Want to pull the trigger on an xpipe, last minute questions. - Page 2 - Pontiac G8 Forum: G8 Forums - G8Board.com
Exhaust Tech Headers, Catbacks, Mufflers, lack of mufflers

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post #21 of 32 (permalink) Old 12-06-2012, 02:12 PM
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my .02, get rid of the resonators as well. I was very pleased with my set up (@ the time) after I did the xpipe and resonator delete.
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post #22 of 32 (permalink) Old 12-06-2012, 02:32 PM
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Sure, ditch the stock resonators, they neck down to less than 2" ID/OD

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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2010 Silverado 1500 LT Crew 5.3L
Magnaflow 14619, K&N Drop Filter, Airraid MIT, UPR Catch Can, American Outlaw Deputy 17x9, BFG 285/70/17 TKO, Bilstein 5100's
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post #23 of 32 (permalink) Old 12-06-2012, 02:46 PM
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I have LT's into custom x-pipe, into GXP mufflers, no resonators...love it!

G8 GT

Last edited by LSTGR81; 12-06-2012 at 08:26 PM.
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post #24 of 32 (permalink) Old 12-06-2012, 02:48 PM
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Quote:
Originally Posted by Nothin_But_Tail_Lights View Post
What's wrong with having a little sound and speed in a daily driver? I drive mine every day, rain or shine. Well, or snow for that matter, which is coming soon lol. I say get rid of the resonators, I had it both ways on my 08 G8, and liked it much better without them. But that's just my two cents.
Can you guys let my wife know there's nothing wrong with a little (or lot) sound from a DD??

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2008 Liquid Red G8 GT
RotoFab CAI, Pace Setter long tube headers,
X-Pipe, Hooker Maxflow Axlebacks waiting to be installed, Cincy Speed dyno tune.

355 rwhp/370 lbs ft tq.

30% Tint, V8 6.0 Litre badges, Pontiac lettering debadge on the trunk
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post #25 of 32 (permalink) Old 12-06-2012, 02:58 PM
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My wife loves it!! She tries to get me to let her drive it all the time (no way in he@@ that's happening. She was even planning on getting the Maggie for me herself, until she realized how much it cost lol. But I digress, sorry for the thread jacking!

2008 Black G8 GT - R.I.P (Totaled May 2012)
New ERA OTR Intake, Kooks LT Headers, Koxks X-pipe & Axel Back, Tein suspension

2009 Red G8 GT - Daily driver
Maggie 2300 @ 9 psi with rear 1:1 cog drive, KB BAP, Livernois Stage 1 Cam Kit, 3 Bar Map, Milled Heads, Ported TB & Intake, Doug Thorley LT headers, Borla exhaust, Roto Fab CAI, Eibach lowering Springs, BMR Trailing Arms, BMR Toe Rods, GXP Front Fascia and Rear Diffuser, Tuned by Livernois Motorsports...
592rwhp & 544rwtq

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post #26 of 32 (permalink) Old 12-06-2012, 03:58 PM
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foreosu, thanks for posting the videos. I think it sounds great! tame and undercontrol but still sounds like a powerful muscle car at startup and when you put your foot into it. I'll be going to the same setup except the magnaflow muffler style xpipe and still undecided on which LT headers to get.
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post #27 of 32 (permalink) Old 12-06-2012, 04:34 PM
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I deleted my previous post because i just added a new thread with a little exhaust clip, she won't be that loud with resonators removed if you keep the stock mufflers, those things are too quiet, even with the resonators removed. mine is loud, puurrrffect loud , but i don't have stock mufflers.

Startup clip with Pacesetters LT's and no cats, Magnaflow X with Magnapack mufflers

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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2010 Silverado 1500 LT Crew 5.3L
Magnaflow 14619, K&N Drop Filter, Airraid MIT, UPR Catch Can, American Outlaw Deputy 17x9, BFG 285/70/17 TKO, Bilstein 5100's
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post #28 of 32 (permalink) Old 12-06-2012, 10:04 PM Thread Starter
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No resos it is for me, listened to a car with both versions on youtube and it seems too quiet with them on there, not much of a change from what I have now. Just wondering how my neighbors will like me after this gets done
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post #29 of 32 (permalink) Old 12-06-2012, 10:48 PM
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Here is a crappy Before / After x pipe vid i made -


09 PBM G8 GT -
Built By Rick Crawford Racing
404 Stroker / Ported LSA Blower / Kooks / Built Trans / Alky Methanol
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9.89 @ 138.8
09 WH GXP M6 (#1827 of 1829)
Roto-Fab / Solo Mach Shorty
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post #30 of 32 (permalink) Old 12-07-2012, 06:38 AM Thread Starter
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My second main concern is how loud the cabin will be. Right now i have the SLP Loudmouths and the drone can get pretty loud sometimes. Personally it doesnt bother me a ton but i do carry passengers from time to time.
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post #31 of 32 (permalink) Old 12-07-2012, 08:45 AM
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"Sure, ditch the stock resonators, they neck down to less than 2" ID/OD"
The resonators are a full 2.25" straight through. The pipe between the mid-muffler and the resonators is crushed down to less than 2". If you are going to keep stock mufflers, you can remove them and you won't hear much of a difference. If you are running anything else, and it's your DD. think about keeping them. they are meant to cancel specific frequencies
and help keep drone down. At WOT they don't do much. So they can keep crusing quieter, but still bark at WOT.

'09 SRM GT. VCM Intake, Saxonpc MAF Screen 5:1, Cortex,1.85 Rockers/105# Springs, JBA shorty's, Solo H/F Cats, Solo Mach Balanced. BMR Sway bars, Superpro strut mounts, Whiteline Rear Subframe Bushing, Mevotech arms. PPV struts/shocks, Tein Springs. MPSS Tires
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post #32 of 32 (permalink) Old 12-07-2012, 01:11 PM
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I cut mine out, I love the little pop you get when you take your foot of the gas.

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MODS: DEBAGDED, GXP DIFFUSER, HID, BLACK ROOF, TINT, STRAIGHT PIPE, ROTO-FAB, VMR-V710 20X9 SQUARED
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