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Old 12-09-2002, 08:49 AM   #1
Ghomer1
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Default Borlas supposed to sound Raspy?

I just installed my borla gen 4 and I was just wondering if they are supposed to sound anything like a lawnmower. You know kinda raspy.....the way it sounds if air is seeping by there?

I reused the stock gaskets on this, and I'm wondering if I have a leak somewhere. Sounds good otherwise, I'm just not happy with the raspy sound. What's the best way to check for a leak? Baby powder.

Garret
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Old 12-09-2002, 09:12 AM   #2
RaceCarRiot
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i reused my 9 year old gaskets on my car when i installed them this weekend, and i don't have any leaks...if i rev it at WOT at a standstill, i can hear a bit more metallic noise coming from the front of the car; the exhaust pulses are a lot 'sharper' sounding. check it again for leaks, but keep in mind that the factory piece is made of a thicker, heavier metal (steel or cast iron or whatever), and has additional shielding around which all helps to help soak up noise. also, have someone else mechanically inclined listen to it before you go to all the trouble to spot a leak...when you're used to all the little subtleties of your car, you hear little things that make you paranoid and turn out to be nothing.
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Old 12-09-2002, 10:13 AM   #3
Ghomer1
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You're probably right. It's not a huge deal, but it doesn't sound as "mean" as people say it does. I'm not sure if I like the raspiness of it...sounds kinda R ICE.

G
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Old 12-09-2002, 11:03 AM   #4
RaceCarRiot
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yeah, when i first put them on, i was kind of offset by the metallic 'hissy-ness' from the front of the car when i leaned out the window to hear how it sounded when i revved it up and make sure nothing was leaking, but it only seems to be really noticeable when there's no load on the engine (i.e. revving it up in neutral). in normal driving, i don't hear it. we put a couple sets of gt-spec headers on a pair of WRX's that morning, and they noticed the same thing, even with all the brand new gaskets included in the kit; you hear a lot more metallic noise from the engine bay.

but yeah, revving it up doesn't sound exactly like you think it would...it sounds mean, but like a louder version your exhaust before the headers went on. it sounds much better under load.
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Old 12-09-2002, 11:36 AM   #5
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the different sound is just from the different metal of the headers, instead of the heavy cast from the factory manifold. the way i look for leaks is i jack the car up when its the motor is cold and get someone to start it and feel around where the flanges are, you'll feel the air pulsating out of the gaskets if theres a leak. i really doubt you have a leak, its just a different sound.
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Old 12-09-2002, 12:55 PM   #6
Ghomer1
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Not sure if I really like it or not. It really does resemble the sound from a riding lawn mower. Not the mean image I want to put out there.

Garret
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Old 12-09-2002, 03:45 PM   #7
AustinSTi
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when i put my borla header on..i went ahead and got new head gaskets..they were like 7 bucks each..and went to pepboys and got some copper sealant to put inbetween the gaskets and header....i like the way mine sounds, but mine doesnt sound like a lawn mower though.
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Old 12-09-2002, 04:30 PM   #8
Bob O
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Ghomer, I have gen3's and am in Towson everyday. If you want to meet up to hear mine to compare, let me know. I don't hear anything that I would call "raspy". Mine are more "throby" or "throaty"

bob
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Old 12-09-2002, 05:41 PM   #9
six6sicks
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I put my Bolra header and cat back on last weekend and notice the same sound. I think it was just an exhaust leak cuz when I put my new hi-flow cat. on yesterday I noticed the gasket was leaking pretty bad and since I was going to have everything apart I replaced every gasket. The sound went away and I don't think it sounds like a lwan mower nor does it sound like RICE. Sounds like it has more balls to me. I like it way more than stock or ricey.
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Old 12-09-2002, 06:57 PM   #10
Ghomer1
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I'll have to buy some new gaskets then.......any one else...I am semi-seriously considering taking them off and selling.....

Garret

Bob-O...where in Towson are you? I'd love to meet up sometime..

Garret
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Old 12-09-2002, 08:26 PM   #11
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You finnaly picked up the headers from Brian?
Bob lives in Felton, near octagon spares( )

Use copper gasket material on the exhaust manifold side, thats what solved my problem...

~Brian
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Old 12-09-2002, 08:29 PM   #12
Ghomer1
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Yeah Brian, I drove my ass all the way down to Norfolk....3 hours minimum each way......

Where can I get these copper gaskets?

Garret
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Old 12-10-2002, 01:18 AM   #13
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I've had the Gen3's on for over 30,000 miles and the only time they sounded raspy was when I hit a big piece of wood in the middle of the highway and it put a hole in them. Other than that with the Stromung it has a very deep growl to it. 100% not RICE that's for sure.
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Old 12-10-2002, 03:04 AM   #14
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Copper gasket material, comes in a tube, buy it at any auto store, poissbly a super walmart.... use that on both sides of the gaskets on the manifold side, not the cat side.
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Old 12-10-2002, 08:48 AM   #15
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Garret, I work at Black and Decker, 701 East Joppa Road.

Let me know when and where.

Bob
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Old 12-10-2002, 10:25 AM   #16
Teamugi
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I have SYMS headers and they are pretty raspy too when I open the car up. i guess it is part of the design of the subaru. What type of system are you running Ghomer after the cat? I am using a Greddy EVo and it is not the best sound, but it is livable. Might try an american muffler if all else fails.

Last edited by Teamugi; 12-10-2002 at 12:01 PM.
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Old 12-10-2002, 11:01 AM   #17
Bob O
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A'pexi N1 Can and rallispec piping. Stock cat pipe. It's stupid loud.

Bob
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Old 12-14-2002, 11:47 AM   #18
Ghomer1
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I think I'm going to take them off and sell them. The sound is getting worse, and even with the thermo tec header wrap, i'm still getting the CEL.

Boo.
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Old 12-14-2002, 01:36 PM   #19
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get a MIL eliminator...

take the headers off.. visually look for cracks, when they are still pretty warm(not hot) run warm water thru them to check for cracks...
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Old 12-14-2002, 04:19 PM   #20
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Did you even think about your cat-section heat shields? They could be rattling. Just a thought.



Mick
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Old 12-16-2002, 03:44 PM   #21
Ghomer1
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It's definitely NOT a rattling. It's a leak of some sort. I just have to figure out if it is from a crack from Brians accident, or is it from bad gaskets.

Garret
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Old 12-17-2002, 01:44 AM   #22
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What muffler are you running? Yes, it does matter.
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