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Old 09-09-2006, 03:30 AM   #1
AnorexicSTI
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Default COBB exhaust hanger review

Easy to install, so I won't bother describing. I removed the rear heat shield while I was at it... saved a whole 1lb! Woohoo! The engineering has come a long way since the 90's... a similar part on my Honda would have weighed 2 lbs... everything in the STI is made for lightweight... super thin aluminum, plastic whenever possible... hollowed out brackets, I-beam type brackets, min. length of brackets... engineers have done an awesome job with weight minimization.

So far, to be honest, I don't like these hangers... they cause a lot of added NVH at certain RPM's... under full throttle, doesn't matter, but part throttle at certain RPM's, the whole car vibrates to the tune of the exhaust... what is the purpose of these things again? To prevent the exhaust from hitting something? The COBB exhaust is really well engineered for fit... so I don't recall hitting anything except on a hard launch I will hear a bit of a clunk back there but other than that, I don't see the purpose of these things... I will prob. go back to stock...

The other alternative is to maybe use 1-2 polyurethane and the rest rubber...which out of the 4 hangers is the most critical for preventing that "whap" on a hard launch?
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Old 09-09-2006, 03:34 AM   #2
semaj
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The "whap" under the hard launch probably isn't even your exhaust...it is probably your rear diff moving, which is a common Subie issue under hard launches and shifts. Get the TiC rear clunk stopper bushings (between rear diff and subframe) and that should stop it. Another worthwhile $35 bushing set, from what I hear.
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Old 09-09-2006, 03:38 AM   #3
Reckon
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Originally Posted by 02wrx88 View Post
they cause a lot of added NVH at certain RPM's... under full throttle, doesn't matter, but part throttle at certain RPM's, the whole car vibrates to the tune of the exhaust..
Ditto - though mine does it more so at idle. and I've got the wrx exhaust on my GC

P.s. Kartboy was selling hangers in limited color STI pink (imo much cooler) when i checked a month ago.
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Old 09-09-2006, 03:46 AM   #4
AnorexicSTI
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Originally Posted by Reckon View Post
Ditto - though mine does it more so at idle. and I've got the wrx exhaust on my GC

P.s. Kartboy was selling hangers in limited color STI pink (imo much cooler) when i checked a month ago.
Mine does a bit at idle, but not that much... it's just annoying... I don't see how these "improve" anything. Bad mod... unless u have a crappy fitting exhaust... for a highly engineered product like the COBB, I think these hangers are a detriment. Will come off when I install the CF driveshaft which everybody seems to be giving me flack about

You can't even see the hangers so why would the color matter? Well, if u get on your hands and knees, u can see the 2 rear ones... and if u get down on your tummy, u can see the 2 inner ones... lol.
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Old 09-09-2006, 03:47 AM   #5
AnorexicSTI
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Originally Posted by SubieDrift View Post
The "whap" under the hard launch probably isn't even your exhaust...it is probably your rear diff moving, which is a common Subie issue under hard launches and shifts. Get the TiC rear clunk stopper bushings (between rear diff and subframe) and that should stop it. Another worthwhile $35 bushing set, from what I hear.
Ah... thanks Subiedrift... got that on my to do list...
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Old 09-09-2006, 03:53 AM   #6
Reckon
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true true, but maybe i just like having a bit more pink on my car - even underneath it

i guess aftermarket exhausts tend to be heavier - and if you've been using the stock hangers for a while as i have, they start to break down and the exhaust can sway - prior to the cobb hangers mine swung against the swaybar.

Oh. Kartboy sold out of Pink exhaust hangers
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Old 09-09-2006, 03:53 AM   #7
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w00t! he didn't like something! I was starting to get a bit worried, you were starting to sound like a Cobb representative

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Old 09-09-2006, 04:08 AM   #8
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Quote:
Originally Posted by SubieDrift View Post
The "whap" under the hard launch probably isn't even your exhaust...it is probably your rear diff moving, which is a common Subie issue under hard launches and shifts. Get the TiC rear clunk stopper bushings (between rear diff and subframe) and that should stop it. Another worthwhile $35 bushing set, from what I hear.
Yup...works very well on my STi....worth the small $ cost of the fix.
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Old 09-09-2006, 04:33 AM   #9
AnorexicSTI
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Originally Posted by amarpauld View Post
w00t! he didn't like something! I was starting to get a bit worried, you were starting to sound like a Cobb representative


haha... nah... that just happens to be the first set of mods I did... since my car came with cobb cat back, made sense to get cobb downpipe and the shifter bushings and other items I got seem to be pretty much the same from other companies, so I just got them all at once to keep it simple.
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