Notices
LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

Custom exhaust question

Thread Tools
 
Search this Thread
 
Old May 10, 2016 | 02:20 PM
  #1  
Jks24's Avatar
Jks24
Thread Starter
Pole Position
5 Year Member
 
Joined: May 2016
Posts: 202
Likes: 0
From: NY
Default Custom exhaust question

I am not very knowledgeable about v8's coming from the mitsubishi band camp so this is my question. If you are making a custom exhaust the center piece that connects from the two cats (Y-pipe) is it better for that to be two 2.25-2.5 inch pipes all the way back or would a single 3 inch pipe that y's off at the rear for the mufflers be better? Also please do not say the stock exhaust is better engineered then anything i can come up with or how theres not enough back pressure because there both wrong. I am more curious about the volumetric efficiency of two pipes vs one thanks.

Last edited by Jks24; May 10, 2016 at 03:04 PM.
Reply
Old May 10, 2016 | 06:23 PM
  #2  
911LE's Avatar
911LE
Instructor
 
Joined: Dec 2015
Posts: 878
Likes: 232
From: Arizona
Default

2 2.5" pipes will flow more air than a single 3". Simple math you can do yourself. Area of a circle=radius x radius x 3.14.
Reply
Old May 13, 2016 | 10:38 AM
  #3  
Jks24's Avatar
Jks24
Thread Starter
Pole Position
5 Year Member
 
Joined: May 2016
Posts: 202
Likes: 0
From: NY
Default

Ohhh gotcha thank you yah but i was wondering does one pipe or 2 work better for the center section regardless of size or is the one pipe method make the air to turbulent on its way outv the exhaust? Sorry for the poorly worded question.
Reply
Old May 14, 2016 | 11:13 PM
  #4  
PRSUIT460's Avatar
PRSUIT460
Racer
iTrader: (3)
 
Joined: Oct 2003
Posts: 1,467
Likes: 16
From: Wisconsin
Default

2 with an X-Section
Reply
Old May 17, 2016 | 07:00 AM
  #5  
Jks24's Avatar
Jks24
Thread Starter
Pole Position
5 Year Member
 
Joined: May 2016
Posts: 202
Likes: 0
From: NY
Default

Originally Posted by PRSUIT460
2 with an X-Section
Ok cool man thanks for your help.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dasgroup
GX - 1st Gen (2003-2009)
0
May 18, 2019 09:46 AM
1Timz
IS F (2008-2014)
2
Jan 30, 2019 02:06 PM
door
Performance
12
Nov 14, 2012 09:26 PM
superpower
SC - 1st Gen (1992-2000)
4
Apr 17, 2012 11:09 PM
go4dabukz
Performance
2
May 30, 2007 09:04 AM




All times are GMT -7. The time now is 08:38 PM.

story-0
Toyota and Lexus Join Mille Miglia For The First Time

Slideshow: A five-car lineup spanning more than five decades of Toyota performance and engineering will tackle one of Italy's most celebrated automotive routes.

By Verdad Gallardo | 2026-06-15 16:53:16


VIEW MORE
story-1
Lexus NX 350h: A Fuel-Sipping Secret Hot Hatch???

Slideshow: a quick review of the 2026 Lexus NX 350h F Sport Handling

By Michael S. Palmer | 2026-06-15 15:25:34


VIEW MORE
story-2
5 Best & 5 Worst Lexus Daily Drivers

Slideshow: The 5 best and 5 worst Lexus daily drivers

By Joe Kucinski | 2026-06-15 11:14:58


VIEW MORE
story-3
Top 5 Hottest Lexus & Toyotas in 2026 (Hardest To Buy)

These five Lexus and Toyota models are the most sought-after on the market right now.

By Brett Foote | 2026-06-15 10:47:52


VIEW MORE
story-4
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-5
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-6
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE
story-7
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

Slideshow: 10 Lexus bargain that are cheaper than a new Toyota.

By Joe Kucinski | 2026-05-20 10:28:20


VIEW MORE
story-8
8 Weirdest Things Lexus Has Ever Built

Slideshow: From hoverboards to luxury yachts, these are the strangest projects Lexus has ever attached its badge to.

By Verdad Gallardo | 2026-05-16 11:34:36


VIEW MORE
story-9
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE