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Old 05-23-2015, 05:34 PM   #26
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Passengerside seat vibrating?
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Old 05-24-2015, 10:48 AM   #27
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It sounds like it happens when you're hitting the gas so maybe look around the throttle body or cable or even the gas pedal where it mounts. It sure is an annoying sound though!
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Old 05-24-2015, 10:51 AM   #28
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Know anyone with one of those fancy sound tracers? They like clip on to locations in the car and you can switch between spots in the car so u can hunt it down lol
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Old 05-24-2015, 01:36 PM   #29
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Well, I think I found it.

Decided to open up the cutout (it sounds better and spools better) and on a whim, tossed some hose over the brake lines where they dive behind the brake booster. IDK if its in my head, but squeak is gone.

Other than that, 76mm whistle is zamazings.
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repo bigals turd gen and part it out to a loving home
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Old 05-24-2015, 02:13 PM   #30
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So it was the brake lines rubbing?! What do I win?
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I can appreciate a dream but this person needed some real friends.
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Old 05-24-2015, 02:30 PM   #31
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Will take some more test drives tmmr and verify noise is gone.
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repo bigals turd gen and part it out to a loving home
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Old 05-24-2015, 08:57 PM   #32
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1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41

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I can appreciate a dream but this person needed some real friends.

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Old 05-24-2015, 09:59 PM   #33
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Gtfo.... hope its gone though.
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Old 05-25-2015, 09:34 AM   #34
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My guess is its the cutout plate or hardware.
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Old 05-25-2015, 10:46 AM   #35
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nuts loose in drivers seat
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Old 05-25-2015, 06:17 PM   #36
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Noise still remains, just can't hear it as well over the turbo whistle.
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Old 07-21-2015, 09:17 AM   #37
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Smoking gun theory part duex?!

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Old 07-21-2015, 10:08 AM   #38
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I think we all generally agreed exhaust leak from that whole area lol. Does the flange look flat?
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Old 07-21-2015, 10:18 AM   #39
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Not sure yet, will be tossing on mill bed at lunch to check.
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repo bigals turd gen and part it out to a loving home
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Old 07-21-2015, 11:12 AM   #40
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yowsa. what gaskets are those? hopefully the flange is flat like brian said lol
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LPP LT Headers & ORY, PCM4LESS Tune, GMMG Catback, TPIS Air Foil, SPEC Clutch, STB, BMR SFCs, Boxed Stock LCAs, 4.11s, Koni 4/4s, Strano Springs & Sway Bars, UMI Adj T/A and Reloc Xmember, Adj PHB, MGW Shifter, LS1 Front Brakes, BLS HIDs, Full Sound System!
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Old 07-21-2015, 11:26 AM   #41
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I think we all generally agreed exhaust leak from that whole area lol. Does the flange look flat?
Didn't we say that a bazillion time?

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Old 07-21-2015, 01:34 PM   #42
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Didn't we say that a bazillion time?

Calm down sir, I never said it wasn't the gasket leaking. I was trying every option I could before pulling the header off. Two hours of misery so didn't wanna do that for nothing.
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repo bigals turd gen and part it out to a loving home
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Old 07-21-2015, 04:35 PM   #43
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Calm down sir, I never said it wasn't the gasket leaking. I was trying every option I could before pulling the header off. Two hours of misery so didn't wanna do that for nothing.
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Old 07-21-2015, 05:31 PM   #44
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Thread depicts two months of misery... Two hours seems win
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It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Old 07-22-2015, 08:41 PM   #45
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After many a curse word, new header gasket in, all stud/nuts tightened down, and still makes the noise.

I give up.
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Old 07-22-2015, 08:56 PM   #46
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Do you though?
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Good. He microwaved my phone 6 years ago, i hope his intake erupts.
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Old 07-22-2015, 09:57 PM   #47
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Did you check to see if it was straight? or if the turbo pipes are pulling it off the head maybe?
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Old 07-23-2015, 07:09 AM   #48
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Flange was not perfect but more than good enough. I bolted header to head and let it sit then attached crossover to it so I am fairly confident thats not causing any issues.

Back to square one.
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Old 07-23-2015, 07:30 AM   #49
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Eh?
https://www.youtube.com/watch?v=EUCR...e_gdata_player
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Old 07-23-2015, 07:47 AM   #50
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Would have been good if that guy in the vid showed if it made that noise just on the initial turn. Hmm...
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