane Link to where i bought the downpipe - https://x-ph.com/cg-precision-ds-1-h...npipe-bmw-b58/ Link to original post images - https://x3.xbimmers.com/forums/showthread.php?t=1948074
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01-20-2023, 09:07 AM	#61
nbrewno Private First Class 146 Rep 102 Posts Drives: 2023 X3 xDrive 30i Join Date: Jan 2023 Location: Philly Suburbs, PA iTrader: (0) Garage List 2023 BMW X3 [0.00]	Does anyone think it's worth it to upgrade the downpipe on the B46? I feel like anytime there's a turbo having better exhaust flow always helps. Maybe it's not as big a gain as on the B58, but for $280 seems worth a try. I figure the downpipe, a good intake, and a Stage 1 tune should hopefully give me close to 50hp.
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01-21-2023, 11:02 AM	#62
Crudowns Crudowns 26 Rep 34 Posts Drives: 2022 BMW X4 M40i Join Date: Aug 2022 Location: Boston, MA iTrader: (0)	I've read that using a 400 cell catted downpipe won't trigger the CEL. Active Autowerkes out of Miami makes one: https://store.activeautowerke.com/pr...atted-downpipe The ones that are less (e.g. 300 cell and 200 cell) will still trigger a CEL. Anyone else confirm/know this to be true?
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