Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

TEST piPES?? PRObLEM!!!!!

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Old Feb 11, 2009 | 09:32 PM
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TEST piPES?? PRObLEM!!!!!

{{{!!!!!!!!!!!!! Originaly in tech area but i didnt get any help.. no Responses>>>??!!!____so i just recently installed megan racing resonated test pipes, and after the instaltion i fired it up and the stock oem Y pipe is ratttling around. every time i hit the gas around 2500 RPM or everytime i get on it... was wondering if theres an easy fix to this maybe have a exhaust weld me somthing to hold it inplace or just by a brand new megan racing Y pipe... if anyone else has had this problem feedback would be great.. also im still runing all oem exhaust. Please help me. could it because the Y pipes is 2 yr old..with TP and the vibration is too much.. or ........is there a mount that im missing???
 
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Old Feb 11, 2009 | 09:33 PM
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did you install it or a shop? maybe somethings not tightened all the way
 
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Old Feb 11, 2009 | 09:45 PM
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when we lifted the car i was underneath it and heard it coming from the Y pipe..not the test pipes.. i guess too much pressure now is moving the oem pipe around right where the heat sheild is.. sooo i dunno if i have to buy a brand new after market Y pipe?
 
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Old Feb 11, 2009 | 09:45 PM
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and we did it at a shop
 
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Old Feb 11, 2009 | 10:12 PM
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????????
 
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Old Feb 11, 2009 | 10:13 PM
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Check your hangers dude, maybe the fitment may be slightly off?
Dont forget your exhaust moves around freely, it's just held by hangers and a few bolts.
I'd re-raise your car up and double check all the connections and make sure while you're at it that you don't have anything out of place.

good luck.
 
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Old Feb 11, 2009 | 10:16 PM
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did you guys try to put pressure on the pipe to see if the heat shield is moving around and hitting anything. ive come across this when putting things on another car that made the heat shield hit.

do the megan testpipes have the bracket on them like stock cats do?
 
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Old Feb 11, 2009 | 10:18 PM
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i didnt get a good chance to look at the fitments of the hangers but , the y pipe had alot of space to move around ...not sure how much its supposed to have>??? its gatta be the old metal mesh crap on the stock one expanding and closing when i get on and off of it
!!!
 
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Old Feb 11, 2009 | 10:21 PM
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no they did not have any brackets on them?? on the stock cats it had a brace.that sat under the motor.. but these had no brackets soo we left the brace off.. but like i said the rattle is deffinatley coming from that area....
 
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Old Feb 11, 2009 | 10:29 PM
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i would imagine that its swaying without having the bracket on the test pipes like the stock cats.
 
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Old Feb 11, 2009 | 10:33 PM
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maybe.... dunnno im gunna try and rap up that heat sheild on the Y pipe and maybe stop it from rattiling so much.. do you know if i rapped the little metal mesh part at the bend with heat wrap would it do anything to my exhaust at all??
 
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Old Feb 11, 2009 | 11:40 PM
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Get your Billet Grille cutie on the rack....:)

Get your car back on the rack tighten all bolts/nuts. While it's still on the
rack start the car so you can locate the noise you're concerned about, should
be an easy fix.
Gary
 
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Old Feb 12, 2009 | 12:27 AM
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check your o2 sensor!!! ive had that noise before make sure its tightend
 
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Old Feb 12, 2009 | 01:11 AM
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i had that problem but it wasnt the y pipe, it was the bracket where the test pipes go that werent tightened enough, the bracket looks like a C
 
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Old Feb 12, 2009 | 12:25 PM
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It wasn't the o2 senors.. And also when the car was lifted I could see the heatsheild vibrating back and forth causing that rattling sound..its only when I gas it so I think when the flew joint...expanding.. And when it " deflates" lol it shakes likes crazy making it sound like crap
 
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