Exhaust inlet /outlet size ? - Pontiac G6 Forum
 
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post #1 of 6 (permalink) Old 08-05-2010, 04:54 PM Thread Starter
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Exhaust inlet /outlet size ?

Have found a Flowmaster 80 series muffler I want to put on my G6 GT ... Just wondering what should the inlet and outlet sizes be... I really dont even know what size my original stock pipes are ...
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post #2 of 6 (permalink) Old 08-05-2010, 04:57 PM
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Your original pipes are 2-1/4".
On my first exhaust I bumped it up to 2.5" and
ran it from the flange north of the resonator on back.

I recommend 2.5 in and a double 2.5 out to either 3.5" tips or 4".
I had both. prefer the 4".

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post #3 of 6 (permalink) Old 08-05-2010, 06:39 PM Thread Starter
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Thanks Lampoon ... I think its cool that not only do you know the facts, but you also give advice, because youve already done just about everything to your 6 ... Ide be lost with out ya !
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post #4 of 6 (permalink) Old 08-05-2010, 06:44 PM
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Here to help...cause I love the G6!
Your resonator is 37lbs of crap. I recommend you replace it with a flow through muffler.
If you dont then your Flowmaster or Magnaflow or whatever you replace your muffler with will have a rasp. Cherrybomb makes a cheap flow through...
Also- Dont go bigger than 4" around on the flow through resonator replacement or you will bottom it out over parking lot bumps, etc.

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WAMS High Performance Tune and a whole lot more....

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post #5 of 6 (permalink) Old 08-12-2010, 11:20 AM
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Quote:
Originally Posted by Lampoon View Post
Here to help...cause I love the G6!
Your resonator is 37lbs of crap. I recommend you replace it with a flow through muffler.
If you dont then your Flowmaster or Magnaflow or whatever you replace your muffler with will have a rasp. Cherrybomb makes a cheap flow through...
Also- Dont go bigger than 4" around on the flow through resonator replacement or you will bottom it out over parking lot bumps, etc.
Might be a stupid question but will taking the stock resonator off void any kinda of warranty? Last thing I want is rasp when I do this

2008 Pontiac Sedan - 3.5 V6


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post #6 of 6 (permalink) Old 08-12-2010, 11:24 AM
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and how long is the stock resonator if i put a glasspack in its place?

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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