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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications Logos Engineering Motorworks 200 Cell catted downpipe (Review & pics)

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      01-16-2021, 03:54 PM   #1
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Logos Engineering Motorworks 200 Cell catted downpipe (Review & pics)

I have a neighbor a few houses down who has a z4 and we talk performance since we share the b58 engine. One day I noticed his z4 sounded a bit meaner, louder and sexier as he drove by, more than usual. I chatted him up one day and he said he installed a catted downpipe from logos engineering motorworks. Never heard of them so decided to follow up. Seems like they make stuff for other labels but are rolling out product under their own brand, Since I got jealous of my neighbor…I decided to take the plunge :-P Below is my review, and yes I understand a lot of folks want sound clips and drive bys and rev’s, etc. but I really don’t use the net like that,so don’t have a you tube account to be linking and uploading videos. So I hope my description will suffice until someone uploads a video of their own.
I previously had a vrsf catless pipe on my f30 b58 and although the quality was ok, it developed a hairline leak where the flex pipe meets the main body of the DP, weld didn’t hold up?, don’t know, but went with a different brand before I sold the car. This was after 2k miles (I was tuned), and I never got used to the nasty droney rasp cat-less pipes have, along with the obvious smell. Maybe mine was a one off batch. My z4 neighbor has had his on with close to 3300 miles for him (lots of trips to his vacation property during this pandemic) and he had no issues so far (hes tuned also but forgot what he had done)

Before this, didn’t want to spend too much on a DP and I know there is a lot of cheap crap out there,
I was considering (in the catted category) fi-exhaust, Armytrix, AFE, and several other in the 4.5 category but all were nearing the 800+ mark (I understand that some have GESI cats, but other folks had the same cats and got a CEL eventually, so that didn’t matter to me).

Shipping and purchasing: very quick and efficient, product came in nicely packaged in a tidy box, paid via debit card using paypal. Steve over at logos engineering gave me updates.

Quality: triple element flex joint (oem style) was also something I was looking for, pipe measure 4.5 inches from the opening, to the middle of the barrel before it tapers down, like I mentioned ive had vrsf and these are a tad batter in overall quality overall, fit and finish is superb, everything is rock solid and the welds look like they were made by the same ethereal beings that made thors hammer!..lol. really was impressed and satisfied with the quality to price point ratio.
Backpurged welds seals the inside and that’s was I was looking for.

Sound: this is just about perfect for what I need and wanted!…really opens the exhaust system up with a smoother tone compared to cat-less (never again for me), something like this should be the first mod before someone considers a full exhaust.

CEL: I know this is the multi million dollar question…I had these put on for about 4 weeks and put a couple of hundred miles on them and no CEL. My neighbor did install one of those J-style 02 spacers as a preventive measure so I did the same after the 4 week mark…2300+ miles and no cel and sexy pops and burbles.

Pictures below of the construction. Note: In the last 2 pictures I also took a pic of the front of the catalyst and back of the catalyst (or at least the most I could through the sensor hole.)

If interested i purchased it from here:

https://www.logosengineeringmotorwor...ra-2020-z4-g29
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      01-16-2021, 06:17 PM   #2
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Good pics and thanks for the write up!
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      01-16-2021, 09:02 PM   #3
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Thank you did sharing. Do you have link for the J-style O2 sensor?
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      01-16-2021, 11:40 PM   #4
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https://www.amazon.com/Vibrant-11620.../dp/B002U70614

This is the one i used, but from i read..any 90 degree angle one will work.

Also I paid $650 for the catted pipe.

attached is the orientation of the J-style spacer.
(pardon my chicken scratch drawing)
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      01-16-2021, 11:56 PM   #5
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Looks great for a great price. I didn’t want to get one but the more I keep seeing posts about this I’m really considering getting one.
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      01-17-2021, 02:51 PM   #6
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Good job on a great review, and nice quality pics. Thanks!
Appreciate the shots of those welds, they do some good work
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      01-17-2021, 02:52 PM   #7
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Quote:
Originally Posted by Boosted6 View Post
https://www.amazon.com/Vibrant-11620.../dp/B002U70614

This is the one i used, but from i read..any 90 degree angle one will work.

Also I paid $650 for the catted pipe.

attached is the orientation of the J-style spacer.
(pardon my chicken scratch drawing)
Thank you for the information!
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      01-17-2021, 05:17 PM   #8
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Garage List
Dope write-up. Adding this to the upgrades list
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      01-17-2021, 06:19 PM   #9
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Looks amazing and fantastic price. Highly considering grabbing one. How long did it take to receive it?
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      01-18-2021, 10:26 AM   #10
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i think it was 2-3 days..wasn't long. received it relatively quick.
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      01-18-2021, 08:49 PM   #11
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it does said keep the CEL away, i assume it's similar products to the AA catted downpipe?
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      01-19-2021, 01:00 PM   #12
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Well with any high flow catted downpipe (even AA) you risk getting a CEL later down the line. there are so many variables that its hard to keep track of what affects what and what works (make, model, elevation, year, extra pops and burbles, etc). What i got from that statement on the site "is keeping them at bay" (i.e. they wont come on right away/ or at all). i got the Jstyle sensor spacer and so far so good. 2,357 miles so far and holding (i logged this on my cell phone to keep track, like what i do with all my mods...lol), and i drive my car HARD.
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      01-19-2021, 08:29 PM   #13
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Quote:
Originally Posted by Boosted6 View Post
Well with any high flow catted downpipe (even AA) you risk getting a CEL later down the line. there are so many variables that its hard to keep track of what affects what and what works (make, model, elevation, year, extra pops and burbles, etc). What i got from that statement on the site "is keeping them at bay" (i.e. they wont come on right away/ or at all). i got the Jstyle sensor spacer and so far so good. 2,357 miles so far and holding (i logged this on my cell phone to keep track, like what i do with all my mods...lol), and i drive my car HARD.
i had the AA catted downpipe on my car almost a year, 5000+ miles, even after track days, no CEL once, and AA guaranteed it
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      01-20-2021, 10:34 AM   #14
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Congrats OP

Quote:
Originally Posted by cywing1119 View Post
it does said keep the CEL away, i assume it's similar products to the AA catted downpipe?
AA uses GESI cats which are EPA approved and guarantee no CEL.
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      02-08-2021, 01:31 PM   #15
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Thanks everyone for the post appreciation. really opens up the stock exhaust, looking to pair with a full exhaust after i explore options :-)
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      02-10-2021, 02:36 PM   #16
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Did you notice any increase in performance? They usually add 15-20hp.
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      02-12-2021, 11:43 AM   #17
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Absolutely, I paired it up with a JB4 re-map for high flow cat. its basically all over the power band, here and there. Especially noticeable around 3k rpm as it pulls harder. spool is also sharper (along with throttle). I do plan to go full ECU tune in the future to fully exploit other mods.
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      02-16-2021, 10:20 PM   #18
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Is the g20 xdrive and g22 xdrive the same down pipe? B58


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      02-17-2021, 12:04 PM   #19
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Quote:
Originally Posted by Sonic RR View Post
Is the g20 xdrive and g22 xdrive the same down pipe? B58


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Quote:
Originally Posted by Sonic RR View Post
Is the g20 xdrive and g22 xdrive the same down pipe? B58


Sonic
Looks like same OE part number. Ordered.
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      02-17-2021, 12:11 PM   #20
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Any chance they will make one for 330i G20?
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      02-17-2021, 10:24 PM   #21
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looks like yes. Guacamole!...3.5 inches throughout.

https://www.logosengineeringmotorworks.com/g20-b48

If its anything like mine, it will be built like a tank.
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      02-18-2021, 08:02 AM   #22
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Quote:
Originally Posted by Boosted6 View Post
looks like yes. Guacamole!...3.5 inches throughout.

https://www.logosengineeringmotorworks.com/g20-b48

If its anything like mine, it will be built like a tank.
Wonder if it will work with the B46.
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