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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 07-24-2009, 10:17 AM   #1
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Pros & Cons on muffler delete

Can some one explain the basic Pros and cons of the stock muffler delete, for example power gains or power loss ect ect.
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Old 07-24-2009, 10:32 AM   #2
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As "I" understand it.. Power gains= NIL sound a little toooo raw for my liking search the forum you find plenty of video. The Muffler is already quite free flowing from the pics.... However you will shed about 20 lbs..
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Old 07-24-2009, 10:59 AM   #3
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giod about said it all. . .

Power gains = 0
Sound Gain = Objective
Weight reduction - 20lbs
Visual = lots better the two gas tank mufflers aren't there
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Old 07-24-2009, 11:28 AM   #4
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I just had it done this week. I actually saw dyno improvements of 6 HP and 9 TQ. I will be posting up my Dyno sheet and videos tonight. I agree with the other comments. Sound is a little deeper with a decent increase in volume. May be too loud for some, but it sounds good. The gurgling on deceleration is also much more noticeable now. That is probably a personal preference. Looks wise, it’s a HUGE improvement and yes the mufflers were several pounds each.
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Old 07-24-2009, 03:50 PM   #5
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Nice a car like this should be loud as !@#$ any way. Im definitly gonna have it done this week.
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Old 07-24-2009, 04:13 PM   #6
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As "I" understand it.. Power gains= NIL sound a little toooo raw for my liking search the forum you find plenty of video. The Muffler is already quite free flowing from the pics.... However you will shed about 20 lbs..
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Originally Posted by franknbeans View Post
giod about said it all. . .

Power gains = 0
Sound Gain = Objective
Weight reduction - 20lbs
Visual = lots better the two gas tank mufflers aren't there


Go with a nice set of smaller, low restriction mufflers. They'll be lighter, and wont be as raspy as the plain muffler delete.
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Old 07-24-2009, 04:18 PM   #7
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Go with a nice set of smaller, low restriction mufflers. They'll be lighter, and wont be as raspy as the plain muffler delete.
I agree! I used the Summit brand 12 inch glass pack mufflers.
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Old 07-24-2009, 04:34 PM   #8
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we seemed to lose a little back pressure
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Old 07-24-2009, 04:59 PM   #9
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Old 07-24-2009, 05:16 PM   #10
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we seemed to lose a little back pressure
that usually happens when you put a less restrictive exhaust on.
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Old 07-24-2009, 05:24 PM   #11
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Pros & Cons on muffler delete

Pro's: It's Loud..

Con's: It's Loud..
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Old 07-24-2009, 05:44 PM   #12
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Pros & Cons on muffler delete

Pro's: It's Loud..

Con's: It's Loud..
Pro's: It's Loud..

Con's: It's not "good" Loud..
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Old 07-24-2009, 05:55 PM   #13
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http://www.slponline.com/view_product.asp?P=31211
sounds prety good i ordered this. But if the stock mufflers arent restrictive it sure sounds like it. You probably arent going to get a whole lot of hp. I was guessing 6-10hp gain. You will probably lose 40lbs as well so that will give a small small small hp to weight ratio gain
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Old 07-24-2009, 07:19 PM   #14
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why would anyone spend 450 bucks on the loud mouth axle back when you can get it done at a muffler shop for 150 bucks.
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Old 07-24-2009, 07:53 PM   #15
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why would anyone spend 450 bucks on the loud mouth axle back when you can get it done at a muffler shop for 150 bucks.
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Old 07-25-2009, 07:56 AM   #16
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why would anyone spend 450 bucks on the loud mouth axle back when you can get it done at a muffler shop for 150 bucks.

I see where your coming from but below is the reasons.

1. SLP is stainless and will last 5 times longer than aluminum that your local shop would use.

2. Your getting the shole system from SLP, so if doesnt work out etc you can replace it with the stock system with some sleeves. If you go to shop they are going to chop out muffler and have to weld your tips back on etc.

3. I think I trust SLP to modify and come up with something more than some meneike muffler shop.

4. SLP is about half the price of other offering the same product ie sweet thunder, corsa etc.
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Old 07-25-2009, 08:18 AM   #17
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Quote:
Originally Posted by Supermans View Post
Pros & Cons on muffler delete

Pro's: It's Loud..

Con's: It's Loud..
true

Quote:
Originally Posted by FNKNSTN View Post
Pro's: It's Loud..

Con's: It's not "good" Loud..
also true

Quote:
Originally Posted by nards444 View Post
I see where your coming from but below is the reasons.

1. SLP is stainless and will last 5 times longer than aluminum that your local shop would use.

2. Your getting the shole system from SLP, so if doesnt work out etc you can replace it with the stock system with some sleeves. If you go to shop they are going to chop out muffler and have to weld your tips back on etc.

3. I think I trust SLP to modify and come up with something more than some meneike muffler shop.

4. SLP is about half the price of other offering the same product ie sweet thunder, corsa etc.
And the SLP LM II has a good sound that won't piss off nearby neighborhoods everytime you jump on it.
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Old 07-25-2009, 08:50 AM   #18
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its not as loud as you think
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Old 07-25-2009, 10:28 AM   #19
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why would anyone spend 450 bucks on the loud mouth axle back when you can get it done at a muffler shop for 150 bucks.

I'll give you two reasons...nobody in my area deals with stainless (would have had to go with aluminized...no thanks) and then add the mandrel bent pipes. I can do it myself in my own garage and someone else isn't hacking away at my car. $404 shipped.

Last edited by CAM75; 07-25-2009 at 04:36 PM.
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Old 07-25-2009, 10:31 AM   #20
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its not as loud as you think
Exactly...I don't know if it is different between the LS3 vs. L99 but on my A6 it is definitely not loud or raspy. It has a great tone (SLP Loudmouth). If I would had wanted any quieter I might as well just left it stock in my opinion.
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Old 07-25-2009, 11:23 AM   #21
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I see where your coming from but below is the reasons.

1. SLP is stainless and will last 5 times longer than aluminum that your local shop would use.

2. Your getting the shole system from SLP, so if doesnt work out etc you can replace it with the stock system with some sleeves. If you go to shop they are going to chop out muffler and have to weld your tips back on etc.

3. I think I trust SLP to modify and come up with something more than some meneike muffler shop.

4. SLP is about half the price of other offering the same product ie sweet thunder, corsa etc.
My uncle just did this to his car at alocal speed shop, 110 bucks cash for stainless steal mandrin bent installed inplace of the mufflers. Im actually on my way over to check it out in a few minutes here if it sounds nice I know what ill be doing this weekend.
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Old 07-25-2009, 11:52 AM   #22
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i went with the Magnaflow Comp Series exhaust, its practically identical to SLP Loudmouths b/c its a muffler delete axle back system.
i like Magnaflow's tips better, and they're available now; SLP is on backorder until early September!!!

check out my thread with pics of the system:
http://www.camaro5.com/forums/showthread.php?t=34071
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Old 07-25-2009, 02:34 PM   #23
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My uncle just did this to his car at alocal speed shop, 110 bucks cash for stainless steal mandrin bent installed inplace of the mufflers. Im actually on my way over to check it out in a few minutes here if it sounds nice I know what ill be doing this weekend.
Wow, that's an even better price than I got for the exact same setup... BTW, I weighed the stock mufflers. Without the tips, they're 18 lbs. each, so I'd say the weight savings are closer to 25-30 lbs.
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Old 07-26-2009, 05:08 PM   #24
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this is before i put the CAI and x-pipe on. just a muffler delete w/ black Stainless tips

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Old 07-26-2009, 06:00 PM   #25
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Muffler delete won't get loud untill you get rid of the cats and resonators.
But trust me, add some long tube headers and high flow cats, the muffler delete setup with get pretty darn loud.
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