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OMG, the Borla is obnoxiously loud.

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Old 10-09-2006, 10:25 PM
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Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
OMG, the Borla is obnoxiously loud.

We finished up welding the Borla up tonight and touched up some leaks on the y-pipe and then I took the car to the store. Man, it is loud and raspy with hooker shorty headers, longtube style y-pipe, no cats, and no block-off plate on the pass side tip.

I'll see if I can get some video/audio clips tomorrow as it's too late and don't want to wake the dead.
I am very pleased as this Borla with the dual square intercooled tips setup only costed me $20.

Vette aluminum heads are going on this week or weekend hopefully. should take off about 50lbs from the front end.
Old 10-09-2006, 10:38 PM
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Car: 92 RS(sold) 1989 IROC-Z
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I gotta hear this im still dabating between GMMG or borla, Right now Im leaning more towards GMMG though, but who knows
Old 10-10-2006, 12:29 AM
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I like to here it to. That was the setup I was going to run b4 I changed my mind.
Old 10-10-2006, 02:11 AM
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Car: '02 Z06
Engine: L33 5.7
Transmission: T56
Axle/Gears: Stock IRS
Not long ago I ran my shorties, and Y pipe, and where the cat was, I ran the Borla resonator. Loud and obnoxious, but I left that in place with my new mufflex catback and spintech muffler, and now it has a nice quite drone inside the cab and very good sounding outside the car.
Old 10-10-2006, 04:35 PM
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Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5

Ok, here is a video clip and an mp3 audio clip,
right click and Save As,
http://www.transamws6.com/video/borla.wmv

http://www.transamws6.com/video/borla.mp3
Old 10-10-2006, 08:33 PM
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Sounds good man.

I think one of the reason's it's sounds a bit on the raspy side though, is because your motor's a 305. I run the same exhaust on my LT1 and even without a cat, there's no raspiness at all. I know they're different motor's but even on the few L98's I've heard with the Borla, they never sounded raspy to me so the only logical exlplanation is the motor itself. Bigger cube motors sound different that's all. Have you considered running a high-flow cat? That would curb 99% of the raspiness in your exhaust note. - Not that your car's that raspy anyway. Just sayin', if it really bothers you, a high flow cat is the solution

Regardless, I still think you car sounds awesome. Borla's tips for the 4th gen Fbody's look so much better than the tips on their third gen version..

Those look mint on your car.

Congadulations. Hope you enjoy your new exhaust.


On a side not, I've gotta buy a 2nd Borla system. I have one on my 4th gen, and I want to get one for my IROC now. I think their the best sounding exhausts out there for our cars.

It's just too bad the price went up.

I'll have to pay out big-time to get another one...

Last edited by LT1FUN; 10-10-2006 at 09:06 PM.
Old 10-10-2006, 08:43 PM
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Car: 92 Z28
Engine: Boosted LSX
No raspy sound here outa my 85 TA 305 tpi.
http://www.cecoatings.com/images/Car...ummerFunTA.wmv

SLP headers/Y pipe. borla cat back (gutted cat)
Old 10-10-2006, 09:56 PM
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Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
I think I am going to go with a high flow cat and the hooker y-pipe since the custom y-pipe I have goes under the crossmember and really cuts down on my ground clearance.

chris, your car looks and sounds great.
Old 10-10-2006, 11:55 PM
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Car: 84' z28
Engine: Built 350 SB 4 Bolt, Bored .30 Over
Transmission: 700r4
Axle/Gears: 3.42
not sure if its to each their own, or your just not doing something right (not sure how it can be the last one)
but i currently have a borla catback on my 84... hedman longtube headers, hi-flow cat (everyone goes wrong with the gutted bullshit) and it sounds like pure sex
----------
After watching your video, its obvious that you have the fully open plate in, they make 3 different plates for a reason, swap that out and go to a smaller one so it actually sends more of it through the muffler

Last edited by Denial; 10-10-2006 at 11:59 PM. Reason: Automerged Doublepost
Old 10-11-2006, 03:31 AM
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Car: 87 IROC
Engine: 5.7 TPI
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Axle/Gears: 3.27
Sounds good @ idle and reved up. The decel sound could sound better. It may sound better under load though. I like it though.
Old 10-11-2006, 12:50 PM
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Originally Posted by Zepher
chris, your car looks and sounds great.
Right back at ya!! Ive always liked your projects and cars.
Old 10-11-2006, 01:15 PM
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It'll sound better going through the muffler. They always do (particularly with no cat & headers) Save the bypass plate for the drag strip.
Old 10-12-2006, 02:45 PM
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Car: 92 RS(sold) 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: ones that turn
I like it
Old 10-12-2006, 03:59 PM
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sounds pretty mean!

but isnt the borla with the blockoff plate removed, just a straight thru pipe? out the rear? hows the muffler itself sound?
Old 10-12-2006, 04:08 PM
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Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally Posted by Orr89RocZ
sounds pretty mean!

but isnt the borla with the blockoff plate removed, just a straight thru pipe? out the rear? hows the muffler itself sound?
It has a much deeper mellower tone, and is a lot quieter. We stuffed rags into the tailpipe to divert the sound the other night since the bolts at the flange are really rusty, probably going to snap them when removed, so I have to get some new ones before I put the plates in.
Old 10-12-2006, 04:18 PM
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awesome...seems like a nice setup!!
Old 10-14-2006, 01:10 AM
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Car: 92 trans am/ 93 dodge spirit V6
Engine: L98 V8 - 350
Transmission: TH-700-R4
Axle/Gears: 3.23
ok i got a 1992 gta... and i got the a flowmaster... and mine si really raspy like that.... i dont got any cats and i still got all AIR and stock mainfold... i disagree that the L98 is less raspy.. mine is raspy ash ****... but nice car zepher... really like that sound.. i want to get headers on my car.... its a poject... and for the dude who did the burnout.. really cool... i only did that once in my car.... and i was so funs
Old 10-14-2006, 10:52 AM
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my car was raspy with the flowmaster with the stock cat but no headers. once i got headers tho, the rasp went away
Old 10-14-2006, 12:22 PM
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headers definitly change the sound of your car, before my header install i didnt mind the sound but after i didnt like it as much. now im looking to change my flowmaster muffler. but yours sounds good tho
Old 10-17-2006, 10:23 AM
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cool, im thinking of going with the borla XR1 muffler, i dunno how i will do the tips if i do. Summit sells there cheapest at around $125 3in/out single pipe exit. Not sure how i wanna do that. Waiting till this winter to get my full exhaust system on my car, most of it is in the garage as of now.

On my car now i have gutted cats with a flowmaster 80 series 2.5" catback...raspy as hell. Has a nice tone part of the time but i want a more refined deep tone. May put a cat on the car also so ill see.
Old 10-18-2006, 09:38 PM
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SOunds nice.got a clip of it driving by?
Old 10-18-2006, 10:58 PM
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Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally Posted by Friguy
SOunds nice.got a clip of it driving by?
Soon. I just need to go somewhere somewhat secluded since it is earsplittingly loud at WOT under load.
Old 10-28-2006, 12:15 AM
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Axle/Gears: 9 bolt 3.27
TPI383 I think the pavement gave up !!
nice setup you got there
Old 10-28-2006, 06:49 PM
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I probably missed it somewhere, but how big is your exhaust and tips?
Old 10-29-2006, 12:53 AM
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Car: 92 trans am/ 93 dodge spirit V6
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Transmission: TH-700-R4
Axle/Gears: 3.23
i have been reserching and doing mockups of my exhaust.. and i think i have found a way to get a true dual but not make it look like crap... it involves resonators.. there like a muffler but shorter... i cant wiat to get some picks once im done.. dual 2.5
Old 10-29-2006, 05:47 AM
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Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally Posted by Dairy King
I probably missed it somewhere, but how big is your exhaust and tips?
Mine is 2.5" from the headers to the I-pipe and 2-3/4" from the I-pipe to the muffler, and the muffler is 3"in and 3" out with dual 2.5" tips I believe.
Old 10-31-2006, 01:23 AM
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Dude, that sounds awsome. I don't know what you mean "too loud"...lol I think that's quieter than my Flowmaster.
Old 10-31-2006, 06:44 AM
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Originally Posted by Ozz1967
Dude, that sounds awsome. I don't know what you mean "too loud"...lol I think that's quieter than my Flowmaster.
The camcorder doesn't reproduce the sound pressure that you hear live.
I am going to get a drive-by shot of the exhaust at WOT under load sometime this week. i'll see if I can borrow a dB meter from someone so you can see the numbers and we compare exhaust loudness.

I also need to get new bolts so that I can swap out the plates, the stock bolts look like they will break when I try to remove them since they are so rusty.
Old 11-03-2006, 02:28 PM
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Sounds great. I have a 91 Z28 350ci with no cats and flowmaster 80 series muffler, sounds a litlle raspy. I was going to change mufflers but found that shifting through the auto makes it sound a world better, so I decided to change from the 700r4 to a T56.
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