Fordmods Logo

new exhaust sounds crap 

 

Page 1 of 1 [ 10 posts ] 

 
 Post subject: new exhaust sounds crap
Posted: Fri Dec 24, 2010 10:45 pm 
Oompa Loompa
Offline
User avatar

Age: 28

Posts: 35

Joined: 9th Mar 2005

Ride: AUIII XR8 ute

Location: melbourne
VIC, Australia

i got a custom system made a couple of weeks ago on my XR8 ute, i got high flow 100cell cats into single 2.5 all the way over the diff then split into 2 x 2 1/4 on each side with a 6"x12" round mufflers each side, sounds good when i rev it but when taking off hard it has a tinny rattle until about 3500rpm or so then sound good up top.

its also to drony when taking off but is almost silent at 110kmh.

will putting a hotdog in the centre between the cats and diff make it even deeper? and im not sure why the note is crap when below 3000rpm, its good when driving slow though. ive heard a few other 8's with the same s**t sound
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Sun Dec 26, 2010 11:42 am 
EFI Guru
Offline

Age: 52

Posts: 4289

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Should be twin 2 1/4" or 2 1/2" all the way. Stack two Lukey ultra flow mufflers in the original muffler position and no others.
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Sun Dec 26, 2010 4:07 pm 
Oompa Loompa
Offline
User avatar

Age: 28

Posts: 35

Joined: 9th Mar 2005

Ride: AUIII XR8 ute

Location: melbourne
VIC, Australia

I can't get any mufflers before the diff because it's on LPG otherwise I would do that, I like the look of the twin out the back too
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Sun Dec 26, 2010 7:45 pm 
EFI Guru
Offline

Age: 52

Posts: 4289

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

Perfect opportunity to get rid of the LPG :wink: Or maybe stack the twin 2 1/4" pipes past the LPG tank and put the two mufflers right up the back side by side.
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Wed Dec 29, 2010 7:13 pm 
Getting Side Ways
Offline

Age: 32

Posts: 942

Joined: 23rd Dec 2007

Ride: AU1 XR8

Glass pack mufflers (redback) , single muffler in each pipe should give it a deep growl.
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Wed Dec 29, 2010 9:19 pm 
Oompa Loompa
Offline
User avatar

Age: 28

Posts: 35

Joined: 9th Mar 2005

Ride: AUIII XR8 ute

Location: melbourne
VIC, Australia

I'm not sure what the mufflers are on there but it's fully run in now and doesn't drone as much, it also sounds better on LPG rather than petrol for some reason, it does the crap tinny sound more on petrol. Il go to where I got it done over the holidays and mabey see how some other mufflers sound
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Wed Dec 29, 2010 9:44 pm 
EFI Guru
Offline

Age: 52

Posts: 4289

Joined: 5th Nov 2004

Gallery: 28 images

Ride: 351 Vogue,XH 5.0,'17 5.0 Stang

Location: Perth
WA, Australia

The tinny sound is more power...petrol has greater energy when it explodes.
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Fri Dec 31, 2010 9:23 pm 
Getting Side Ways
Offline

Age: 32

Posts: 942

Joined: 23rd Dec 2007

Ride: AU1 XR8

Chambered mufflers are s**t if you can change to glass packs, deeper sounding and no tinny noise.

I had 3 chambered muffler on my raptor powered ebxr8 and i wasnt impressed.
Top
 Profile  
 
 
 Post subject: Re: new exhaust sounds crap
Posted: Sat Jan 01, 2011 11:38 am 
Getting Side Ways
Offline
User avatar

Age: 64

Posts: 3552

Joined: 7th Nov 2004

Gallery: 4 images

Power: 482 rwkw

Location: Penrith
NSW, Australia

Bigger [tail] pipe from muffler helps with deeper sound..

 

_________________

As in ZOOM 126 edition
331 Dart block,3.25/ 4340 steel crank, Oliver rods,TFS ported track heat heads, TFS track heat inlet Twin SC61 turbo's
Project 1UZ-EF has started.. S475 Turbo 4.0 V8 Mustang Celica.....

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 10 posts ] 

Who is online

Users browsing this forum: No registered users and 9 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Sat Dec 16, 2017 5:11 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names