Need some help with exhaust - Pontiac G8 Forum: G8 Forums - G8Board.com
Exhaust Tech Headers, Catbacks, Mufflers, lack of mufflers

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post #1 of 21 (permalink) Old 01-26-2013, 01:15 PM Thread Starter
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Need some help with exhaust

I used to own a 00 mustang gt. I put in a X pipe and loved the sound that was the only mod I did on that car and it was louder then stock but nothing over the top that is what I want for my car.

I have a 09 g8 GT...fully stock exhaust...I did try some violators axleback and didnt care for the sound...it was way too loud inside the car.

so basically I want it to sound good on the outside but not have that humm on the inside.

probably stick with some kind of catback system, maybe in the future possibly do some headers.

Right now I have cortex tune and rotofab intake.

what do u recommend?
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post #2 of 21 (permalink) Old 01-26-2013, 03:51 PM
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I would recommend solo axle backs. Not too loud and they won't have the hum on the inside because there is no drone.

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post #3 of 21 (permalink) Old 01-26-2013, 03:58 PM
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One yo change your exhaust its always going to be louder in the car. I recomend wrapping the axle backs with exhaust wrap to minimize humm.
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post #4 of 21 (permalink) Old 01-26-2013, 04:14 PM
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The wrap won't do much... (if anything at all)
There's one company that will guarantee no drone is Corsa. Have them on my GXP and never had a issue. Many road trips to vegas and it was very pleasant... Like 2lazy said.. I've read solo doesn't drone, I never heard them so I can't say.

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post #5 of 21 (permalink) Old 01-26-2013, 05:25 PM
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I have borla cat back and there is a mild drone at cruzing speeds on the freeway. I havent wrapped my exhaust and I dont plan to. I guess if you want to avoid drone go with corsa.
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post #6 of 21 (permalink) Old 01-26-2013, 05:49 PM
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Solos don't drone either. Very happy with mine. Good luck.

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post #7 of 21 (permalink) Old 01-26-2013, 06:56 PM
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Solos will drone their ass off when cruising above 75mph with AFM, Like a back massage; horrible.


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post #8 of 21 (permalink) Old 01-26-2013, 08:01 PM
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post #9 of 21 (permalink) Old 01-26-2013, 08:09 PM
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Quote:
Originally Posted by 768MPH View Post
Solos will drone their ass off when cruising above 75mph with AFM, Like a back massage; horrible.
Solo's installed


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post #10 of 21 (permalink) Old 01-27-2013, 01:20 PM Thread Starter
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can someone post some links of the best place to buy? Should I just to axle back or go for the catback...looks like a decent catback can be had for about 800 on ebay....Id like to get a little extra power as well if possible...thanks
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post #11 of 21 (permalink) Old 01-27-2013, 01:22 PM
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http://solo-performance.com/

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post #12 of 21 (permalink) Old 01-27-2013, 01:35 PM
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Honestly your not going to get a noticable perfomance gain with a catback system. I have had solos and Pypes so far. Pypes is horrible. Solo is good until AFM turns. Sold both sets. You might be happier installing some headers. I just installed headers with the stock cat back and love the additional sound Inside the car when getting on it. Driving normal sounds stock. You can pick up some reasonably priced kooks mids for the same price as catbacks. You will need a tune though.

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post #13 of 21 (permalink) Old 01-27-2013, 01:38 PM
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Catback will not net any power gains as the Cats, or the neckdown into them, are the restriction.

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post #14 of 21 (permalink) Old 01-27-2013, 02:22 PM
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Quote:
Originally Posted by JCMG8 View Post
Catback will not net any power gains as the Cats, or the neckdown into them, are the restriction.
This.


2014 SS "Houston Stock"

Rotofab
RCR Intake/RCR TB
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Corsa Mufflers
Pat G Tune


12.08@114.45 (stock tires suck)
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post #15 of 21 (permalink) Old 01-27-2013, 03:42 PM
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Re: Need some help with exhaust

LT's are the best bang for the buck when it comes to our exhaust. Solid gains everywhere in the powerband, and easily measurable at the track. If you want something with cats that would provide gains and exhaust volume, hands down, spend the money in Kooks mids with HFC's. No CB would net you any gains. The Kooks mids are te best bang for the bug if you want to have Headers with HFC's.

With headers and Solos the car would be extremely loud, especially with LTs. Get something like Hooker Maxflows (no need for a cb unless you want to spend money), remove the resonators and throw an x pipe, And youll be all set for power and sound. (Tune required with headers)

If you want more aggression without being obnoxoius everywhere the Magnapacks I have will provide that. Magnapacks are more resonators than mufflers, theyre not as loud in this cars like they're in the stangs, but when paired with Lt's in this engines as well as LS2's, they deliver a mean sounding tone that is also controlled by thrrottle, they freaking loud at wot, kind of straight pipes, but they're less loud while cruising, but not as quiet as a full muffler.

Have fun.

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post #16 of 21 (permalink) Old 01-27-2013, 03:55 PM
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Quote:
Originally Posted by bluegoat06 View Post
LT's are the best bang for the buck when it comes to our exhaust. Solid gains everywhere in the powerband, and easily measurable at the track. If you want something with cats that would provide gains and exhaust volume, hands down, spend the money in Kooks mids with HFC's. No CB would net you any gains. The Kooks mids are te best bang for the bug if you want to have Headers with HFC's.

With headers and Solos the car would be extremely loud, especially with LTs. Get something like Hooker Maxflows (no need for a cb unless you want to spend money), remove the resonators and throw an x pipe, And youll be all set for power and sound. (Tune required with headers)

If you want more aggression without being obnoxoius everywhere the Magnapacks I have will provide that. Magnapacks are more resonators than mufflers, theyre not as loud in this cars like they're in the stangs, but when paired with Lt's in this engines as well as LS2's, they deliver a mean sounding tone that is also controlled by thrrottle, they freaking loud at wot, kind of straight pipes, but they're less loud while cruising, but not as quiet as a full muffler.

Have fun.

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I do LOVE the way your G8 sounds with the Magnapacks. I am torn on purchasing another set of axlebacks (maganpacks) to alternate between the two sounds. lol

Do you have any drone with those?


2014 SS "Houston Stock"

Rotofab
RCR Intake/RCR TB
LS7 MAF
SW LTs-3" catted X
Corsa Mufflers
Pat G Tune


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post #17 of 21 (permalink) Old 01-27-2013, 04:37 PM
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I went with the SOLO mach catback system and really enjoyed it without headers, but now that ive got LT's, the tone is perfect at idle/cruise but screams like a demon at WOT.

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post #18 of 21 (permalink) Old 01-27-2013, 10:26 PM
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Re: Need some help with exhaust

Quote:
Originally Posted by 768MPH View Post
I do LOVE the way your G8 sounds with the Magnapacks. I am torn on purchasing another set of axlebacks (maganpacks) to alternate between the two sounds. lol

Do you have any drone with those?
Oh yeah they drone. Is not bad when I'm driving alone. When the whole family is in the car, the buzz is more noticeable, but I don't sweat it, nothing that increasing some volume in the stereo won't fix. My 03 Mach1 droned a lot more, same as my 06 GTO, the drone in this car is nothing. Opinions would vary as some ears are more delicate. Once your hear how this fackers sound with lt's, the rest is history, even better when you add a cam. I had the packs in my GTO, so I just bought the packs again to run them in the G8. Fairly happy with them.

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post #19 of 21 (permalink) Old 01-28-2013, 08:53 AM
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so the magnapack is a straight through "glass pack" (perforated tube muffler), and the magnaflow has offset inlet/outlet?

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post #20 of 21 (permalink) Old 01-28-2013, 11:41 AM
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The packs are center/center, they don't have offset because they're just bullet style mufflers/resonators. check Magnaflow 14416's. they're similar to SLP LM2's, but the packs are 2.5" in/out and inside whereas the LM2's are just 2"
Here is back when i was running Kooks mids, she's a tad louder with LT's everywhere.

Magnapack mufflers (Magnaflow 14416's)

The Magnaflow 14419's are also Magnapacks, same enclosure size, but they're 3" in/out and inside.

2012 Mustang GT, M6, 3.73's, Base/Brembo Package
3" H Pipe/Stock cats, Res!/3" pipes, Magnaflow 14419's AB, UPR Catch Can
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