Notices
IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

cutting and welding stock headers

Thread Tools
 
Search this Thread
 
Old Jun 25, 2011 | 09:17 PM
  #1  
Avarec's Avatar
Avarec
Thread Starter
Lexus Test Driver
 
Joined: Mar 2009
Posts: 834
Likes: 0
From: MD
Default cutting and welding stock headers

to make straight piped exhaust, this sound like a good idea? my mechanic offered me it,
Reply
Old Jun 25, 2011 | 11:25 PM
  #2  
jadu's Avatar
jadu
live.love.laugh.lexus
15 Year Member
Liked
Loved
Community Favorite
iTrader: (42)
 
Joined: Oct 2008
Posts: 11,581
Likes: 90
From: CALI
Default

so he's gonna cut out all the cats and weld in the tubing?
Reply
Old Jun 26, 2011 | 11:05 PM
  #3  
Avarec's Avatar
Avarec
Thread Starter
Lexus Test Driver
 
Joined: Mar 2009
Posts: 834
Likes: 0
From: MD
Default

Yes sir he's a mad man
He ounce replaced a frame on a chevy Tahoe
He said to cut the cats off and weld the straigh pipes the what to do with my 02 sensors idk
Reply
Old Jun 27, 2011 | 09:36 AM
  #4  
anotherLS's Avatar
anotherLS
Lexus Champion
iTrader: (9)
 
Joined: Jul 2006
Posts: 2,111
Likes: 2
From: San Diego, CA
Default

u can use an o2 simulator from token solutions to bypass ur o2 sensors without having a check engine light
Reply
Old Jun 27, 2011 | 10:00 AM
  #5  
baadhabit's Avatar
baadhabit
Lexus Champion
iTrader: (2)
 
Joined: Apr 2002
Posts: 1,725
Likes: 1
From: NY to FL
Default

why go this route over just buying a set? why reinvent the wheel?
Reply
Old Jun 27, 2011 | 10:03 AM
  #6  
slidingIS's Avatar
slidingIS
Lead Lap
 
Joined: Jul 2010
Posts: 761
Likes: 1
From: Alabama
Default

^ true. Just buy hi flow cats
Reply
Old Jun 27, 2011 | 10:15 AM
  #7  
SLEEPING's Avatar
SLEEPING
Driver School Candidate
 
Joined: Jun 2011
Posts: 8
Likes: 0
From: FL
Default

Those cats are part of the header so I dont think he can get them in high flow. He could get the downstream one in high flow.
Reply
Old Jun 29, 2011 | 07:39 PM
  #8  
Avarec's Avatar
Avarec
Thread Starter
Lexus Test Driver
 
Joined: Mar 2009
Posts: 834
Likes: 0
From: MD
Default

well this could be a custom headers, yes i could shell out and buy aftermarket ones
but could these be better?

cut and weld bigger down pipes?

doesnt sound 2 bad,
Reply
ClubLexus Stories

Celebrating Lexus & Toyota from Around the Globe

story-0

10 Lexus Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-1

8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

 Michael S. Palmer
story-2

10 Best Lexus Models No One Remembers

 Joe Kucinski
story-3

TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

 Michael S. Palmer
story-4

Top 10 Lexus & Toyotas to Drive Before You Die!

 Joe Kucinski
story-5

Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

 Joe Kucinski
story-6

Lexus LC500 Convertible Auction: A Preview of Rising Values?

 Brett Foote
story-7

GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

 Michael S. Palmer
story-8

9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

 Joe Kucinski
story-9

2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

 Brett Foote
Old Jun 30, 2011 | 06:01 AM
  #9  
baadhabit's Avatar
baadhabit
Lexus Champion
iTrader: (2)
 
Joined: Apr 2002
Posts: 1,725
Likes: 1
From: NY to FL
Default

better in what way?

whats your shop's experience with header design? its not just weld up some pipes and youre done. there is some R&D involved
Reply
Old Jun 30, 2011 | 08:21 AM
  #10  
MY2J's Avatar
MY2J
Pole Position
iTrader: (2)
 
Joined: Apr 2007
Posts: 384
Likes: 0
From: Miami, FL
Default

I had my aftermarket y-pipe and header merged together... downside when I got rid of the car, the "one piece" went with it too
Reply
Old Jun 30, 2011 | 01:48 PM
  #11  
mex lex's Avatar
mex lex
Lexus Champion
iTrader: (4)
 
Joined: Dec 2006
Posts: 3,214
Likes: 2
From: Kyoei USA
Default

Sounds pointless to me. Why don't you just get aftermarket, you can even get them on ebay for crying out loud. Then tell him to weld a hi flow cat on the y-pipe if you don't want to be catless. I would even tell him to display his mad man skills and make the header and y-pipe one piece like MY2J so you can avoid any leaks. That way you can keep your factory header incase you ever have to go back to stock, emissions purposes, etc. Or you can sell it and recoup some of your money back.
Reply
Old Jun 30, 2011 | 07:30 PM
  #12  
Avarec's Avatar
Avarec
Thread Starter
Lexus Test Driver
 
Joined: Mar 2009
Posts: 834
Likes: 0
From: MD
Default

thats an idea, will tell him that

how does o2 sims work and where do they hook up to
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BS ISF
IS F (2008-2014)
62
Oct 15, 2015 07:04 AM
lexus316
Performance
12
Sep 25, 2014 05:53 PM
superpet39
GS - 2nd Gen (1998-2005)
4
Apr 12, 2013 01:43 PM
kevin.tran
GS - 2nd Gen (1998-2005)
6
Jul 4, 2011 12:43 AM
Salil022
SC - 1st Gen (1992-2000)
19
Oct 14, 2007 08:19 PM




All times are GMT -7. The time now is 08:42 PM.

story-0
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
story-1
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

Slideshow: How to Get the Best Fuel Economy with a Hybrid and Plug-In Hybrid!

By Michael S. Palmer | 2026-05-05 20:54:44


VIEW MORE
story-2
10 Best Lexus Models No One Remembers

Slideshow: 10 best Lexus models no one remembers.

By Joe Kucinski | 2026-05-05 17:33:28


VIEW MORE
story-3
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

Slideshow: diving into 4Runner TRD Off-Road Premium's pricing, performance, fuel economy, features, and amenities!

By Michael S. Palmer | 2026-04-23 13:09:18


VIEW MORE
story-4
Top 10 Lexus & Toyotas to Drive Before You Die!

Slideshow: the 10 Lexus and Toyota vehicles you need to drive before you die.

By Joe Kucinski | 2026-04-23 10:34:24


VIEW MORE
story-5
Top 10 Lexus/Toyotas With The LEAST 5-Year Depreciation

Slideshow: Top 10 Lexus/Toyota models with the lowest 5-year depreciation rate.

By Joe Kucinski | 2026-04-08 12:19:06


VIEW MORE
story-6
Lexus LC500 Convertible Auction: A Preview of Rising Values?

The LC hasn't even disappeared from the Lexus lineup yet, and we're already seeing signs of an explosive market.

By Brett Foote | 2026-04-06 09:25:02


VIEW MORE
story-7
GX 550 vs TX 550: Best 3-Row Luxury Lexus Family Hauler

Slideshow: comparing the pricings, specs, power, fuel economy, fun-factor, and features of the GX 550 Luxury+ and TX 550h+ Luxury.

By Michael S. Palmer | 2026-03-19 13:44:11


VIEW MORE
story-8
9 Best Lexus Models You Can Buy for Half Price (And 1 You Shouldn't!)

Slideshow: 9 best Lexus models you can buy for half price and 1 you should avoid

By Joe Kucinski | 2026-03-19 12:01:07


VIEW MORE
story-9
2026 Lexus NX Buyer's Guide: Models, Features, Prices & More!

Here's everything you need to know about the latest NX.

By Brett Foote | 2026-03-19 11:56:59


VIEW MORE