C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

problems with longtubes?

Thread Tools
 
Search this Thread
 
Old Nov 9, 2006 | 02:46 PM
  #1  
glennxx1's Avatar
glennxx1
Thread Starter
Racer
 
Joined: Apr 2003
Posts: 298
Likes: 0
From: spartanburg sc
Default problems with longtubes?

if you live in a non smog zone, no checks, if you put on a set of longtubes, with the EGR and all still on the, what type of codes will you get, and problems will you encounter? Can you still keep the cats?
Reply
Old Nov 9, 2006 | 10:19 PM
  #2  
gja's Avatar
gja
Racer
 
Joined: Jul 2006
Posts: 427
Likes: 0
From: Chicagoland IL
Default

I had a dyno tune done when I installed the long tubes with the hi flow cats.

One of the benefits of doing the dyno tune is so they can take care of any codes/problems.

I have not had any issues after installation.
Reply
Old Nov 9, 2006 | 11:29 PM
  #3  
JR_VETTE's Avatar
JR_VETTE
Race Director
20 Year Member
St. Jude 10 Year Donor
 
Joined: Apr 2001
Posts: 19,329
Likes: 15
From: Saint Augustine, FL
Mid-TN Events Coordinator
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
Default

Originally Posted by glennxx1
if you live in a non smog zone, no checks, if you put on a set of longtubes, with the EGR and all still on the, what type of codes will you get, and problems will you encounter? Can you still keep the cats?
The Corvette has no EGR.
Yes, you can still keep your cats (go with hi-flow aftermarket cats)
You might need to have a tuner disable your rear O2's. Some of us get codes because the rear O2's are further back. O2 Sims will also work. I *think* most, if not all systems now have provisions for rear O2's.

To get the real benefit of headers, you really should get the car dyno tuned.

Other than that, a properly installed header/x-pipe/cat system will give you years of trouble-free use.

You won't regret it.
Reply
Old Nov 10, 2006 | 12:01 AM
  #4  
SLPRC5's Avatar
SLPRC5
Le Mans Master
10 Year Member
 
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Default

Originally Posted by JR_VETTE
The Corvette has no EGR.
Yes, you can still keep your cats (go with hi-flow aftermarket cats)
You might need to have a tuner disable your rear O2's. Some of us get codes because the rear O2's are further back. O2 Sims will also work. I *think* most, if not all systems now have provisions for rear O2's.

To get the real benefit of headers, you really should get the car dyno tuned.

Other than that, a properly installed header/x-pipe/cat system will give you years of trouble-free use.

You won't regret it.
I have all of the above that you mentioned with the exception of a dyno tune..instead I have a street tune and the rear O2's disabled, but I have had a repeat CEL and code for the rear pass O2 sensor.
I do plan to have a dyno tune after having 1.8 rockers and 918 springs installed.
So do you think a dyno tune is the way to go to get the HP out of the LTs instead of a street tune?
SLPRC5
Reply
Old Nov 10, 2006 | 12:13 AM
  #5  
glennxx1's Avatar
glennxx1
Thread Starter
Racer
 
Joined: Apr 2003
Posts: 298
Likes: 0
From: spartanburg sc
Default

So how bad would a set of lts and a x pipe hurt my clearance? Also, if you get rid of the cats would it show any more codes? If it has same amount of codes with as without I'd rather get em out

Last edited by glennxx1; Nov 10, 2006 at 12:20 AM.
Reply
Old Nov 10, 2006 | 02:16 AM
  #6  
jdmvette's Avatar
jdmvette
Night Owl for life
Supporting Lifetime
20 Year Member
All Eyes On Me
Shutterbug
Top Answer: 5
 
Joined: Nov 2003
Posts: 24,706
Likes: 4,549
From: Bugs Bunny should'a made a left turn here
Default

Originally Posted by SleeperC5
I have a street tune and the rear O2's disabled, but I have had a repeat CEL and code for the rear pass O2 sensor.

i didnt think you'd get a code if the rear o2 sensors have been disabled?
Reply
Old Nov 10, 2006 | 03:17 AM
  #7  
SLPRC5's Avatar
SLPRC5
Le Mans Master
10 Year Member
 
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Default

Originally Posted by jdmvette
i didnt think you'd get a code if the rear o2 sensors have been disabled?
Neither did I, it has happened twice so far

Sorry I don't mean to hijack this thread...
SLPRC5

Last edited by SLPRC5; Nov 10, 2006 at 03:30 AM.
Reply
Old Nov 10, 2006 | 03:28 AM
  #8  
SLPRC5's Avatar
SLPRC5
Le Mans Master
10 Year Member
 
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Default

Originally Posted by glennxx1
So how bad would a set of lts and a x pipe hurt my clearance? Also, if you get rid of the cats would it show any more codes? If it has same amount of codes with as without I'd rather get em out
I went with the Bassani long tubes, they come ceramic coated at no extra cost. They fit perfect without any clearance problems. I hear running no cats you will get a fuel oder.. to avoid I'd would go with hi-flow cats. I was getting the CEL and code P0161 which is a bad O2 sensor passenger after cat. So I had the tuner delete the rear O2 sensors. I'm not sure it can be done with the '97 software, I had '98 software installed in my PCM.
Good luck
SLPRC5
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
Old Nov 10, 2006 | 06:38 AM
  #9  
mvvette97's Avatar
mvvette97
Melting Slicks
15 Year Member
 
Joined: May 2005
Posts: 3,394
Likes: 12
From: Leon Iowa
St. Jude Donor '06-'07-'08-'09
Default

Hey Deno, I talked to Jesse at wait4me and he said he can delete the rear O2s on the 97. He also said that he can do anything to a 97 as he could with a 98
Reply

Get notified of new replies

To problems with longtubes?





All times are GMT -4. The time now is 04:25 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE