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Old 04-21-2011, 09:39 PM   #1
MannyLobo
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Location of X-/H-pipe

Here's my idea for my "custom" exhaust which is being fab'd up from the stock '05/'06 system:

Stock Mids ('05/'06).

Stock Resonator ('05/'06) is being replaced with a Stolen Fox H-pipe.

I want to install some Bullet/Spintech mufflers in the '04 location.

Everything after the H-pipe would be pipe, and my dual tips on both sides.

My question to all of you is: With the H-pipe AFTER the mufflers, will that give a lot of unnecessary noise? Should I have the H-pipe installed before the mufflers, or should everything be ok?

Drone isn't going to bother me too much, but I definitely don't want too much rasp/popping.
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Selena: 2004 QSM/Black A4 - Bone Stock: 13.591 @ 102.10 (60': 2.030) - [Street Tires] - [3/26/10]
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Old 04-26-2011, 11:22 PM   #2
Poolshark1321
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Ummmm I have never heard of someone doing the H or X pipe after the mufflers like your talking about. Also you said your putting the h pipe in where the stock res was... and mufflers in the 04 spot... sooo thats still behind the h or x pipe area. Also might consider putting them in the 05/06 spot so you have more weight towards the back of the car. Also easier to fit different sized mufflers there.
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Old 04-26-2011, 11:53 PM   #3
MannyLobo
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Quote:
Originally Posted by Poolshark1321 View Post
Ummmm I have never heard of someone doing the H or X pipe after the mufflers like your talking about. Also you said your putting the h pipe in where the stock res was... and mufflers in the 04 spot... sooo thats still behind the h or x pipe area. Also might consider putting them in the 05/06 spot so you have more weight towards the back of the car. Also easier to fit different sized mufflers there.
Yeah... it was just a general question about the location.

Plenty of mufflers will fit in the '04 position. Otherwise... '04s wouldn't have space to modify. I'm not getting something too large, so I know they'll fit. Someone on ls1gto PM'd me, and recommended all types of mufflers.
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Selena: 2004 QSM/Black A4 - Bone Stock: 13.591 @ 102.10 (60': 2.030) - [Street Tires] - [3/26/10]
Show: Interior/Exterior LEDs, 35W 5000K HIDs, Clear Side Markers, '05/'06 Hood, '06 Tails, Cut '04 Bumper with PFYC Rear Inserts
Go: LPE Intake, Ported TB, Ported LS6 Intake, Custom '05/'06 Exhaust with Dynomax Bullets & Stolen Fox H-pipe
Whoa: Powder Coated '05/'06 Brakes, Russell Stainless Lines, Drilled/Slotted Rotors

Chelsea: 2005 GMC Yukon SLT - Deep Blue Metallic --- The New Daily
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Old 06-15-2011, 06:08 PM   #4
littlecrunch2000
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Manny,

Look at the other post in this section about the best headers (http://gastiresoil.com/showthread.php?t=2240) posts #15 and #16 and take a look at my setup I have. I added soem pictures a while ago with a worded description of what you would be looking at.

If you have any questions about my setup, let me know.
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Old 06-15-2011, 07:19 PM   #5
MannyLobo
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Wow... your setup is pretty much the route I want to go. Except I'll be doing an H-pipe, different mufflers, and dual tips on both sides.

How much did yours cost you, in the end? I want to get an idea, so I can save up for it.
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Selena: 2004 QSM/Black A4 - Bone Stock: 13.591 @ 102.10 (60': 2.030) - [Street Tires] - [3/26/10]
Show: Interior/Exterior LEDs, 35W 5000K HIDs, Clear Side Markers, '05/'06 Hood, '06 Tails, Cut '04 Bumper with PFYC Rear Inserts
Go: LPE Intake, Ported TB, Ported LS6 Intake, Custom '05/'06 Exhaust with Dynomax Bullets & Stolen Fox H-pipe
Whoa: Powder Coated '05/'06 Brakes, Russell Stainless Lines, Drilled/Slotted Rotors

Chelsea: 2005 GMC Yukon SLT - Deep Blue Metallic --- The New Daily
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Old 06-16-2011, 03:49 PM   #6
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I want to say I spent around $300 for the pieces (x-pipe, mufflers, tips, and shipping), but I also got the Magnaflow mid pipes as well. Al of my exhaust is either special piping or Magnaflow parts. The actual piping was done at Brake Specialists in Austin by a group of guys I know very closely. I pretty much stole the labor from them and paid for the pipes themselves in that aspect. I will say that I LOVE my setup and get very little drone (I can use a bluetooth ear piece) and great low raw power sound from the tips (4" diamter by 12" length).
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Show: Panasonic Strada, XM, Image Dynamic components, Infinity mids, JL Audio 8" subs in rear deck, Alpine M500 and F450, HID's, short shifter, my creation rear seat delete.
Go: P&P and milled LS6 Heads,TSP 228R cam, Ported Intake and TB, Kooks LTs, Powerbond UDP, MagnaFlow full exhaust, Svede CAI, MSD & NGK, 160*, 05-06 brakes.

Tuned by Corey at Henderson - NEW-441/410 with mods in sig --- PB: 13.42 @ 104.5 and 1.94 60' with only headers, exhaust and CAI.
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Old 06-16-2011, 05:35 PM   #7
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Nice.

I'm gonna have the PFYC inserts, as well. I can't wait for that whole new look.
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Selena: 2004 QSM/Black A4 - Bone Stock: 13.591 @ 102.10 (60': 2.030) - [Street Tires] - [3/26/10]
Show: Interior/Exterior LEDs, 35W 5000K HIDs, Clear Side Markers, '05/'06 Hood, '06 Tails, Cut '04 Bumper with PFYC Rear Inserts
Go: LPE Intake, Ported TB, Ported LS6 Intake, Custom '05/'06 Exhaust with Dynomax Bullets & Stolen Fox H-pipe
Whoa: Powder Coated '05/'06 Brakes, Russell Stainless Lines, Drilled/Slotted Rotors

Chelsea: 2005 GMC Yukon SLT - Deep Blue Metallic --- The New Daily
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Old 06-16-2011, 06:20 PM   #8
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When ya gonna do it, Manny? You bought my stock exhaust like a year ago.
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Old 06-16-2011, 09:12 PM   #9
MannyLobo
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Still lookin for a job, man. I'm gonna have to suck it up, soon, and get some kinda retail/warehouse job.
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Selena: 2004 QSM/Black A4 - Bone Stock: 13.591 @ 102.10 (60': 2.030) - [Street Tires] - [3/26/10]
Show: Interior/Exterior LEDs, 35W 5000K HIDs, Clear Side Markers, '05/'06 Hood, '06 Tails, Cut '04 Bumper with PFYC Rear Inserts
Go: LPE Intake, Ported TB, Ported LS6 Intake, Custom '05/'06 Exhaust with Dynomax Bullets & Stolen Fox H-pipe
Whoa: Powder Coated '05/'06 Brakes, Russell Stainless Lines, Drilled/Slotted Rotors

Chelsea: 2005 GMC Yukon SLT - Deep Blue Metallic --- The New Daily
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Old 07-12-2011, 10:01 PM   #10
svede1212
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You know most setups I see are backwards anyways (big pipes leading to bigger tips) so if you're going for the sound and looks you want then what works, works. Mid muffs will give less drone. The best GTO exhaust would have a X past the LTs into mid mounted muffs and then out slightly smaller diameter pipes to small tips. Gases cool and lose volume and velocity as they travel back. The ideal is to keep the velocity the same without increasing back pressure.
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Old 07-12-2011, 11:42 PM   #11
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^ Interesting... thanks for info Svede!
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Old 07-13-2011, 08:55 AM   #12
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I've read quite a bit on exhaust theory and it's pretty interesting stuff and a lot more involved than a big pipe. It also made sense after I read it. Google around and you'll find a lot of info.
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Old 07-13-2011, 06:00 PM   #13
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Will do...
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