LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LT1 Gurus, please take a peep here.

Thread Tools
 
Search this Thread
 
Old Jul 31, 2008 | 07:29 PM
  #1  
phantomzer0's Avatar
Thread Starter
TECH Veteran
15 Year Member
iTrader: (17)
 
Joined: Jul 2005
Posts: 4,381
Likes: 2
From: Lockport, IL
Default LT1 Gurus, please take a peep here.

Hey guys. I had my car tuned recently for my long tubes. I had the tuner remove the cats, and rear 02's. he also removed the AIR/SMOG and carbon canister codes. The car ran good for a few hours. Now it runs like total ****. It WREAKS like gas, and is physically spitting gas and water out of the exhaust.

I took it to auto-zone and scanned for codes. The codes that came up were for low resistance on the 02 sensors.

Could this be related to the tune? Or is this something that I can fix by tightening a bolt or something. Any help is appreciated.
Reply
Old Jul 31, 2008 | 08:08 PM
  #2  
NemeSS's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (127)
 
Joined: Sep 2005
Posts: 6,889
Likes: 9
From: Houston,TX
Default


i thought your black camaro had the sunoco hood?
Reply
Old Jul 31, 2008 | 08:19 PM
  #3  
Schweet97Z's Avatar
12 Second Club
iTrader: (35)
 
Joined: Jan 2006
Posts: 1,550
Likes: 0
From: Danville PA
Default

I wonder if the tuner tuned the car to rich which in returned fried the 02's? Was it dyno tuned? What did the wide band read?
Reply
Old Jul 31, 2008 | 08:24 PM
  #4  
Pro_built7's Avatar
TECH Resident
iTrader: (9)
 
Joined: Dec 2007
Posts: 883
Likes: 1
Default

did you put your longtubes in recently ? it's common for the coating to fry o2's. same thing happened to mine.
Reply
Old Jul 31, 2008 | 08:35 PM
  #5  
phantomzer0's Avatar
Thread Starter
TECH Veteran
15 Year Member
iTrader: (17)
 
Joined: Jul 2005
Posts: 4,381
Likes: 2
From: Lockport, IL
Default

Originally Posted by NemeSS

i thought your black camaro had the sunoco hood?
It did, but I sold it about a year ago.

Originally Posted by Schweet97Z
I wonder if the tuner tuned the car to rich which in returned fried the 02's? Was it dyno tuned? What did the wide band read?
It was not dyno tuned, it was mail order through madtuner.com. I had the car tuned about 2 years ago for just the performance shifting and high octane gas. Forgive me for being a total retard, but what is a wideband?

Originally Posted by Pro_built7
did you put your longtubes in recently ? it's common for the coating to fry o2's. same thing happened to mine.
I did the long tubes in October 2007. The car had some misfiring issues, so I had it taken in to get fixed. The car just got brand new 02's and extensions, literally 1 day before the car was tuned.

The weird thing is, the car ran awesome after I picked it up from the shop. It continued to run fine until I had it tuned. I only needed to get a tune for the long tubes so I would stop guzzling gas. The headers are Pacesetter Longtubes, without the EGR and AIR stuff.

I sent the tuner an email to see if I could get it re-tuned to see if there is some issue with the tuning.
Reply
Old Jul 31, 2008 | 08:45 PM
  #6  
formulajunky's Avatar
11 Second Club
 
Joined: Jun 2005
Posts: 481
Likes: 0
From: Syracuse In
Default

Wideband tells you the air fuel ratio, I would say its the tune. I agree with Schweet97z.
Reply
Old Jul 31, 2008 | 08:51 PM
  #7  
Fixxer99TA's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Mar 2004
Posts: 1,196
Likes: 0
From: Melrose, MA
Default

I would doubt it was something that madz did wrong, although theres always that chance. Where did you pickup those new O2s you were talking about?
Reply
Old Jul 31, 2008 | 08:52 PM
  #8  
phantomzer0's Avatar
Thread Starter
TECH Veteran
15 Year Member
iTrader: (17)
 
Joined: Jul 2005
Posts: 4,381
Likes: 2
From: Lockport, IL
Default

Originally Posted by Fixxer99TA
I would doubt it was something that madz did wrong, although theres always that chance. Where did you pickup those new O2s you were talking about?
Dunno. They were bought and installed by a shop.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Jul 31, 2008 | 10:24 PM
  #9  
Schweet97Z's Avatar
12 Second Club
iTrader: (35)
 
Joined: Jan 2006
Posts: 1,550
Likes: 0
From: Danville PA
Default

There are 3 things that can cause 02's to get funky. The car being to rich, to lean, or ive heard of the coating ruining them also. If they are Bosch brand 02's get them out of there and replace them with AC Delco's. Im not sayin MadZ isnt a good tuner, just simply stating there is room for error with a mail order.
Reply




All times are GMT -5. The time now is 04:12 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
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-6
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-7
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-8
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-9
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