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Old 07-08-2010, 04:11 PM   #1
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Changing Muffler ?

this may seem like a stupid question but would changing the stock muffler on my svt affect the performance ?


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Old 07-08-2010, 04:44 PM   #2
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it would, but it may not be very noticeable. if you put one on that has better flow it will give you some but it may be debateable as to how much you will feel. one thing that may help that you would feel would be a full length exhaust that is bigger
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Old 07-08-2010, 04:49 PM   #3
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You'll only change the sound output with a different muffler...no noticeable power increase.
In fact, 90% of the aftermarket systems won't even show a power increase on the SVTF, and several have shown a loss.
^^^Yes, it's that good right out of the box.

Until you go to a 2-1/2" or 3" system (including changing to a 2-1/2" or 3" flex pipe) with a HFC or ORP, you really won't do anything power-wise with the exhaust system.
And, most of the gain will be from the HFC or ORP as it is.
(HFC=High Flow Cat. ORP=Off Road Pipe)
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Old 07-08-2010, 04:52 PM   #4
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yea im more worried about changing the stock muffler hurting my performance, ive been trying to find a muffler similar to the stock one but haven't had any luck yet
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Old 07-08-2010, 06:52 PM   #5
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Unless you get a muffler with a million baffles in it, it won't hurt performance. Get a straight through oval Magnaflow muffler. It will keep the sound increase moderate and definitely not hurt performance. As Doug said, the power comes from replacing your catalytic converter.
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Old 07-08-2010, 09:16 PM   #6
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Quote:
Originally Posted by WD40 View Post
You'll only change the sound output with a different muffler...no noticeable power increase.
In fact, 90% of the aftermarket systems won't even show a power increase on the SVTF, and several have shown a loss.
^^^Yes, it's that good right out of the box.

Until you go to a 2-1/2" or 3" system (including changing to a 2-1/2" or 3" flex pipe) with a HFC or ORP, you really won't do anything power-wise with the exhaust system.
And, most of the gain will be from the HFC or ORP as it is.
(HFC=High Flow Cat. ORP=Off Road Pipe)
so what that said, yto receive the FULL efftec of a ORP/HC. an after market flex would be recommended...
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Old 07-08-2010, 09:20 PM   #7
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if you want small gains and noise get an off road pipe
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Old 07-08-2010, 11:07 PM   #8
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Anybody got any good videos (without music) of some SVT exhausts on a relatively as close to stock SVT? I'd like to not have an obnoxious loud ricey noise but would like to get a deeper tone. My stock exhaust sounds pretty damn meaty--just want more meat! lol
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Old 07-09-2010, 12:23 PM   #9
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Quote:
Originally Posted by blackjack View Post
so what that said, yto receive the FULL efftec of a ORP/HC. an after market flex would be recommended...
^^^Affirmative.
Having a matching size flex pipe would maximize the gains of the HFC or ORP.

However, I did see a worthwhile gain in the bottom/midrange with only the CFM HFC on an otherwise stock exhaust.
Sound (volume) increase is just about all I could stand though.
If it were any louder, I'd have to quiet it down somehow.
(I don't like to draw too much attention running around town anymore. )
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Old 07-09-2010, 12:30 PM   #10
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Quote:
Originally Posted by VonKaiser View Post
Anybody got any good videos (without music) of some SVT exhausts on a relatively as close to stock SVT? I'd like to not have an obnoxious loud ricey noise but would like to get a deeper tone. My stock exhaust sounds pretty damn meaty--just want more meat! lol
My exhaust. Only mods done to the car are FS SRI and the Trubendz 2.5" Stainless exhaust with the Borla muffler option. No res. Stock Cat and flex

YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
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