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Old 04-30-2001, 06:27 PM   #1
Robmat
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Member#: 2173
Join Date: Aug 2000
Location: Daytona Beach FL USA/ Tampa FL USA
Vehicle:
2000 2.5 RS
BRP

Question Does anyone actually have the MRT header back exhaust?

If ya do, what do you think of it and most importantly, is it aluminized or stainless steel? If aluminzed, how durable is it? A dealer is making an MRT order and can get this for me. It looked good in the gruop buy but had trouble, so I didn't know if anyone actually recieved one. Thanks

Robmat
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Old 04-30-2001, 07:20 PM   #2
The Ru
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Join Date: Mar 2001
Chapter/Region: Tri-State
Location: Allentown to Stroudsburg, Pa
Vehicle:
95 M3
Alpine White

Post

Yeah i got one. i think it was a prototype for over here or something. Kyle from CTC gave it to me used (2 weeks from a guy that decided for a JDM swap instead). i had to have a nut welded for the other o2 sensor. its aluminized, painted black. pretty high quality though. muffler sounds a bit week, wanna replace that with a stroumung or someting(anybody wanna trade). I didn't feel the gains(think it was supposed to be like 14-16 hp dynoed or someting, on the header back) that i thought it would make more of a difference or maybe it did and i didn't realize it. this summer i'm gonna put my car stock and g-tech it, and add one perf part at a time and get some #'s. any other questions feel free to ask.
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Old 05-01-2001, 04:46 AM   #3
Patrick Olsen
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Join Date: Jul 1999
Chapter/Region: AKIC
Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Post

There's a guy with the username Chuck who has one on his RS here in CT. I haven't seen him around the board much in the past few months. He had gotten his a year or so ago and seemed quite happy with it. I got a chance to ride in his car and I liked the sound of it - pretty tame yet noticeable (particularly on engine braking), which is what I want.

Chuck had the same problem as The Ru with the second O2 sensor. Supposedly the newer versions sent to the US have the second bung already installed.

Two of the guys from the group buy have received their exhausts - they both chose to have theirs individually shipped. The rest of us are awaiting a group shipment. You can look here http://www.i-club.com/ubb-files/Foru.../000197-8.html for info - the one guy has installed his, but popped the CE light after about 180miles. I intend to get my header coated by Air Born Coatings to hold the heat in and hopefully keep that second O2 sensor happy.

Pat Olsen
'97 Legacy 2.5GT sedan
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Old 05-01-2001, 07:08 AM   #4
The Ru
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Location: Allentown to Stroudsburg, Pa
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95 M3
Alpine White

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oh yeah, and on that note, i have a CE light too. If i reset the ecu, it goes away and comes back bout 50 miles later. everything is fine though, maybe running a bit rich. one day i'll get off my arse and get it looked at...


And teh engine braking noise is the only one i like of the system...

[This message has been edited by The Ru (edited May 01, 2001).]
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Old 05-01-2001, 11:51 AM   #5
awd
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Location: Vancouver, wa
Vehicle:
2008 bmw 335i
black

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I have had the exhaust for over a year, and not ce light ever. It is a nie exhaust..
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Old 05-02-2001, 01:23 PM   #6
Craig W
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Join Date: Dec 1999
Chapter/Region: BAIC
Location: Redwood City, CA, USA
Vehicle:
1999 2.5RS
WRX powered

Question

awd,
What year RS do you have? The Ru's is a 2001. I wonder if different year cars' engine management systems react differently to aftermarket exhausts.
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Old 05-02-2001, 03:34 PM   #7
awd
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I have a 99. Not sure on the different years....
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Old 05-03-2001, 10:28 AM   #8
Craig W
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Chapter/Region: BAIC
Location: Redwood City, CA, USA
Vehicle:
1999 2.5RS
WRX powered

Talking

Cool. I've got a '99 too and am tempted to get an MRT header back exhaust. It'd be great if I didn't have a CE problem w/ it.
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Old 05-03-2001, 04:31 PM   #9
Jose O Perez
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Join Date: Sep 1999
Location: Aņasco,P.R.
Vehicle:
1999 Impreza 2.5RS
Silverthorne

Post

I have this system for almost a week now (installed it last Saturday), and after 250 miles no CE light. Mine is a '99RS. This was my first performance mod and I'm very happy with it. At idle is almost as stock, great sound at WOT and excellent for cruising (no thrashing on the inside of the car). It was what I was looking for, performance w/o calling Cops attention.
My only concern is that mine is mild-steel, and the exhaust tube where the tip is welded already looks rusted.
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Old 05-03-2001, 05:56 PM   #10
Martin V
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Location: Madison WI USA
Vehicle:
1999 Impreza 2.5 RS
Silverthorn

Post


Jose, did your system bolt right up or did
you have to have it modified? Also just curious how you ran the wire to the second
O2 sensor.

Martin
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Old 05-04-2001, 06:00 AM   #11
Jose O Perez
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Location: Aņasco,P.R.
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1999 Impreza 2.5RS
Silverthorne

Post

My system bolt on right up, w.o. any modifications. Regarding the second oxygen sensor, I had to release a tie wrap that holds the sensor bung at the passenger side, near the throttle body, to give it some slack to reach the connector. But there is no need to extend the cables. Also, I need to re-used the gasket from the header and the one from mid-pipe\cat-back, because it came with two gasket of the same size and it only match the header\mid-pipe connection. Still very happy with it, no CE light, and much improved response, especially from 4500 rpm and up.
Jose O.
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Old 05-04-2001, 07:24 AM   #12
Julian
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Location: Ventura, CA
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MY00 RS
BRP

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It seemed that the Borla header guys were getting CE lights in relation to being in colder temperatures. In other words, the colder the surrounding air, the more heat escapes the piping before the cat/O2 sensors, and it throws a code early (rather than running on the freeway for 100 miles).

How many of those of us in the ill-fated GB plan to get their header ceramic-coated?

Julian
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Old 05-04-2001, 08:02 AM   #13
RRinDC
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1998 Impreza OBS
Glacier White/Slate

Question

Julian,

Quote:
How many of those of us in the ill-fated GB plan to get their header ceramic-coated?
I'd consider it. Got any leads on where to get it done, how much it would cost? Do you think coating would reduce the chance of throwing a CE light?


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Old 05-04-2001, 09:12 AM   #14
aphleung
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The "header back" exhaust that you are all talking about here. Does it mean that the car can run with no cat? would it be very illegal to run the car like that?

Do anyone know what are the effect(s) when the cat are removed? How would it affect the O2 sensor?

[This message has been edited by aphleung (edited May 04, 2001).]
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Old 05-04-2001, 09:15 AM   #15
Julian
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Member#: 1182
Join Date: Mar 2000
Location: Ventura, CA
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MY00 RS
BRP

Post

That seemed to be the consensus of the Borla folk. I don't know what happened to them, really, as the thread died. But they were relating it to the piping. If you look at the stock stuff, it's covered by heat shields up to the cat.

I PM'ed ISR (where most of the exhausts are coming in-country) to see if she knew of anyone local. There's Jet-Hot in AZ, of which I've heard nothing but good things about. Not too expensive, just the shipping it is the PITA.

I'd say it's got a pretty good chance of not getting a CE. Puerto Rico is pretty warm this time of year, no? Trey Cobb never really got a CE light in all his Borla installs, and he was in warm (at the time) Texas.

Couldn't hurt!
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Old 05-04-2001, 10:35 AM   #16
Patrick Olsen
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Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

Post

aphleung - No, the MRT does have a catalytic converter, it's just relocated from the stock position. So, technically it isn't legal (you're supposed to replace cats with a direct fit equivalent by the letter of the law I think), but it's better than going without a cat. I'm thinkin' the car would be very unhappy if you didn't have a cat at all.

Julian and RRinDC - There are a lot of options for metallic-ceramic coatings, with Jet Hot being the most famous. Just do an internet search for "ceramic coating" and you'll find all sorts of information (I just did that on iwon.com and it came up with all sorts of links). Try http://4coating.com/ to search for something in your area (I just found that site when I did my search - pretty cool stuff, lets you search for powder coating, ceramic coating, etc by state).

I personally intend to have my header coated by Air Born Coatings www.airborncoatings.com , who just happens to have one of their major facilities within about 1hr from me. Their prices are pretty similar, maybe a little cheaper, than Jet Hot's, and I can drive up and drop the cumbersome header off rather than paying good money to ship it to Jet Hot. I think that Air Born's warranty is actually a bit better than Jet Hot's, too, which is just icing on the cake.

I've spoken with someone from Air Born and someone from another company (can't remember the name) out in OR. Basically, they said the difference between them and Jet Hot is like McDonald's vs Burger King - somewhat different ways of doing the same thing.

Will it help keep the O2 sensors warm and happy? It should. Will it be enough to prevent a CE light? I'll find out, I guess.

Pat Olsen
'97 Legacy 2.5GT sedan
Patiently awaiting what must be the greatest exhaust system ever since it's taken 4 months to build it so far.


[This message has been edited by Patrick Olsen (edited May 04, 2001).]
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