Generation IV External Engine LS2 | LS3 | LS7 | L92 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Cats or X-Pipe.. Alot of HPDE use.

Thread Tools
 
Search this Thread
 
Old Feb 18, 2008 | 09:10 PM
  #1  
willsctsv's Avatar
Thread Starter
Banned
 
Joined: Jun 2005
Posts: 71
Likes: 0
Default Cats or X-Pipe.. Alot of HPDE use.

I will be doing probably 2 HPDE's per month. The car is a weekend warrior. No trips to Starbucks with the Mrs. in the Z.

I have built the car for occasional street use, friday night get together or Sunday morning blast, but mostly track fun. I will be running....

Forged LS7 with 12.0-1 Compression ratio.
Ported heads with cam, springs, TI retainers, Morel Lifters, chromoly push rods. Ported T-body and Intake. LPE CAI. AR headers.
LG coilovers
Hoosiers
T1 Sways
Caravaggio seats w/ harness bar and 5 Pt harness
Stoptechs
LG Spindle ducts
Exedy Clutch/ Lightened flywheel

I have AR headers 1 7/8 with High flow cats. To make the most out of this engine do I need to go catless. I know with the X pipe it will be a little louder and I will probably smell a little gas. That aside...

How much power am I robbing from my engine, and those cats are going to be under a lot of heat and pressure..

What should I do? Even if the HP gain is small, Perhaps the engine will run better during those 20 minute HPDE...

Your thoughts... Anyone gone from cats to no cats and see any advantage at the track?
Reply
Old Feb 18, 2008 | 09:17 PM
  #2  
dshag's Avatar
On The Tree
iTrader: (1)
 
Joined: Jan 2008
Posts: 176
Likes: 0
From: Dallas,Tx
Default

You can always do electric cutouts before the cats then its your choice what you want insanely loud and more hp or quite and less hp, ive heard that you can usually pick up around 10hp without cats and a duals setup vs a catback
Reply
Old Feb 20, 2008 | 09:38 AM
  #3  
icantdrift's Avatar
Launching!
iTrader: (1)
 
Joined: Aug 2006
Posts: 241
Likes: 0
From: Buford, GA
Default

Originally Posted by willsctsv

What should I do? Even if the HP gain is small, Perhaps the engine will run better during those 20 minute HPDE...

Your thoughts... Anyone gone from cats to no cats and see any advantage at the track?
i don't have personal experience with the corvette, but in general if you remove the cats the car not only breathes a bit easier but it'll help keep the overall engine temps down. if the car is mainly for DE's and trackdays i'd remove them.
Reply




All times are GMT -5. The time now is 09:22 AM.

story-0
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-1
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-2
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-3
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-4
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-5
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-6
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-7
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE
story-8
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

The world was a better place when it was still around.

By Brett Foote | 2026-01-23 09:20:37


VIEW MORE
story-9
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

Slideshow: The 7.0-liter LS7 was designed for absolute cutting-edge performance.

By Verdad Gallardo | 2026-01-07 18:36:00


VIEW MORE