Welcome to the North American Subaru Impreza Owners Club Saturday November 22, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-26-2003, 08:23 PM   #1
skid00skid00
Scooby Newbie
 
Member#: 18531
Join Date: May 2002
Location: Central Wisconsin, USA
Vehicle:
2000 Outback LTD

Default MRT survives winter salt

There was a lot of speculation on how the MRT exhaust would
survive road salt.

Mine did just fine:

http://home.earthlink.net/~ladlueck/MRT.htm
* Registered users of the site do not see these ads.
skid00skid00 is offline   Reply With Quote
Old 05-15-2003, 06:15 PM   #2
pdlindor
Scooby Newbie
 
Member#: 7446
Join Date: Jun 2001
Location: Madison, WI
Vehicle:
2002 Impreza RS
2009 Forester Limited

Default

Wow...that's great news!

Did you coat the headers with another coat of high-temp paint or have them ceramic coated? Or did you just put it on the way it came?

Thanks,
~Paul
pdlindor is offline   Reply With Quote
Old 05-15-2003, 06:57 PM   #3
Julian
Scooby Specialist
 
Member#: 1182
Join Date: Mar 2000
Location: Ventura, CA
Vehicle:
MY00 RS
BRP

Default

Man, what's up with MRT's welds?? Looks like they have changed the system somewhat, there are some expanded sections after the 2-1 collector and at the cat. My system was constant-dimension pipe:

Julian is offline   Reply With Quote
Old 05-16-2003, 09:08 AM   #4
kickin_81
Scooby Newbie
 
Member#: 16679
Join Date: Mar 2002
Location: MN
Vehicle:
2004 Forester XT

Default

Yours looks very decent. When I got my MRT, the big box it came in was in bad shape. There were drag marks on the muffler, the runners of the header, and some on the midpipe. I'm just glad they didn't crack my cat while they were at it. Fedex Ground can go to hell! I've recently checked my system, and those same scratches and scrapes are now rusted. Seems like I'll be doing a 2.5" custom cat-back piping.
kickin_81 is offline   Reply With Quote
Old 05-16-2003, 03:06 PM   #5
xfrickx
Scooby Specialist
 
Member#: 7267
Join Date: Jun 2001
Chapter/Region: BAIC
Location: SF CA
Vehicle:
1994 Honda VFR RC-36
2002 Subaru 2.5RS

Default

Where did you guys get you MRT systems from. I have been Thinking about getting one. But wasn't sure where to source one from? Also how much $, isn't it like 700.
Thanks for the help.

david
xfrickx is offline   Reply With Quote
Old 05-16-2003, 03:25 PM   #6
bluimpreza00
Scooby Specialist
 
Member#: 19094
Join Date: May 2002
Chapter/Region: South East
Location: Knoxville,Tn
Vehicle:
2002 Impreza WRX
Wagon- Black

Default

I used to have a MRT header back and sold it.

I want it back, where can I get one for the best price at and whats the price?


Julian did yours come in 4 parts?
Is your header Stainless Steel or did you have it coated?

Matthew
bluimpreza00 is offline   Reply With Quote
Old 05-16-2003, 10:22 PM   #7
obyone
Scooby Specialist
 
Member#: 16523
Join Date: Mar 2002
Chapter/Region: MWSOC
Location: Does anyone even read
Vehicle:
this anymore???

Default

Quote:
Originally posted by Julian
Man, what's up with MRT's welds?? Looks like they have changed the system somewhat, there are some expanded sections after the 2-1 collector and at the cat. My system was constant-dimension pipe:


The coated header, flange added, and removed cat were all done after market. My question is..."how much did it cost you to do that, and do you have a cat efficiency code CEL?

My MRT header back system has survived and entire Chicago winter (Chicago, where a you have a half inch of salt but only an 1/8th inch of snow) with similar results.
obyone is offline   Reply With Quote
Old 05-17-2003, 02:23 AM   #8
kickin_81
Scooby Newbie
 
Member#: 16679
Join Date: Mar 2002
Location: MN
Vehicle:
2004 Forester XT

Default

I talked with Julian a while back about his MRT system. The header was Jet-Hot coated after he got the cat cut off. He still has the CEL. Somehow, I didn't get a CEL w/ my MRT system. I bought mine from Exeter Subaru last summer for $530. The price did skyrocket since then.
kickin_81 is offline   Reply With Quote
Old 05-17-2003, 07:45 PM   #9
xfrickx
Scooby Specialist
 
Member#: 7267
Join Date: Jun 2001
Chapter/Region: BAIC
Location: SF CA
Vehicle:
1994 Honda VFR RC-36
2002 Subaru 2.5RS

Default

Another question, What is the sound like. Low/grumbly, or loud/racey? Also does the system drone at all?
Thanks for the info.

david
xfrickx is offline   Reply With Quote
Old 05-19-2003, 10:36 AM   #10
DanzBorin
Subaru Bounty Hunter
Moderator
 
Member#: 7131
Join Date: Jun 2001
Chapter/Region: TXIC
Location: Houston - Back in the Alief
Vehicle:
2008 STi DGM (3rd
STI) prev 05 STi (white)

Default

Quote:
Originally posted by bluimpreza00
I used to have a MRT header back and sold it.

I want it back, where can I get one for the best price at and whats the price?


Julian did yours come in 4 parts?
Is your header Stainless Steel or did you have it coated?

Matthew
did you sell yours recently (within the last 5 or 6 months)? I might have it then...
DanzBorin is offline   Reply With Quote
Old 05-19-2003, 03:54 PM   #11
bluimpreza00
Scooby Specialist
 
Member#: 19094
Join Date: May 2002
Chapter/Region: South East
Location: Knoxville,Tn
Vehicle:
2002 Impreza WRX
Wagon- Black

Default

DanzBorin:

Yep I sold it about 5-6 months ago to Brian W. in Houston Texas.


Im wanting one again.


Matthew
bluimpreza00 is offline   Reply With Quote
Old 05-19-2003, 04:27 PM   #12
DanzBorin
Subaru Bounty Hunter
Moderator
 
Member#: 7131
Join Date: Jun 2001
Chapter/Region: TXIC
Location: Houston - Back in the Alief
Vehicle:
2008 STi DGM (3rd
STI) prev 05 STi (white)

Default

Quote:
Originally posted by bluimpreza00
DanzBorin:

Yep I sold it about 5-6 months ago to Brian W. in Houston Texas.


Im wanting one again.


Matthew


yup... It's on my car... It doesn't fit correctly on an Automatic transmission, so he had to let it go... I like it!
DanzBorin is offline   Reply With Quote
Old 05-19-2003, 05:07 PM   #13
xfrickx
Scooby Specialist
 
Member#: 7267
Join Date: Jun 2001
Chapter/Region: BAIC
Location: SF CA
Vehicle:
1994 Honda VFR RC-36
2002 Subaru 2.5RS

Default

Sound?
:yells across post: hello?
xfrickx is offline   Reply With Quote
Old 05-19-2003, 11:51 PM   #14
obyone
Scooby Specialist
 
Member#: 16523
Join Date: Mar 2002
Chapter/Region: MWSOC
Location: Does anyone even read
Vehicle:
this anymore???

Default

Quote:
Originally posted by kickin_81
I talked with Julian a while back about his MRT system. The header was Jet-Hot coated after he got the cat cut off. He still has the CEL. Somehow, I didn't get a CEL w/ my MRT system. I bought mine from Exeter Subaru last summer for $530. The price did skyrocket since then.
What I meant was how much did it cost to have a flange added to the cat, and have the header coated? A local dude quoted me at around $500 to have that done. that's more than what I paid for the header+cat new.
obyone is offline   Reply With Quote
Old 05-20-2003, 08:40 AM   #15
kickin_81
Scooby Newbie
 
Member#: 16679
Join Date: Mar 2002
Location: MN
Vehicle:
2004 Forester XT

Default

xfrickx, the sound the MRT makes is unique. It is raspy in a few models, but in others it's completely not. Someone (name's at the tip of my tongue) here got the MRT without the resonator, and they got raspy out of the ass (pun not intended). In my opinion, the normal MRT makes a "louder than stock" sound, yet isn't as growly as the Borla header. I changed the normal MRT muffler that came w/ it to a free flowing one. The car felt like it pulled better up top while making a non-raspy, sporty sound. At idle, it grumbles. You can hear it, but the system is still quiet if you got a quiet muffler.

obyone, you'd have to ask the main man himself to get what you want to know. I havn't seen him around lately. I did a little research back then and here's what I got from Jet-Hot:

Quote:
Fong,

I'm assuming that the converter is about 12-15" long. That said we'd charge $50-60 to coat it, plus the $165 for the header. Just note that because the converter is welded onto the header we are unable to coat the interior of the header. If you can separate the two we can coat the header internally. We can coat the rest of your system as well, I'd estimate the muffler assembly at $80-90, and the midpipe at $35.

Thanks
Todd
note: that $165 price is for the inside + outside of the header. The rest of the parts to be coated should not be coated inside the piping (especially the cat converter). Hope this clears things up!
kickin_81 is offline   Reply With Quote
Old 05-20-2003, 02:51 PM   #16
Julian
Scooby Specialist
 
Member#: 1182
Join Date: Mar 2000
Location: Ventura, CA
Vehicle:
MY00 RS
BRP

Default

I don't get around here much, anymore...just heard about Cobb's ECU reflash for the 2.5 stuff...huh.

Anyway, the MRT system comes with the cat welded to the end of the header. The slice and flange job was done in-house...nothing a bandsaw, some 3/8" plate, and a welder can't accomplish. This was done, of course, to get the header ceramic-coated. This was done in hopes of avoiding the CE light, not for longevity reasons (and as shown in this thread, rust is really a non-issue).

In any case, the header was coated locally, for $150. Turn around was one week. Make sure you talk to you guy before pulling the header and/or shipping it off. The header is BIG, and my guy couldn't fit the whole thing into his tumbler, which is what he uses to polish the coating up. Some parts of the pipe are shinier than others, no big deal.

As to sound, kickin described it as louder than stock. Good description...it's like the stock turned up to 13 or so ("but it goes to 11.") A bit "boxier" at idle, and, IMHO, very good at WOT. It is quiet as stock on the freeway, no droning or buzzing. It is what the RS should have sounded like from the factory, with the very noticable boost in performance thrown in for the bargain.

Man, you new kids on the block don't know how easy you got it. Just call up any number of MRT dealers in the US and order one. No 8 months of GB waiting, no disappearing GB organizer, no mass-freight from Aus...

I read that the single-tip guys don't get a straight-through muffler. I had though my double-tip was straight through when I looked at it upon initial installation, but havent' checked since. Anyone with the dual-tip know it to be obstructed? I mean, it's not like I ever got rid of my CE light...

coated, wrapped, O2 sensor relocated...

JS
Julian is offline   Reply With Quote
Old 05-20-2003, 03:02 PM   #17
DanzBorin
Subaru Bounty Hunter
Moderator
 
Member#: 7131
Join Date: Jun 2001
Chapter/Region: TXIC
Location: Houston - Back in the Alief
Vehicle:
2008 STi DGM (3rd
STI) prev 05 STi (white)

Default

The CEL is much more common in colder climates and the 00-01 model...
DanzBorin is offline   Reply With Quote
Old 05-20-2003, 03:29 PM   #18
kickin_81
Scooby Newbie
 
Member#: 16679
Join Date: Mar 2002
Location: MN
Vehicle:
2004 Forester XT

Default

Off at the top of my head, if the CEL doesn't go away after all that heat retainment, wouldn't you think something else is causing the CEL? Did you try using a better front O2 sensor? I had my front O2 sensor replaced from the dealer for having a bad one. A year later, I put on my MRT header and no CEL. Could be related w/ the sensor, y' know? Sorry Dansborin, I live in Minnesota. One of the few states where your spit turns into ice before it reaches the ground... It couldn't be that colder climates causes more CELs.

I had the dual tip system on my car. When I had that muffler cut off, I couldn't see any light through the muffler no matter how much I tried to. The MRT dual tip muffler is restrictive. Funny also, the exhaust shop I took my car to laughed at the quality of the muffler. The muffler arms already started to crack and rust off at the welding. I'm glad I got the muffler replaced.

Off topic, Cobb has an ECU upgrade for the ECU? I was looking at ECUTek's Delta ECU, but it wasn't yet tested on a non boosted Impreza. I could look into Cobbs!
kickin_81 is offline   Reply With Quote
Old 05-20-2003, 03:53 PM   #19
bluimpreza00
Scooby Specialist
 
Member#: 19094
Join Date: May 2002
Chapter/Region: South East
Location: Knoxville,Tn
Vehicle:
2002 Impreza WRX
Wagon- Black

Default

I live in Tennessee, and its 78 degrees here now.

I have heard that the O2 sensor produces so little power that with the MRT you have to extend the O2 wires by 3 inches and since it runs on so little power that is why the CEL is on. I dont have my MRT anymore but I still have the same O2 with the 3in longer and I still get a CEL with the stock setup.

Matthew
bluimpreza00 is offline   Reply With Quote
Old 05-20-2003, 07:39 PM   #20
Julian
Scooby Specialist
 
Member#: 1182
Join Date: Mar 2000
Location: Ventura, CA
Vehicle:
MY00 RS
BRP

Default

I've had the O2 sensor recall. I had the CE light before and after the recall.

The CE light is triggered by a combination of loss of heat and higher flow. The mid-year '00s and beyond got a bit stricter ECU setup for monitoring the the rear O2 sensor, so your car may not have that ECU flash version.

The CE light code common with the MRT (and most header systems) is P0420, which has nothing to do with the front O2 sensor. It's the signal from the rear O2 sensor that is suppose to inform us all that the cat does not come up to temp in the designated timeframe.

The front O2 sensor has no problem reaching the MRT location (at least on my system, don't see why they would have changed it). The rear O2 sensor location is a bit of a stretch, but can easily be negotiated after clipping one wire tie in the wiring bundle under the plenum box. No need to extend either wiring harness for stock MRT locations.
Julian is offline   Reply With Quote
Old 05-20-2003, 10:59 PM   #21
obyone
Scooby Specialist
 
Member#: 16523
Join Date: Mar 2002
Chapter/Region: MWSOC
Location: Does anyone even read
Vehicle:
this anymore???

Default

One thing I want to state is "GET THE RESONATED MID-PIPE Mutha@%#!@$!!!" Seriously, my MRT header back system, with a Stromung Dual tip muffler, sounds ricey. I bought the unresonated mid-pipe because I didn't ask for the resonated one. Sales guy never told me there was a difference and I was a major noob back then.
obyone is offline   Reply With Quote
Old 05-21-2003, 08:55 AM   #22
kickin_81
Scooby Newbie
 
Member#: 16679
Join Date: Mar 2002
Location: MN
Vehicle:
2004 Forester XT

Default

Quote:
Originally posted by obyone
One thing I want to state is "GET THE RESONATED MID-PIPE Mutha@%#!@$!!!" Seriously, my MRT header back system, with a Stromung Dual tip muffler, sounds ricey. I bought the unresonated mid-pipe because I didn't ask for the resonated one. Sales guy never told me there was a difference and I was a major noob back then.
Hah! You're the one I'm talking about! I never thought a resonator can make such a difference in sound, but you are evidence it does. I'm sure there could be a few MRT (resonated) midpipes floating around to buy. Once I get my car Supercharged (in the near future and before I die), the midpipe is going to be replaced w/ a custom 2.5" cat back.

My car was purchased off the lot in Feb. '00. It doesn't look like I fall into the first batch of cars... but then again, I didn't get a recall on the ECM reflash. What I have on my car that may be related to my (non-CEL) O2 sensors; ProECM.com chip, Magnecor spark plug wires, and maybe I got a different O2 sensor part replacement. ...or, as mentioned before, maybe my ECU is not very picky.
kickin_81 is offline   Reply With Quote
Old 05-23-2003, 01:08 AM   #23
m750
Scooby Guru
 
Member#: 2278
Join Date: Sep 2000
Chapter/Region: NESIC
Location: Pepperell MA
Vehicle:
8Sti | 07 allez
White | Comp

Default

I pretty much agree word for word with what Julian says...
We've been back and fourth a few times regaurding the CE, and lack of fixes. I've got an 01, so... little or no hope for me.
The Tips on mine have rusted tho.
AO
m750 is offline   Reply With Quote
Old 05-23-2003, 04:08 AM   #24
joefocker20
Scooby Specialist
 
Member#: 13745
Join Date: Dec 2001
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2004 STI
Silver

Default

Hmm... I have a Borla Header and no cats and I havent gotten a CEL..
joefocker20 is offline   Reply With Quote
Old 05-23-2003, 09:44 AM   #25
m750
Scooby Guru
 
Member#: 2278
Join Date: Sep 2000
Chapter/Region: NESIC
Location: Pepperell MA
Vehicle:
8Sti | 07 allez
White | Comp

Default

that either means, you are running extremely lean, or not flowing enough ehaust gas for the 02 to think anything has changed...
To me, my cell signinfies the exhaust is doing it's thing, flowing more than the rear 02 expects.
AO
m750 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: 2002 GTI 337 (20k miles) NO WINTERS/SALT! Collector Car! VR4ownzU Private Vehicle 'For Sale' Classifieds 0 09-28-2008 05:21 PM
Surviving winters blizzard SilverBoosted Mid Atlantic Impreza Club -- MAIC 2 01-23-2005 11:57 AM
How to survive winter, brought to you by The Onion Cole Off-Topic 4 12-30-2004 01:25 PM
Flat Black Rota Wheels in the Winter Salt?? mrtrex Brakes, Steering & Suspension 0 11-04-2002 02:13 PM
Will I survive the winter on Stock tires? Rusty Canada Region Forum 15 09-23-2001 10:03 AM


All times are GMT -4. The time now is 06:41 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.