LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Will hogan catted downpipe throw a code?

Thread Tools
 
Search this Thread
 
Old Apr 22, 2010 | 01:52 PM
  #1  
xxmerc1914xx's Avatar
Thread Starter
Staging Lane
 
Joined: May 2009
Posts: 58
Likes: 0
Default Will hogan catted downpipe throw a code?

i was looking at getting a new downpipe just to squeeze alittle more power out of the car. i need something with a cat so i was thinking about this http://www.hoganperformance.com/DP7S.htm. it said there is a possibility of throwing a code and i was wondering if anyone had this problem.

and has anyone had any problems changing the cat in terms of inspection and such? im from new york and they really kill us.. thanks
Reply
Old Apr 22, 2010 | 02:04 PM
  #2  
LS4SPEED's Avatar
TECH Enthusiast
iTrader: (3)
 
Joined: Oct 2008
Posts: 633
Likes: 1
Default

It did for me. Took a few startups but eventually the light came on.
Reply
Old Apr 22, 2010 | 02:28 PM
  #3  
gulfstreamcpt's Avatar
On The Tree
 
Joined: Oct 2006
Posts: 130
Likes: 0
Default

I've had the catted Hoan DP for almost 3 years and I have never had it throw a code ever..... Not even once....
Reply
Old Apr 22, 2010 | 02:45 PM
  #4  
xxmerc1914xx's Avatar
Thread Starter
Staging Lane
 
Joined: May 2009
Posts: 58
Likes: 0
Default

yeah i was reading reviews and it seems that its really up in the air if you will get a code or not. if it does throw one would i have to buy a diablo tuner or something like that to get rid of it?
Reply
Old Apr 22, 2010 | 03:19 PM
  #5  
williamGT's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Jul 2008
Posts: 1,467
Likes: 0
From: Yellowknife NT Canada
Default

It took 3 days for my check engine light came on.
Reply
Old Apr 22, 2010 | 03:41 PM
  #6  
higsy's Avatar
Launching!
 
Joined: Oct 2009
Posts: 291
Likes: 1
From: Toronto, Canada
Default

First time with the downpipe it took about a month before it came on. Took it back off because when the code is thrown it disabled the remote start and I needed it for winter. After headers installed I put it back on and threw the code right away. Didn't matter though because I'm going to have it dyno tuned and have the code turned off.
Reply
Old Apr 22, 2010 | 04:33 PM
  #7  
RickAKATed10's Avatar
TECH Resident
iTrader: (1)
 
Joined: Feb 2009
Posts: 785
Likes: 0
From: Highland, IN
Default

So, for those that did get the code, how do you "fix" it without getting a tune?
Reply
Old Apr 22, 2010 | 04:50 PM
  #8  
Nick_Nasty's_GXP's Avatar
TECH Enthusiast
15 Year Member
Photogenic
iTrader: (4)
 
Joined: Dec 2009
Posts: 725
Likes: 0
From: Buffalo NY
Default

Originally Posted by RickAKATed10
So, for those that did get the code, how do you "fix" it without getting a tune?
o2 simulator would work, I think there was a thread about this a while ago. I put a sim on my 02MCSS and it turned off the CEL.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-2

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-3

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-6

10 Camaros You Should Never Buy

 
story-7

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
story-8

Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0

 Brett Foote
story-9

10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever

 Verdad Gallardo
Old Apr 22, 2010 | 05:02 PM
  #9  
Tappeter's Avatar
Launching!
iTrader: (2)
 
Joined: Mar 2009
Posts: 257
Likes: 0
From: Central NY State
Default

try this
http://www.bigdaddiesgarage.com/angled-cel-fix.html
or this
http://www.o2simulator.com/
I made one like the first type with a HELP brand spark plug spacer, workes great.
Reply
Old Apr 22, 2010 | 08:29 PM
  #10  
EmersonHart13's Avatar
TECH Resident
iTrader: (3)
 
Joined: Jul 2007
Posts: 920
Likes: 0
Default

Code here.
Reply
Old Apr 23, 2010 | 12:31 AM
  #11  
JDMC5's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Feb 2009
Posts: 1,366
Likes: 0
From: Highland, MI
Default

It's probably a "catalyst low efficiency code" triggered by the rear O2, it's pretty standard...yeah.
Reply
Old Apr 23, 2010 | 04:54 AM
  #12  
07carlocrusader's Avatar
TECH Enthusiast
 
Joined: Jul 2008
Posts: 703
Likes: 0
From: Atlanta Georgia USA
Default

Originally Posted by Tappeter


TRUE!!! I just had this ordered!! I should be able to install this on the weekend! I went ahead and ordered that down pipe as well!! Sitting in the Garage waiting to be installed as we speak!! LoL!!
I just want to know any catches to make it an even easier install!! Looks like a very quick job, but, someone out there always figure out how to make the process more smooth than what it is!!
Reply
Old Apr 23, 2010 | 08:13 PM
  #13  
havelegs's Avatar
On The Tree
 
Joined: Mar 2010
Posts: 181
Likes: 0
From: Fort Lauderdale
Default

Code but too lazy to fix
Reply
Old Apr 23, 2010 | 11:45 PM
  #14  
Corny40's Avatar
TECH Resident
iTrader: (7)
 
Joined: Feb 2007
Posts: 800
Likes: 0
From: Houston
Default

One more time...

https://ls1tech.com/forums/ls4-front...ks-so-far.html

F.Y.I., The Diablo will only clear the code, but it will come right back. The only way you can remove the code with a Diablo is if you get a custom tune. Lew (06monteSS) can do one for you for about $50.
Reply




All times are GMT -5. The time now is 01:21 PM.

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