Dual Exhaust vs. Single - Pontiac G6 Forum
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post #1 of 29 (permalink) Old 08-31-2010, 02:29 PM Thread Starter
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Dual Exhaust vs. Single

Hey everyone,

Just a quick question, I was reading online today that a single exhaust will give you more HP and Torque than a Dual Exhuast. Is that true? I like the look of the dual exhaust but i don't really want to give up HP and Torque. Not that I want to race or something but I don't want to give up power.

Thanks!

2008 Pontiac Sedan - 3.5 V6


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post #2 of 29 (permalink) Old 08-31-2010, 02:56 PM
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Most the people on this forum have dual tips with single muffler. So there basically allowing a more free flowing stock setup.
I think what your refering to is adding True Dual from the exhaust manifold. Wish depending you engine and tune could loose some low end torque.. But sometimes you gain HP.
It really depends on Your engine.
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post #3 of 29 (permalink) Old 08-31-2010, 02:58 PM Thread Starter
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I want to do the single muffler to dual tips. I'm in canada so getting the GTR here would be a wee bit pricey ha

2008 Pontiac Sedan - 3.5 V6


Mods so far:
Sylvania Silverstars, Custom Air Intake with Heat shield , 17' Salsa Rims from FastWheels.ca, Lower Grille Chrome Accents, Windows Visors, Hood Deflector, Debadged, Silver Overlays, Eyelids, Recessed Upper Grille, Tinted Tails, GM Strut Bar

Coming Soon - In Order:
Racingline MMI
Racingline Grounding Kit

Updated: 02/22/2011

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post #4 of 29 (permalink) Old 08-31-2010, 03:02 PM
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The G6 dual exhaust system shares a common resonator, exhaust pipe, & muffler, therefore is not a true dual exhaust system.
The only thing different I can think of is a drop in back pressure from a less restrictive system design, but that usually a good thing.


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post #5 of 29 (permalink) Old 08-31-2010, 03:08 PM
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Quote:
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The G6 dual exhaust system shares a common resonator, exhaust pipe, & muffler, therefore is not a true dual exhaust system.
The only thing different I can think of is a drop in back pressure from a less restrictive system design, but that usually a good thing.

i recently got the dual exhaust installed (picture above) the only difference i see is i'm getting better highway gas mileage. the HP is the same if not a slight better.
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post #6 of 29 (permalink) Old 08-31-2010, 03:12 PM
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how does it sound??? I ve always been curious about the GMPP exhaust

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post #7 of 29 (permalink) Old 08-31-2010, 03:15 PM Thread Starter
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Quote:
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how does it sound??? I ve always been curious about the GMPP exhaust

yeah could you post a video?? I find it weird that I can't use that exhaust on my car according to them because i have the 3.5L just doesnt fit i guess??

2008 Pontiac Sedan - 3.5 V6


Mods so far:
Sylvania Silverstars, Custom Air Intake with Heat shield , 17' Salsa Rims from FastWheels.ca, Lower Grille Chrome Accents, Windows Visors, Hood Deflector, Debadged, Silver Overlays, Eyelids, Recessed Upper Grille, Tinted Tails, GM Strut Bar

Coming Soon - In Order:
Racingline MMI
Racingline Grounding Kit

Updated: 02/22/2011

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post #8 of 29 (permalink) Old 08-31-2010, 03:33 PM
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I think the reason they say that is because yours came with a single exhaust outlet vs. the dual. but its a cat back so I dont think youd have a problem with it fitting. just need the rear valance.

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post #9 of 29 (permalink) Old 08-31-2010, 04:19 PM Thread Starter
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sweet there is one video online about the GMPP but its not very good quality. And its only the single was looking for more the dual exhaust

2008 Pontiac Sedan - 3.5 V6


Mods so far:
Sylvania Silverstars, Custom Air Intake with Heat shield , 17' Salsa Rims from FastWheels.ca, Lower Grille Chrome Accents, Windows Visors, Hood Deflector, Debadged, Silver Overlays, Eyelids, Recessed Upper Grille, Tinted Tails, GM Strut Bar

Coming Soon - In Order:
Racingline MMI
Racingline Grounding Kit

Updated: 02/22/2011

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post #10 of 29 (permalink) Old 08-31-2010, 05:37 PM
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Quote:
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how does it sound??? I ve always been curious about the GMPP exhaust
i stand corrected, i actually had mine custom made at meineke muffler. they used a camaro muffler with buffers. it has a little sound to it just enough to be noticed. not so much like a magna flow muffler. i leave for work at 5am so i don't want to wake up the neighborhood. i should post some new pics up soon. have lowered my car and put black overlays over the darts.
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post #11 of 29 (permalink) Old 08-31-2010, 05:40 PM Thread Starter
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ahhh camaro muffler eh? you should post a vid either way haha i'm trying to find an idea of what i want in a exhaust any help is awesome

2008 Pontiac Sedan - 3.5 V6


Mods so far:
Sylvania Silverstars, Custom Air Intake with Heat shield , 17' Salsa Rims from FastWheels.ca, Lower Grille Chrome Accents, Windows Visors, Hood Deflector, Debadged, Silver Overlays, Eyelids, Recessed Upper Grille, Tinted Tails, GM Strut Bar

Coming Soon - In Order:
Racingline MMI
Racingline Grounding Kit

Updated: 02/22/2011

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post #12 of 29 (permalink) Old 08-31-2010, 05:42 PM
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Quote:
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yeah could you post a video?? I find it weird that I can't use that exhaust on my car according to them because i have the 3.5L just doesnt fit i guess??
check around to see if you can get it custom made at any muffler shop. mine is custom with dual tips with a single muffler.
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post #13 of 29 (permalink) Old 08-31-2010, 05:45 PM
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Quote:
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ahhh camaro muffler eh? you should post a vid either way haha i'm trying to find an idea of what i want in a exhaust any help is awesome
your best bet is to go to any muffler shop and ask their opinion. at first someone suggested a flowmaster muffler. sounded to mean for a sports compact like the G6. then had it swapped out with the one i got now. i actually like it. the sound is there but not to much. i dont think a video will do any justice for it.
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post #14 of 29 (permalink) Old 08-31-2010, 06:02 PM Thread Starter
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Quote:
Originally Posted by smc971 View Post
your best bet is to go to any muffler shop and ask their opinion. at first someone suggested a flowmaster muffler. sounded to mean for a sports compact like the G6. then had it swapped out with the one i got now. i actually like it. the sound is there but not to much. i dont think a video will do any justice for it.
Yeah i don't want anything at is going to sound too loud but something noticeable enough that when I accelerate there is a nice smooth sound

2008 Pontiac Sedan - 3.5 V6


Mods so far:
Sylvania Silverstars, Custom Air Intake with Heat shield , 17' Salsa Rims from FastWheels.ca, Lower Grille Chrome Accents, Windows Visors, Hood Deflector, Debadged, Silver Overlays, Eyelids, Recessed Upper Grille, Tinted Tails, GM Strut Bar

Coming Soon - In Order:
Racingline MMI
Racingline Grounding Kit

Updated: 02/22/2011

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post #15 of 29 (permalink) Old 08-31-2010, 09:13 PM
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Does anyone know if the GTR exhaust would void the powertrain warranty
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