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Picked up my first ls1.. exhaust is very quiet

Old 08-08-2013, 07:15 PM
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Default Picked up my first ls1.. exhaust is very quiet

Managed to find a firebird formula with 22K miles, completely stock.

I watched a few stock exhaust firebird formula videos on youtube and they are all loud and have a nice rumble.

At idle my car does not seem to have any rumble. It's very quiet.

It really opens up in acceleration but I am wondering why my idle is so quiet.

Silencer?
Old 08-08-2013, 07:17 PM
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it has stock exhaust.
Old 08-08-2013, 07:21 PM
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Pics to maybe help?





Originally Posted by groundZ-28ERO
it has stock exhaust.
Yes I am aware it is the stock exhaust, but when I watch videos of other peoples completely stock exhaust it is decently loud at idle/startup.
Old 08-08-2013, 07:25 PM
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mine was whisper quiet back before i swapped out exhaust systems.
Old 08-08-2013, 07:27 PM
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It's probably just the camera that makes them sound loud. These cars are very quiet stock, it doesn't help that you have the base Formula/Trans Am catback either. My SS has the CME and it reminds me of a stock truck exhaust with how quiet it is.
Old 08-08-2013, 07:34 PM
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I see. This is the video that got me wondering


[youtube]SoeYt3Myfx0[/youtube]
Old 08-08-2013, 07:35 PM
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drill some holes in the muffler
Old 08-08-2013, 07:38 PM
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That seems to be in a garage. Sounds is bouncing off the walls.
Old 08-08-2013, 08:54 PM
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i will add that that formula in the video, may have, most likely has over 5 times the milage of urs. with only 22k miles, ur car is still new in many senses, and its my expiriance that exhaust gets louder over years if milage is higher. so either put another 100k on urs to get that sound, or buy a lm2 catback, and it will sound better.
Old 08-08-2013, 10:17 PM
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Cut the cats! Lol
Old 08-10-2013, 10:10 AM
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groundZ-28ERO 06:35 PM 08-08-2013 drill some holes in the muffler

^^ plz don't.
Old 08-10-2013, 10:12 AM
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JDEP162 07:54 PM 08-08-2013 i will add that that formula in the video, may have, most likely has over 5 times the milage of urs. with only 22k miles, ur car is still new in many senses, and its my expiriance that exhaust gets louder over years if milage is higher. so either put another 100k on urs to get that sound, or buy a lm2 catback, and it will sound better.

^^ I agree its the low mileage.. get a cat back if you don't like it...just don't go cutting shyt on a 22k car be happy you have something so nice not a rattle trap.
Old 08-10-2013, 10:20 AM
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I'll say welcome to the club! And don't be disappointing if the car is too smooth for you :-)
Another variable is temperature. When it's cold out the car is much louder on idle. I'm sure that's to do with the timing, fuel trim etc.

I will say IMHO that the LT1 has a much better sound. But that's just me.
Old 08-10-2013, 10:37 AM
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Nothin better then a LS, loud mouth , and LT's baby!!!
Old 08-14-2013, 09:04 AM
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buy my magnaflow for a nice deep rumble and old school muscle car sound
Old 08-14-2013, 10:59 AM
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As other's have stated, stock exhaust is very quiet. Videos you hear can be deceptive depending on the camera and conditions. Like mentioned above, any exhaust will be louder when the engine is first started cold (as compared to warmed up), especially on a car with cats (they quiet the exhaust much more as they warm up).

Originally Posted by bad_408_vert
buy my magnaflow for a nice deep rumble and old school muscle car sound
When combined with stock manifolds and cats, Magnaflow is only slightly louder than stock at idle, IMO. This system is good for someone that's looking for a slight increase in sound but not too loud, or to tame an LT/ORY setup. I wouldn't suggest it to anyone that's looking for an "old school muscle car sound" on their otherwise stock car though. For something like that, you really need a chambered system/muffler or a Loudmouth or similar muffler-less type cat back.
Old 08-14-2013, 01:21 PM
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Default SLP Loudmouth 1!

Old 08-14-2013, 08:41 PM
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dam thats a killer sounding TA
Old 08-14-2013, 08:48 PM
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Originally Posted by mikews6
nice!!!


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