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11-07-2018, 09:28 PM
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Starter Motor
Join Date: Jul 2018
Posts: 4
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Hi guys,
Was a member a long time ago but unfortunately had to sell my old car. But I am now back in a ford on the form of a BA XR8. I'm looking for advice with the exhaust. When I bought it there had been a twin 2.5" cat back manta exhaust, twin pipes went into a big single center muffler then into a large resonator on each side at the rear. with duel rear exit and quad tips. Looked great. But was very quiet. Almost sounded like a 6 unless I opened it up. I replace the middle muffler with twin pipe so it was straight through into the mufflers at the rear. Sounds way better. But still isn't what I want. And it may just be mind over matter but it feels slower than it was before. After doing some research I found that twin hot dogs in the center and twin dogs at the rear sounds amazing, but before I do this is this a good move performance wise? What is the best option performance wise. Sorry if this has been covered before but I just don't know enough about this subject. TIA Kane |
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12-07-2018, 11:01 AM
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#2 | ||
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FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Wollongong
Posts: 3,115
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is there a merge pipe or was the merge in the centre muffler? merge pipes kill noise but help scavenging and power
__________________
CURRENT RIDES BA GT Mk1 #0009 - Narooma Blue SY Ghia AWD Black VZ LX8 Adventra Holden HX 50th Anniversary AU Saloon Car racecar 1980 GS1000ST - Wes Cooley Rep
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12-07-2018, 11:20 AM
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#3 | ||
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Starter Motor
Join Date: Jul 2018
Posts: 4
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The exhaust fitter said he removed something that he called a mixer. From what I know from the cats there is straight pipe all the way to the twin exit rear mufflers
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12-07-2018, 11:21 AM
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Starter Motor
Join Date: Jul 2018
Posts: 4
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The mixer as he called it was before the center muffler
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12-07-2018, 11:36 AM
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#5 | ||
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FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Wollongong
Posts: 3,115
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that would be the crossover, like and x-pipe but int he muffler. it would sound fluffy without it and maybe more like a new mustang??
got any sound files? my GT sounds too smooth so i'd like to remove the centre muffler i have a similar system on my LS1 and sounds crap just drones
__________________
CURRENT RIDES BA GT Mk1 #0009 - Narooma Blue SY Ghia AWD Black VZ LX8 Adventra Holden HX 50th Anniversary AU Saloon Car racecar 1980 GS1000ST - Wes Cooley Rep
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12-07-2018, 12:00 PM
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#6 | ||
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Starter Motor
Join Date: Jul 2018
Posts: 4
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It sounds a little bit fluffy. I will take some photos and a sound clip later today and post them up. I will have it on a hoist later today. Removing the center muffler definately killed 90% of the drone. And I'm not unhappy with how it sounds now. Just worried that I may be suffering performance wise. No point having a beastly sounding car that is under performing
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12-07-2018, 12:24 PM
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#7 | ||
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FF.Com.Au Hardcore
 
Join Date: Nov 2007
Location: Riff
Posts: 12,398
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What does fluffy sound like?
__________________
FGII XR6 IN LIGHTNING STRIKE R52 SIII IN GUN METALLIC |
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12-07-2018, 01:30 PM
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#8 | |||
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FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Wollongong
Posts: 3,115
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Quote:
it was really choppy and it was through the whole rev range
__________________
CURRENT RIDES BA GT Mk1 #0009 - Narooma Blue SY Ghia AWD Black VZ LX8 Adventra Holden HX 50th Anniversary AU Saloon Car racecar 1980 GS1000ST - Wes Cooley Rep
Last edited by ebv8; 12-07-2018 at 01:57 PM. |
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12-07-2018, 01:50 PM
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#9 | |||
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Moderator
  
Join Date: Feb 2005
Location: Kenthurst
Posts: 40,403
 
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Quote:
Only use the section after "=" in the youtube URL between the [yt] tags
__________________
The Current Stable 2016 SZII TS Territory RWD Petrol The Evolution of the EGA54D utes AU Workshop Build thread of EGA54D B-Series Workshop Build thread of EGA54D 2004 SX TX Territory AWD - Gone but not forgotten 2010 FG XT "The ex-rental" - Moved onto a new home Mechan1k's Flickr Page |
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12-07-2018, 04:53 PM
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#10 | ||
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FF.Com.Au Hardcore
Join Date: Jun 2017
Posts: 1,341
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I have extractors, 200 cell cats, x-pipe, dual two & one quarter inch pipes and just two mufflers. I am really happy with the sound, quiet enough around town but when you floor it, its loud and has definitely improved performance. This is on a 302 Windsor, not the 5.4 motor, but the lesson I learnt was to go a little smaller in diameter to aid scavenging and leave off the resonators that most add after the two mufflers. Definitely add an X-pipe as well, it helps smooth out the sound and maximise power. Have a chat to Best Exhaust & ask for Chris. He has been doing this for 30 years.
https://www.bestmufflers.com |
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12-07-2018, 07:38 PM
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#11 | |||
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PURSUIT 250
 
Join Date: Mar 2009
Location: sydney
Posts: 5,835
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Quote:
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BA XR8 Exhaust
Linear Mode
