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29-07-2006, 09:07 AM
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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im just wondering what differences people have noticed in fitting a 2.5" cat back to an AU I6. Im thinking that there wouldnt be much difference over the factory 2.25" apart from having 1 or no mufflers.
so if you could post what brand it is and what the difference was, im trying to get an idea for going full system or cat back and trying to decide on 2.5" or 3". Thanks Bodie |
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29-07-2006, 11:16 AM
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Burnin Rubber
Join Date: Jan 2005
Location: Melbourne, Victoria
Posts: 1,824
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I dont have an exhaust, but i would say 2.5" is the go.
Most people have them ,and its difficult to set a 3" up without losing some back presure and thus losing performance.
__________________
2001 AUII Forte (LPG) K&N Air Filter Tickford Air Intake ***Coming Soon: Clear Side Repeaters*** Quote:
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29-07-2006, 11:22 AM
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#3 | ||
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TL40 Wagon?
Join Date: Dec 2004
Location: Sydney
Posts: 2,377
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cat back 2.5" exhaust is well worthwhile on its own a good mod evene without ectractors. With extractors it all starts to work very well.
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29-07-2006, 08:40 PM
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#4 | |||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Quote:
What are your thoughts? Price for a 2.5 twin muffler system is about $300 right? The cat is about $125? Am I in the ball park? GK
__________________
2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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30-07-2006, 08:34 AM
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#5 | ||
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TL40 Wagon?
Join Date: Dec 2004
Location: Sydney
Posts: 2,377
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A 2.5" catback exhaust with one free flow muffler before the rear axle and a resonator after and a decent exhaust tip should come in under $350. This will sound good and give a small power increase. A high flow cat is a waste of time power wise unless yours is old or blocked. I got one but felt I got conned into it by exhaust guy to lazy to weld up the std cat which I believe on an AU will flow more than any six will need.
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30-07-2006, 08:47 AM
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#6 | |||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Quote:
GK
__________________
2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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30-07-2006, 09:24 AM
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#7 | ||
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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so what about the redback and HM exhausts on ebay for around $300 - $350 + postage? are they any good or is it better to go to an exhaust shop and get either an off the shelf or custom one? its just that i live in alice springs, and theres only really one decent shop here lol
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factory vs aftermarket cat back exhaust
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