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      03-22-2015, 06:18 PM   #1
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z4m Section 1 ""S" pipes

Does anyone have any experience with the euro style cats produced by Status Gruppe?
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      03-22-2015, 07:22 PM   #2
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Also interested. Have Euro headers and planned on modifying section 1. This seems like it might be a lot easier and ready to go. On their site it says O2 bungs welded in but I don't see them. Always concerned parts won't fit correctly (no experience with this vendor just a general concern) and what is supposed to be easy turns into a hassle.
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      03-24-2015, 07:49 AM   #3
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Here's the link to them - http://www.statusgruppe.com/products...ytic-converter
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      03-24-2015, 12:36 PM   #4
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If I remember right the complaints on these revolved around ground clearance. They hang a little bit lower due to their shape. I think there's a couple threads where these were tested out on a few different Moupes.
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      03-24-2015, 12:38 PM   #5
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Say you do a euro header swap, picking up a 400 cell for the s-pipe is pretty dense don't you think? I'm not sure how much OEM is (I think 200 on the headers and 200 on the s-pipe) but it seems to me this is pretty much equivalent to buying euro s-pipes.
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      03-24-2015, 01:20 PM   #6
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I was interest too, they have a 400 CA compliant that sound like it will be good for smock check and pass here in California.
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      03-24-2015, 01:50 PM   #7
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Quote:
Originally Posted by UntzUntzUntz View Post
Say you do a euro header swap, picking up a 400 cell for the s-pipe is pretty dense don't you think? I'm not sure how much OEM is (I think 200 on the headers and 200 on the s-pipe) but it seems to me this is pretty much equivalent to buying euro s-pipes.
I believe OEM is 400 cell for both.

Besides the density, there's also the cat length. Euro cats are huge. North American cats have the same material, but less of it, so they should flow better.
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      03-24-2015, 02:42 PM   #8
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I just got off the phone with StatusGruppe regarding the 400 cell cats. They said because they're high flow, it pretty much guarantees you won't pass the sniffer test but you should pass the plugin computer test. Which that is my main concern because the sniffer and visual you can just "find a guy" for.

Here's the interesting part, they actually don't recommend this for our cars. Two reasons, they don't provide much performance since the cat itself is massive, and apparently, they're made for V8's? Didn't get exactly what he meant, my boss was walking around while I was on the phone I wasn't paying full attention lol.
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      03-24-2015, 02:46 PM   #9
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Oh, and that's if it's cooped with euro headers, of course.
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      03-24-2015, 02:52 PM   #10
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FWIW, CPI shipped me a prototype set of cats for the DKF system to make sure they pass emissions. CPI can also make sniffer-compatible attachments. So if someone had a rental set of California cats, everyone could run the high flow cats for everything but the sniffer.
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      03-24-2015, 03:17 PM   #11
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Quote:
Originally Posted by pokeybritches View Post
FWIW, CPI shipped me a prototype set of cats for the DKF system to make sure they pass emissions. CPI can also make sniffer-compatible attachments. So if someone had a rental set of California cats, everyone could run the high flow cats for everything but the sniffer.
Pokey,

Maybe I'm having a long day at work, but what do you mean by "rental cats"?
And any time frame on when this will be out?
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      03-24-2015, 03:50 PM   #12
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Quote:
Originally Posted by pokeybritches View Post
I believe OEM is 400 cell for both.

Besides the density, there's also the cat length. Euro cats are huge. North American cats have the same material, but less of it, so they should flow better.


both are huge.... the NA cats are shorter but lets not beat about the bush they are still large lol!! my cars breathing with the 100 cell DKF cats is just different you can HEAR how free flow it is! its deafening!
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      03-24-2015, 04:07 PM   #13
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CPI has built me a set of 400 cell cats to pass OBD2 readiness. However, for smog testing, CPI can put in 400 cell California cats that are more restrictive (and expensive) but should pass sniffer.

By "rental cats" I mean that someone could purchase a set of California cats that fit the DKF system, and charge a set amount (like $50 plus a refundable damage deposit) for people to borrow the cats to pass sniffer. Once sniffer is passed, the cats are returned to the guy that actually owns them, and the deposit is refunded.

Customers could always purchase their own set of California cats, but that's a lot of money for a test that occurs every two years.

As far as timeline goes, CPI has made a jig to build catted attachments. If someone wants to test the DKF/CPI California cats, shoot me a PM. I can get you a prototype set (which won't be as pretty as the final product) for a significant discount. If you don't already have a DKF system, I can get those too. DKF wants to move their last few remaining sets from the last group buy, so I'm sure they'd be more than happy to do a resonators only system (plus the CPI attachment).

By the way, DKF is onboard with all of this, and they want to have a solution to the CEL before the next group buy.
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      03-24-2015, 04:16 PM   #14
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Quote:
Originally Posted by Beedub View Post
both are huge.... the NA cats are shorter but lets not beat about the bush they are still large lol!! my cars breathing with the 100 cell DKF cats is just different you can HEAR how free flow it is! its deafening!
Lol yes, very true. There's also a huge volume difference in part and full throttle with high flow cats. I still have the OEM setup on my ESS car (which will change next month), but with my G-Power car, I have Supersprint V1 stepped headers and HJS catted S-pipe. The difference in volume on/off throttle is insane.
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      03-24-2015, 05:21 PM   #15
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Quote:
Originally Posted by UntzUntzUntz View Post
I just got off the phone with StatusGruppe regarding the 400 cell cats. They said because they're high flow, it pretty much guarantees you won't pass the sniffer test but you should pass the plugin computer test. Which that is my main concern because the sniffer and visual you can just "find a guy" for.

Here's the interesting part, they actually don't recommend this for our cars. Two reasons, they don't provide much performance since the cat itself is massive, and apparently, they're made for V8's? Didn't get exactly what he meant, my boss was walking around while I was on the phone I wasn't paying full attention lol.
Some of this seems odd. They say on their site -
Quote:
We only use Catalytic Converters made by Magnaflow. The Magnaflow Converters are 49 state legal, OBDI and OBDII EPA Compliant
Quote:
Our "CA OBD2" Version Section 1s feature CA OBD 2 Compliant Catalytic Converters.
So if I buy their standard system, with the correct O2 and EGT bungs welded in I can put on Euro headers and their standard system and be 49 state legal? Odd that the CA version won't pass the sniffer. Also that it is built specifically for the Z4M but they don't recommend it. Looks like I am back to just modifying the stock section 1.
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Last edited by David70; 03-24-2015 at 05:27 PM..
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      03-24-2015, 05:22 PM   #16
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Quote:
Originally Posted by pokeybritches View Post
CPI has built me a set of 400 cell cats to pass OBD2 readiness. However, for smog testing, CPI can put in 400 cell California cats that are more restrictive (and expensive) but should pass sniffer.

By "rental cats" I mean that someone could purchase a set of California cats that fit the DKF system, and charge a set amount (like $50 plus a refundable damage deposit) for people to borrow the cats to pass sniffer. Once sniffer is passed, the cats are returned to the guy that actually owns them, and the deposit is refunded.

Customers could always purchase their own set of California cats, but that's a lot of money for a test that occurs every two years.

As far as timeline goes, CPI has made a jig to build catted attachments. If someone wants to test the DKF/CPI California cats, shoot me a PM. I can get you a prototype set (which won't be as pretty as the final product) for a significant discount. If you don't already have a DKF system, I can get those too. DKF wants to move their last few remaining sets from the last group buy, so I'm sure they'd be more than happy to do a resonators only system (plus the CPI attachment).

By the way, DKF is onboard with all of this, and they want to have a solution to the CEL before the next group buy.
I don't think sniffer is part of the test anymore... As long as the computer is good, test is good. I'll be interested in a s-pipe with installed bungs that'll give computer readiness. Kinda like StatusGruppe's s-pipe. If it's possible, could he bore out the pipe diameter after the cat? That way smog won't be affected but the flow would greatly increase.

We can even chip in for a CA "rental" setup with everyone that's around the area and just pass it around when someone needs it. Like a slut.
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      03-24-2015, 06:00 PM   #17
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Quote:
Originally Posted by UntzUntzUntz View Post
I don't think sniffer is part of the test anymore... As long as the computer is good, test is good. I'll be interested in a s-pipe with installed bungs that'll give computer readiness. Kinda like StatusGruppe's s-pipe. If it's possible, could he bore out the pipe diameter after the cat? That way smog won't be affected but the flow would greatly increase.

We can even chip in for a CA "rental" setup with everyone that's around the area and just pass it around when someone needs it. Like a slut.
I just (last month) bought my M coupe from out of state, so had to smog for registration. Sniffer is still performed in addition to OBD2 readiness check. Euro Header, DKF Section 1 with 300cell cats, stock Xpipe, SS powerloops. Not only do I have a check engine light (Service Engine Soon) for code P0420 (translation: cat ain't working), but I also failed the sniffer miserably. I also have an AA tune that should resolve the check engine light, but it's apparently not up to the task. Previous owner did not have a check engine light, so my next order of business is to get in touch with AA and see if they are willing to modify the tune.

Next time I have to smog, I'm plugging the o2 bungs on my DKF Section 1, swapping in the US header, and taking it for smog that way. I'm interested in a 400-cell, smog-passing aftermarket cat that can easily swap into the place of the DKF 300 cell cats, but I'll believe it when I see it. I've never seen an aftermarket cat easily pass smog in good 'ol CA.
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      03-24-2015, 06:26 PM   #18
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Quote:
Originally Posted by Reborn_ View Post
I just (last month) bought my M coupe from out of state, so had to smog for registration. Sniffer is still performed in addition to OBD2 readiness check. Euro Header, DKF Section 1 with 300cell cats, stock Xpipe, SS powerloops. Not only do I have a check engine light (Service Engine Soon) for code P0420 (translation: cat ain't working), but I also failed the sniffer miserably. I also have an AA tune that should resolve the check engine light, but it's apparently not up to the task. Previous owner did not have a check engine light, so my next order of business is to get in touch with AA and see if they are willing to modify the tune.

Next time I have to smog, I'm plugging the o2 bungs on my DKF Section 1, swapping in the US header, and taking it for smog that way. I'm interested in a 400-cell, smog-passing aftermarket cat that can easily swap into the place of the DKF 300 cell cats, but I'll believe it when I see it. I've never seen an aftermarket cat easily pass smog in good 'ol CA.
A tune won't solve your issue. All it does it disable the sensors into "not ready," which is an automatic fail. Guess we're gonna have to wait and see who's gonna take one for the team. That's Cali for you. Only state that if you dare just to even fart next to your car while getting the sniffer test, you'll fail. Gotta love it.
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      03-24-2015, 06:32 PM   #19
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Quote:
Originally Posted by UntzUntzUntz View Post
A tune won't solve your issue. All it does it disable the sensors into "not ready," which is an automatic fail. Guess we're gonna have to wait and see who's gonna take one for the team. That's Cali for you. Only state that if you dare just to even fart next to your car while getting the sniffer test, you'll fail. Gotta love it.
Hm. I thought with tune software, you could attenuate the signal received from the secondary o2 sensor so that it won't trigger the check engine light, but not so much that it is "not present."
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      03-24-2015, 06:58 PM   #20
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Hm. I thought with tune software, you could attenuate the signal received from the secondary o2 sensor so that it won't trigger the check engine light, but not so much that it is "not present."
Nope. Such tune does not exist. Get's rid of CEL, but still doesn't display the sensors as "ready." What I would do in your case is sell the cat and get 400 cell ones to pass the OBD test and pay the guy to pass for sniffer. Otherwise, I wouldn't want to take out the exhaust, get new gaskets/nuts, and swap it back once every two years. However I've heard places not even doing sniffer at all for car years 2000+ so keep an eye out.
Or just swap ECU's with a stock ///M so the computer thinks it's YOU that passed the smog test. Don't listen to me I'm just bored at work.

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      03-24-2015, 07:12 PM   #21
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Tunes do exist that show secondary O2's as ready. It depends on the state, but there is a $10k fine around here for getting caught with such a tune.

The proto 400 cell cats have already shipped out to the test car, which has stock tune, AA headers, DKF S-pipe. CPI has offered to make the California cats, so if someone is interested and has smog coming up soon, I can get a set built. The cats are a lot more expensive though ($200+ more per set).
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      03-24-2015, 07:28 PM   #22
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Quote:
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Tunes do exist that show secondary O2's as ready. It depends on the state, but there is a $10k fine around here for getting caught with such a tune.

The proto 400 cell cats have already shipped out to the test car, which has stock tune, AA headers, DKF S-pipe. CPI has offered to make the California cats, so if someone is interested and has smog coming up soon, I can get a set built. The cats are a lot more expensive though ($200+ more per set).
I had no idea about the tune. This is why I hate giving straight answers to people because someone out there always knows more lol Which tune????

I should be getting mail for my smog testing in a couple months. I could be the test car for you so if it passes, I'll take it off your hands. PLEASE try to have the pipe at the larger diameter right after the cats. More flow while having zero effect on emissions.
Btw I can coop euro headers with it. It's collecting dust in my garage just waiting for a CPI s-pipe to mate with.
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