Notices
Performance Forced induction, intakes, exhausts, torque converters, transmissions, etc.

removing the Cat, but keeping everything else

Thread Tools
 
Search this Thread
 
Old Jun 19, 2007 | 05:21 PM
  #31  
lobuxracer's Avatar
lobuxracer
Tech Resource
15 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Jul 2006
Posts: 23,070
Likes: 4,739
From: Georgia
Default

They have everything to do with harmonics and resonance. It is possible to dramatically change the powerband on an engine by tuning both intake and exhaust. However, in the case of the ISx50, the resonators are primarily for sound reduction, not performance gains. There's plenty of empirical evidence from people who have removed them that they are not being used to add performance.
Reply
Old Jun 20, 2007 | 06:16 AM
  #32  
phatboyc's Avatar
phatboyc
Lead Lap
 
Joined: May 2006
Posts: 688
Likes: 0
From: Ottawa,Ontario
Default

I see. Thank you.
Reply
Old Jun 20, 2007 | 06:21 AM
  #33  
phatboyc's Avatar
phatboyc
Lead Lap
 
Joined: May 2006
Posts: 688
Likes: 0
From: Ottawa,Ontario
Default

It makes sense that at this level of machinery it is very difficult to gain performance without negatively affecting reliability and/or the environment when making modification. Otherwise the team of highly paid Lexus engineers would of already implemented it from the getgo.
Reply
Old Jun 20, 2007 | 04:02 PM
  #34  
Gernby's Avatar
Gernby
Lexus Champion
iTrader: (1)
 
Joined: Jul 2006
Posts: 3,844
Likes: 2
From: CA
Default

Originally Posted by phatboyc
It makes sense that at this level of machinery it is very difficult to gain performance without negatively affecting reliability and/or the environment when making modification. Otherwise the team of highly paid Lexus engineers would of already implemented it from the getgo.
That isn't always the case. Lexus engineers compromise performance on lots of things in favor of a soft and quiet ride (ie. not just enviroment and reliability).
Reply
Old Jun 21, 2007 | 09:03 AM
  #35  
lobuxracer's Avatar
lobuxracer
Tech Resource
15 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Jul 2006
Posts: 23,070
Likes: 4,739
From: Georgia
Default

^^ and government regulations. Any number of aftermarket parts ignore the emissions and sound requirements the OEM engineers had to meet.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RCFCoop
RC F (2015-present)
27
Apr 8, 2019 05:38 AM
Cronus1995
Performance
8
Mar 29, 2019 11:57 AM
Lexmex
RX - 1st Gen (1999-2003)
46
Nov 27, 2007 07:09 AM
nicola
Performance
9
Mar 3, 2006 04:58 AM
Nomis
SC - 1st Gen (1992-2000)
4
May 16, 2005 01:34 PM




All times are GMT -7. The time now is 01:29 AM.

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