Welcome to the North American Subaru Impreza Owners Club Sunday October 25, 2020
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 01-24-2001, 08:47 PM   #1
Overtime
Scooby Specialist
 
Member#: 1346
Join Date: Apr 2000
Talking First impressions of Borla headers/Borla catback

First of all, it looks very nice from behind. Like the Brospeed, it looks "almost stock"-not a blatant upgrade, but definitely an upgrade. The tip is a little big for my taste, though it fits the opening very well.

Second of all, the install. Aieesh. I guess my Impreza was made by several extremely angry workers (or machines,) because those bolts attaching the stock header to the stock cats were absolutely horrible to take off. The first one required feet, the second one required a cheater bar. And I almost stripped the second one...I was pushing HARD for a while.

Finally, the performance. A quick 10PM drive reports that the car...

A) sounds really, really good. Like if an older V8 and a Subaru had a kid.
B) makes that sort of hush-hush noise when driving, but not when revving in neutral...which makes me wonder if I screwed something up on the install. Wouldn't surprise me.
C) eliminates the 4000-6250 power blight that we have. I'm not lying...the car actually speeds up when you're up top. And I didn't notice any power drop off the line.
D) needs new brakes. I need a paycheck.

I really like this set. It makes the Impreza sound like a stock sports car. I can't describe it exactly, but it's a good sound, a not-too-loud-but-you-know-what-it-is loud.

All in all, if you have the means, I highly reccomend it.

If anyone with the Borla headers has any sound reports...or if you have the same problem I do...let me know, please. It would be a big help if someone lets me know whether or not I have to go back under there. Thanks in advance!
* Registered users of the site do not see these ads.
Overtime is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-24-2001, 08:55 PM   #2
Eric
Scooby Newbie
 
Member#: 48
Join Date: Jun 1999
Chapter/Region: MAIC
Location: Charlotte Hall, Maryland, USA
Vehicle:
1999 Impretza 2.5
silver

Post

My car definitly sounds better when under load. Neutral is ok, but not like driving. Its probably just your ears. As long as its not pinging or rattling Id say your ok. Maybe check the torque on the engine side bolts.

Eric
Eric is offline   Reply With Quote
Old 01-24-2001, 08:56 PM   #3
preza
Scooby Specialist
 
Member#: 1454
Join Date: May 2000
Location: Wyoming
Vehicle:
2000 2.5 RS-T
Blue

Post

Could you post a picture of it on your car, i havent seen a pic of the Borla exhaust.

Brian
preza is offline   Reply With Quote
Old 01-24-2001, 09:05 PM   #4
Overtime
Scooby Specialist
 
Member#: 1346
Join Date: Apr 2000
Post

Eric-

Maybe it's just me, but I hear the sort of sound a friend's beater early 70s Bronco makes with its headers...and it doesn't make that sound in neutral. I'll check the bolts, I guess. Thanks for the suggestion.

Brian-

Pics will be in soon, I hope. Probably in a week or two. I'll have several posted.
Overtime is offline   Reply With Quote
Old 01-24-2001, 09:18 PM   #5
Andrew
Scooby Specialist
 
Member#: 1170
Join Date: Mar 2000
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
2005 STi
White

Post

Heres something to do to love your exhaust even more.... Let your friend drive the car while you stand outside and watch. I havent done it for my borla/blitz combo yet but when I had a straight pipe it sounded AWESOME from outside. Just don't let your friend have too much fun

edit: what do you mean hush hush? When I have it in neutral and when I have it in drive it sounds good. Could it be your catback?

[This message has been edited by Andrew (edited January 24, 2001).]
Andrew is offline   Reply With Quote
Old 01-24-2001, 09:28 PM   #6
Overtime
Scooby Specialist
 
Member#: 1346
Join Date: Apr 2000
Post

Andrew-

I'm going to have to pick a friend I trust with my car...easier said than done. It's so easy to be stupid with the Impreza.

The headers make their normal sound when I rev. When I drive, I hear a shhh-shhh-shhh sound too.

It doesn't make that sound in neutral. I don't think it's the catback. It may just be natural, and I'm overreacting, but I wanted to ask to be sure, considering what a pain the installation ended up being.
Overtime is offline   Reply With Quote
Old 01-24-2001, 09:31 PM   #7
Andrew
Scooby Specialist
 
Member#: 1170
Join Date: Mar 2000
Chapter/Region: BAIC
Location: San Jose, CA
Vehicle:
2005 STi
White

Post

The only shhh sound I hear is from my intake. Could that be it? I've always assumed that it was the intake since I never could hear the engine noise due to the loud exhaust.
Andrew is offline   Reply With Quote
Old 01-25-2001, 12:39 AM   #8
suberboy
Scooby Specialist
 
Member#: 1531
Join Date: May 2000
Chapter/Region: RMIC
Location: Salt Lake City, UT
Vehicle:
2008 GRB
Red

Post

i had both the borla header and muffler and it was quiet when it wasn't under a load, or if i rev'd it in nuetral. so i think that is normal.
if you get the chance drag one of your friends who you have dragged before and see if the perfomance of your car has changed. i would beat my friend in his impreza through 2nd gear and then in 3rd he would blow by me. i'm changing my set up soon so i can't wait to see if that changes.
suberboy is offline   Reply With Quote
Old 01-25-2001, 08:38 AM   #9
Scooby2
Scooby Newbie
 
Member#: 2644
Join Date: Oct 2000
Location: Vancouver, WA USA
Post

What your hearing is called header ring. It's from the seperate pipes and the fact that their tubing this thinner than the stock pipes and with no sheilding you hear the ringing. I get the same effect on my CBR1000 with a Vance & Hines pipe on it, and have had at leats 10 cars over my 25+ year of driving and that is the sound you will get with headers.
Scooby2 is offline   Reply With Quote
Old 01-25-2001, 04:16 PM   #10
Overtime
Scooby Specialist
 
Member#: 1346
Join Date: Apr 2000
Post

Scooby2 and Suberboy-

You all are dead-on. It's that header ring.

I tightened the bolts today to find that one of them came off. I guess I forgot to tighten it. For a bolt-on, this was frustrating.

At least the catback went on fine. It gives the car less of a rumble than the bigger piping in the 5Zigen. I really like it.

Performance-wise, I'm starting to realize it's not a whole lot different from the 5Zigen with wider piping. The big difference is in power high in the RPM range. It makes the car accelerate much smoother-there's no dead spot high in the RPMs where the car doesn't go anywhere. I like that.

Take it easy.
Overtime is offline   Reply With Quote
Old 01-25-2001, 05:28 PM   #11
Sunrise City Rider
Scooby Specialist
 
Member#: 1503
Join Date: May 2000
Chapter/Region: South East
Location: Sunrise, FL, USA
Vehicle:
2000 Impreza W"RS"X
Blue Ridge Pearl

Question

I will be running the borla's with the 5Zigen soon. I'll let you guys know what the deal is. Other than sound, you would say that your car makes power up top? What about 1000 to 4,000 RPM? Any power there? How big is your Mid-pipe?
Zee
Sunrise City Rider is offline   Reply With Quote
Old 01-25-2001, 06:37 PM   #12
Fred Zaplitny
Gone... But not forgotten
 
Member#: 92
Join Date: Jul 1999
Location: East Detroit, Michigan
Vehicle:
1999 2.5RS Coupe
Blueish Kind of

Post

Overtime,
Is your Borla cat-back part #14885? The one with the 2" piping? I'm just curious if they have a new one or not. I've had mine for about 10 months now. I love it, but the noise is starting to bug me on the freeway. I'm thinking of looking into getting a resonator installed to quiet it down a bit.

I actually was debating on putting the stock system back on for now......but somehow I got over that evil thought!

One more thing, if that is the system you have, what did you do for the flange springs? I cut the stock ones to fit, but I recently found springs made for a Ford that look like they will work. Another issue with this system is that the hangers are too skinny and the muffler slides to one side. I have a fix for that though.....3/4" shaft collers and Lock-Tite.

Fred

Fred Zaplitny is offline   Reply With Quote
Old 01-25-2001, 07:52 PM   #13
suberboy
Scooby Specialist
 
Member#: 1531
Join Date: May 2000
Chapter/Region: RMIC
Location: Salt Lake City, UT
Vehicle:
2008 GRB
Red

Wink

my muffler slid around enough for the tip to come into contact with the bumper and melt it a little at one point so i wrapped end of the muffler hanger with electrical tape:-) pretty ghetto but it worked.
Fred where did you find the 3/4" collars a friend is buying my exhaust system and he might like that better than the electrical tape.
suberboy is offline   Reply With Quote
Old 01-25-2001, 08:12 PM   #14
Overtime
Scooby Specialist
 
Member#: 1346
Join Date: Apr 2000
Post

Fred-

Yup, 14885. With the headers, it's golden. I'm really enjoying it. Haven't made any long trips yet, though...I hope the headers will make it a little better.

I'm having that problem with the hangers too. Looks like I need to invest in some electrical tape.

What do you mean by flange springs? I'm a little lost. If you mean the stock muffler hangers...well...I'm having some issues with them, but the ghetto-rigging with electrical tape should solve them. CUSCO makes a set...TRi can get you them for $40 or so for all 4.

I just can't bring myself to spend $40 for muffler hangers.

Anyway, I'm really impressed with the quality of the setup as a whole. Other than that header ring (which I'm hoping to soften by tightening the headers again and putting on that lost nut) I have no problems at all. Especially after racing the 3rd gen Vette today. I posted the kill story on Si vs. All because I can't bring myself to litter our board, but it was a...unique race.
Overtime is offline   Reply With Quote
Old 01-26-2001, 06:12 AM   #15
Fred Zaplitny
Gone... But not forgotten
 
Member#: 92
Join Date: Jul 1999
Location: East Detroit, Michigan
Vehicle:
1999 2.5RS Coupe
Blueish Kind of

Talking

Racing a Vette! You're nuts!

Get some 3/4" shaft collars from a hardware store and put them on the outer ends of the two back hangers. This will keep the muffler in place.

Or

Use small hose clamps. Still kind of cheap looking, but better than electrical tape.

Yeah, Overtime I thought aboput the Cusco hangers for about half a second....40 bucks is a bit much for hangers.
Fred Zaplitny 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
Gauging Interest: COBB CAI, Borla Headers, OBX Catback soloist80 Normally Aspirated Powertrain 4 05-19-2006 10:30 AM
00 RS mods FS cheap:HID'S,gen4 borla headers,Borla catback,+..LI,NY Rick G Tri-State Area Forum 10 06-27-2003 06:19 PM
borla headers and catback exhaust ScoobyRSRallier Normally Aspirated Powertrain 3 10-09-2001 08:27 PM
borla headers and catback exhaust ScoobyRSRallier New England Impreza Club Forum -- NESIC 0 10-09-2001 08:25 PM
Borla headers + Borla catback from SPO, anyone running this? Andrew General Forum Archive 0 01-10-2001 12:58 AM

All times are GMT -4. The time now is 01:13 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2020 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.