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Old 07-25-2002, 06:20 PM   #1
sicminded
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Post California Legal Downpipe

I live in California and being in the most strict emissions/smog state is a hassel when getting aftermarket parts. But after running across this downpipe, this is a good option for those who are concerned about driving on the public freeways and especially emissions and smog testing.

Does anyone know anything about this downpipe?

Does this downpipe replace both the cat converters after the turbo or just one?

Performance gains?

Will this fit with my aftermarket cat back exhaust (HKS Carbon Ti Exhuast), 2002 Subaru Impreza WRX?

Where can i buy one?

Thanks for your help

Check it out (scroll down to 'exhaust') :

http://www.mrtrally.com.au/performance/usaparts.htm

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Old 07-25-2002, 06:28 PM   #2
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Doing further research I just came across this website :

http://www.isrperformance.com/wrxexhaust.html

Looks like this answers my questions for Where i can get it and if it will fit my cat back, don't think they just sell the downpipe, and it looks like it replaces both cats?
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Old 07-25-2002, 06:33 PM   #3
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we don't have to worry about that little emissions test problem for 4 years (I think). Hopefully by then there will be CARB legal exhausts available.

What I did on my DSM was to make an effort to pass the visual which was enough to really pass the test.

If we can find the MRT DP, then we can at least pass the visual inspection, I'll worry about the rest later (and keep my stock exhuast around for just that senerio)
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Old 07-25-2002, 06:50 PM   #4
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I just put on the MRT turboback dual tips exhaust on my car and it sure looks stock to me!

Cal

if you want one, get it from Mike @MPJ Performance.
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Old 07-25-2002, 07:28 PM   #5
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Sounds like they just mean it will pass the sniffer, which doesnt mean much. I checked http://www.arb.ca.gov/msprog/aftermk...es/devices.htm and didn't see it listed. They have to have an actual carb EO for it to be truly CA legal and pass the visual if you have a nosy technician.
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Old 07-25-2002, 07:40 PM   #6
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There are currently no downpipes, other than the one from Subaru, that are manufactured to meet Subaru specs. Ergo, any California-legal downpipe, other than the one from Subaru, would have an EO applicable to a 2002 Subaru Impreza WRX. No such beast exists.

BTW, if you wish to confirm this, simply drive around with any loud BOV. It will attract the attention of the local "inspector."
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Old 07-25-2002, 08:03 PM   #7
William LaPalme
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that's the beauty of BOV, easy to put on easy to take off, easy to keep the origional for inspection time

ChrisW- I don't understand what you mean but I'd sure like to understand, as I am moving to Santa Barbara on Monday.
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Old 07-25-2002, 08:10 PM   #8
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Quote:
Originally posted by William LaPalme
that's the beauty of BOV, easy to put on easy to take off, easy to keep the origional for inspection time.
True. But onece you're "refereed," then an "expert" (i.e. the "referee") is supposed to inspect your car. And if all you had installed was a BOV, then all is well. Otherwise, ....
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Old 07-25-2002, 08:20 PM   #9
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Quote:
Originally posted by RimRockaz
I just put on the MRT turboback dual tips exhaust on my car and it sure looks stock to me!

Cal

if you want one, get it from Mike @MPJ Performance.
From what I understand, we can put a turbo back on and still pass emissions, but visual inspec. is a different story?

I want to put some modifications like Vishnu, or TurboXS stage (x) kit on my car and turbo back etc. etc. but living in Cali sucks balls for emissions.
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Old 07-25-2002, 11:41 PM   #10
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Quote:
Originally posted by Mr. Fancypants


From what I understand, we can put a turbo back on and still pass emissions, but visual inspec. is a different story?

I want to put some modifications like Vishnu, or TurboXS stage (x) kit on my car and turbo back etc. etc. but living in Cali sucks balls for emissions.
yeah thats why you keep your stock exhaust system just in case!

But when its time for smog inspection, I really dont' think the inspector/smog tech will notice the difference between MRT dual tips and stock dual tips. they are about the same size!

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Old 07-26-2002, 10:16 AM   #11
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Doesn't MRT have a cat in the downpipe?

If they look under the car they would just see a pipe with resonator and no other cats. They may question that and fail you (on the visual). Plus I am guessing that it will not take long for smog stations to figure out our WRX's(what to look for and cats etc..). After all lot's of them are car buffs/techs as well. I am also keeping my stocker after I upgrade to Vishnu stage one.

Cheers

Nick
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Old 07-26-2002, 12:53 PM   #12
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yes, there is a cat on the my MRT downpipe, and there is a resonator located at the begining of center pipe as well. compare MRT turbo back w/ OE subaru exhaust, it is very identical except the huge 3" piping.

Cal
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Old 07-26-2002, 01:05 PM   #13
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Technically, I doubt that any aftermarket downpipe would be considered legal or receive an EO number. Federal emission law says that you have to have a valid reason for replacing a Cat.

Can you get away with it? Maybe... Depends on how effective the high-flow cats are and how thorough the smog check station is. If you go to a referee station, I think you're chances are significantly reduced. Having said that, I'm putting a PDE downpipe (catless) on this weekend with the plan of putting the stocker back in for emissions tests (I'd have to since I'm going to have a catless up-pipe put in this weekend as well).
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Old 07-26-2002, 03:10 PM   #14
sicminded
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Bigmike, do you have a catback? I'm also thinking about doing what you are going to do which is go catless and just put back the stock exhaust system when it comes to check up time. The only thing I'm worried about is how loud your car is going to be running? With my catback (HKS Carbon Ti) I think it would be really loud for me to run catless. Would it be loud enough for cops to pull you over, or wouldn't they be able to smell your car from the rear (say if they happen to be at your rear), or flames!?

sicminded
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Old 07-26-2002, 05:36 PM   #15
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Turbo XS stage one offers ~35 hp increase keeping stock downpipe. It offers a catback muffler among other things. Is this legal under CARB?
Thanks,
P.S. I used the search engine and couldn't find an answer, if one is already posted forgive me.
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Old 07-26-2002, 05:46 PM   #16
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The TurboXS Stage 1 is illegal on street cars in all 50 states.
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Old 07-26-2002, 06:33 PM   #17
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Stage 1 is technically illegal but no tester will be able to know this. You still have your three cats so you'll pass both the visual and sniffer easily.
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Old 07-26-2002, 07:42 PM   #18
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Quote:
Originally posted by William LaPalme
that's the beauty of BOV, easy to put on easy to take off, easy to keep the origional for inspection time

ChrisW- I don't understand what you mean but I'd sure like to understand, as I am moving to Santa Barbara on Monday.
What he means is... Welcome to California! Passing smog can be a bitch but according to some new law (only heard via word of mouth) all new cars dont have to be smogged for 5 years. But if you plan on registering your car here when you get here it will have to be smogged. You best chances of passing smog will be to take it to one of those $29 smog places that pump out like 100 cars a day, they are much less likely to give it a thorough inspection. They will only look for really obvious stuff and to see the DP they will have to put the car on a lift and ive seen a few places here that dont even have lifts and I doupt they are gonna get on the knees and crawl under the car to look.
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Old 07-26-2002, 07:46 PM   #19
William LaPalme
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that's the thing about legal, it's soo fuzzy.

I feel that the best thing to do(this is what I'll be doing) is purchase the MRT exhaust, buy a BORLA 3" inlet/outlet CAT, flange either end of it and cut a portion out of the exhaust and put it in. After initial fitting this is a ten minute swap, and I will put my trusty CAT on EVERY DAY!!!(that I go to emissions testing)
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Old 07-26-2002, 11:16 PM   #20
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Quote:
Originally posted by William LaPalme
that's the thing about legal, it's soo fuzzy.
The EPA doesn't seem to see anything "fuzzy" about it:
http://www.epa.gov/otaq/cert/factshts/catcvrts.pdf
http://www.epa.gov/Compliance/resour...-guide-rpt.pdf

I suspect that CARB takes a similarly dim view of emissions systems tampering.
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Old 07-27-2002, 03:58 PM   #21
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For about 50 dollars you can pass emissions in california quite easily.
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Old 07-27-2002, 08:53 PM   #22
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When we had emissions in Florida. All you had to do was put twenty bucks over the VIN #, and when the inspector went to read your VIN #, you would just simply look the other way. I passed everytime.
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Old 08-12-2002, 01:58 PM   #23
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I'm currently in hawaii, running Carbon Ti exhuast with hks downpipe and godspeed uppipe.. i was wondering what would happen if i get pull over by the cops and he sees that i don't have a cat.. i heard it will be a big fine? man i guess that's the only thing that sucked in cali.. in hawaii.. you can run straight pipe all day long!!~~
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Old 08-12-2002, 04:30 PM   #24
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Well, If the cop knows that there should be a cat in the downpipe and uppipe, then yeah you may get fined. I don't know if it will be huge or just a fix-it ticket.

-David
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Old 08-13-2002, 12:38 PM   #25
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Quote:
Originally posted by William LaPalme
that's the thing about legal, it's soo fuzzy.

I feel that the best thing to do(this is what I'll be doing) is purchase the MRT exhaust, buy a BORLA 3" inlet/outlet CAT, flange either end of it and cut a portion out of the exhaust and put it in. After initial fitting this is a ten minute swap, and I will put my trusty CAT on EVERY DAY!!!(that I go to emissions testing)
Exactly how much work are we talking about to put the OEM stuff (including intake) back on? Is this something a mortal can do, or must you be an ASE demi-god?

I had a Stromung turbo back and an AEM CAI put on my car. Just in case, I kept all my original parts (got a big box at home, hopefully, it's all there -- I wouldn't know if something was missing).


I hope that in 4 years, we'll start seeing "smog check parties" amonst the local i-clubbers to help each other out with all this swapping around.
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