LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Post up your Rear muffler set-up!!! In need of inspiration!!

Thread Tools
 
Search this Thread
 
Old 07-08-12, 01:12 AM
  #46  
no1gsxr
Driver
 
no1gsxr's Avatar
 
Join Date: Dec 2008
Location: Florida
Posts: 120
Likes: 0
Received 0 Likes on 0 Posts
Default

Hey jrm where are you located. I would like to hear your exhaust. Im planning on doing the same exhaust on my 91
Old 07-08-12, 06:46 AM
  #47  
python
Lexus Champion
iTrader: (4)
 
python's Avatar
 
Join Date: Jan 2008
Location: ca
Posts: 1,840
Received 26 Likes on 24 Posts
Default

can u remove the resonators legally in california
Old 07-08-12, 12:48 PM
  #48  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

you can replace everything after the cats and still be legal to the letter of the law, limit or sound however is 95Db when tested in accordance with SAE J1169.
Old 07-08-12, 01:13 PM
  #49  
jrm7885
Pole Position
 
jrm7885's Avatar
 
Join Date: Oct 2008
Location: fl
Posts: 212
Likes: 0
Received 0 Likes on 0 Posts
Default

I am in Orlando. Don't know if that is close to you or not.
Old 07-10-12, 05:58 AM
  #50  
akitomk3
Lead Lap
iTrader: (2)
 
akitomk3's Avatar
 
Join Date: Jan 2009
Location: Va
Posts: 424
Likes: 0
Received 0 Likes on 0 Posts
Default

^^ picstures of exhaust?
Old 07-10-12, 10:13 AM
  #51  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

Originally Posted by akitomk3
^^ picstures of exhaust?
uhh who are you asking ?
Old 07-10-12, 11:18 AM
  #52  
McPierson
Instructor
iTrader: (3)
 
McPierson's Avatar
 
Join Date: Jun 2011
Location: Missouri
Posts: 765
Received 152 Likes on 83 Posts
Default

I'm not trying to stir the pot I'm just adding my experiences as well as some limited understanding to the post. I've had two exhaust designs that I didn't quite get right (quiet enough).

The reason that a resonator will knock down more of the higher frequencies is because more of the anti-nodes of the sound wave are contained within the resonator. So the longer your resonator the lower the frequency that a resonator can contain given all other things the same.

A chambered muffler takes sound energy converts it to mechanical energy (movement of the baffles), and cancels some of the wave on itself (I'm not convinced a lot of that happens). If someone took a well-designed baffled muffler and made it out of 1/2" thick steel it wouldn't do as good of a job.

On my H22a Prelude I put a highflow cat, the largest resonator and the largest Magnaflow that would physically fit in the two locations. It was way louder than what I was wanting (sounded pretty sweet, but I don't want to hear the car unless I'm popping VTEC).

On my Chevy K30 I put the largest Flowmaster I could get on and it's too loud too (sounds pretty sweet, but not what I'm going for). My Silverado has the stock cat and a long glass-pack (resonator) and it sounds better than either of the systems I put together.

So the answer is it depends on a lot of different things, pipe size, length, muffler type and quality, motor displacement, number of cylinders, and red-line are just a few. The best thing you can do is go listen to lots of cars and find a sound that you like and copy that. That's not usually possible, so you have to use the advice of people and your own judgment. The great thing about the LS is that you can just start disconnecting things to get a feel for how it would sound in a given situation.
Old 07-11-12, 06:05 AM
  #53  
akitomk3
Lead Lap
iTrader: (2)
 
akitomk3's Avatar
 
Join Date: Jan 2009
Location: Va
Posts: 424
Likes: 0
Received 0 Likes on 0 Posts
Default

I meant to ask jrm7785 since he said in the previous page he had his exhaust done
Old 06-19-13, 11:53 AM
  #54  
CIGLexus
Pit Crew
iTrader: (1)
 
CIGLexus's Avatar
 
Join Date: May 2013
Location: CA
Posts: 140
Likes: 0
Received 13 Likes on 13 Posts
Default LS400 UCF Exhaust Picture Thread

Examples (not mine):


5 Zigen Axle Back UFC10:
Part # FMT001P





5 Zigen Fireball Mega UFC21:


Last edited by CIGLexus; 06-20-13 at 03:04 PM.
Old 06-19-13, 08:28 PM
  #55  
akitomk3
Lead Lap
iTrader: (2)
 
akitomk3's Avatar
 
Join Date: Jan 2009
Location: Va
Posts: 424
Likes: 0
Received 0 Likes on 0 Posts
Default

Great idea, since we don't have one yet...right?

I think for the custom exhaust you should state what was done and maybe the parts involved.
Old 06-19-13, 08:46 PM
  #56  
CIGLexus
Pit Crew
iTrader: (1)
 
CIGLexus's Avatar
 
Join Date: May 2013
Location: CA
Posts: 140
Likes: 0
Received 13 Likes on 13 Posts
Default

Junction Produce (JDM):


Last edited by CIGLexus; 06-20-13 at 03:06 PM.
Old 06-20-13, 02:21 AM
  #57  
PureDrifter
BahHumBug

iTrader: (10)
 
PureDrifter's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 23,918
Received 94 Likes on 86 Posts
Default

you mean a thread like this?

merged.
Old 06-20-13, 06:08 AM
  #58  
akitomk3
Lead Lap
iTrader: (2)
 
akitomk3's Avatar
 
Join Date: Jan 2009
Location: Va
Posts: 424
Likes: 0
Received 0 Likes on 0 Posts
Default

Totally forgot about this thread hehe thanks PD
Old 06-20-13, 01:50 PM
  #59  
timmy0tool
Moderator
iTrader: (7)
 
timmy0tool's Avatar
 
Join Date: Sep 2008
Location: 714/949, SoCal
Posts: 6,927
Received 416 Likes on 371 Posts
Default

i was looking for this thread to help out but couldn't find it. PD to the rescue, and merge!
Old 08-29-13, 06:15 PM
  #60  
wheelies
Driver School Candidate
iTrader: (1)
 
wheelies's Avatar
 
Join Date: Dec 2009
Location: md
Posts: 34
Likes: 0
Received 0 Likes on 0 Posts
Default

Im newbe here.. Just bought a ucf21 last saturday and am looking at exhaust and ive been looking at these tips.. Whatcha think ??

http://www.ebay.com/itm/161087066829


Quick Reply: Post up your Rear muffler set-up!!! In need of inspiration!!



All times are GMT -7. The time now is 09:28 PM.