Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

why no egr, maf, o2 sensor?

Thread Tools
 
Search this Thread
 
Old Aug 13, 2007 | 08:24 PM
  #1  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default why no egr, maf, o2 sensor?

i have a 99 camaro z28, and is not equiped with a maf, egr, or an 02 sensor. why would someone take these parts off? does it make a power difference?
Reply
Old Aug 13, 2007 | 09:50 PM
  #2  
WS6NIGHTMARE's Avatar
TECH Resident
iTrader: (7)
 
Joined: Oct 2006
Posts: 785
Likes: 0
From: Webster,Tx
Default

Well if it doesnt have a MAF, then you must be running on an SD tune. EGR is commonly deleted for a few different reasons, no biggie. The car comes 4 o2 sensors total. The rear 2 are usually deleted or simmed out, but if you have an SD tune in the car, it doesnt need any o2 sensors.

But a car doesnt usually have an SD tune unless its got some nice go fast parts in it, are you sure about what your saying?
Reply
Old Aug 13, 2007 | 10:45 PM
  #3  
Sideways240sx's Avatar
9 Second Club
20 Year Member
iTrader: (22)
 
Joined: Mar 2006
Posts: 1,569
Likes: 1
From: Byron, IL
Default

Power difference no. They also can get tempermental in temperature changes, people that do speed density tunes, usually have the ability to change them somewhat often. Maybe the car was heavily modified, and parts where taken off before being sold to you?
Reply
Old Aug 13, 2007 | 10:52 PM
  #4  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default

Originally Posted by WS6NIGHTMARE
Well if it doesnt have a MAF, then you must be running on an SD tune. EGR is commonly deleted for a few different reasons, no biggie. The car comes 4 o2 sensors total. The rear 2 are usually deleted or simmed out, but if you have an SD tune in the car, it doesnt need any o2 sensors.

But a car doesnt usually have an SD tune unless its got some nice go fast parts in it, are you sure about what your saying?
yes, i am 100% sure these parts are not on the car, there is NO o2 sensors at all, and no maf. why would someone do an sd tune? i do believe this car was and still is modded, but im unsure to what extent. what kind of go fast parts would someone put on to do something like this? i would def like to learn more about this.
Reply
Old Aug 13, 2007 | 10:53 PM
  #5  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default

Originally Posted by Sideways240sx
Power difference no. They also can get tempermental in temperature changes, people that do speed density tunes, usually have the ability to change them somewhat often. Maybe the car was heavily modified, and parts where taken off before being sold to you?
what kind of parts would be ran on this kind of set up?
Reply
Old Aug 13, 2007 | 10:58 PM
  #6  
98RedZone's Avatar
TECH Regular
iTrader: (1)
 
Joined: Oct 2003
Posts: 424
Likes: 0
From: Bloomington, MN
Default

I assume a cam, headers, and must have a LS6 or aftermarket intake. Do you know what the stock parts look like? Like the intake, manifolds/headers, air lid?
Reply
Old Aug 13, 2007 | 11:02 PM
  #7  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default

Originally Posted by 98RedZone
I assume a cam, headers, and must have a LS6 or aftermarket intake. Do you know what the stock parts look like? Like the intake, manifolds/headers, air lid?
yeah, it has headers with no smog provission, td's with turn downs, it has no lope so im not thinking cam, heads are stock from what i see on casting nmbers, intake looks stock but the ls6 intake looks the same so idunno, it has a 2500 stall converter, and a 12 bolt rear. slp air intake,
Reply
Old Aug 13, 2007 | 11:02 PM
  #8  
WS6NIGHTMARE's Avatar
TECH Resident
iTrader: (7)
 
Joined: Oct 2006
Posts: 785
Likes: 0
From: Webster,Tx
Default

And the cars runs fine with no problems?

Usually they end up on cars running a big H/C combo. Not just your regular bolt on combination. How is it your not exactly sure if the car is modded? Not trash talkin, just elaborate on that some. Tell us what you do know, or what your thinking it might be, post any pics of under the hood or anything that would be relevant.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 13, 2007 | 11:05 PM
  #9  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default

Originally Posted by WS6NIGHTMARE
And the cars runs fine with no problems?

Usually they end up on cars running a big H/C combo. Not just your regular bolt on combination. How is it your not exactly sure if the car is modded? Not trash talkin, just elaborate on that some. Tell us what you do know, or what your thinking it might be, post any pics of under the hood or anything that would be relevant.
the car runs GREAT, AND FAST, runs extreamly well on 100 octane it runs good on 91 nothing else
i know the car has mods, im just unsure of what has been done to the car. i am mechanically inclined, im here looking for help. the engine bay looks stock right down to the ac.
i am unsure of mods since i bought the car from some used car lot that had no idea about the car.
also no cats are being ran either
Reply
Old Aug 14, 2007 | 12:12 AM
  #10  
Brief Encounter's Avatar
On The Tree
iTrader: (6)
 
Joined: Mar 2007
Posts: 152
Likes: 0
From: Northwest Indiana (Highland)
Default

the only way to run a car with No O2's is to got Open Loop, spped density has nothing to do with it.
Just FYI.
Reply
Old Aug 14, 2007 | 04:29 AM
  #11  
RrCoX22's Avatar
TECH Addict
iTrader: (6)
 
Joined: Jun 2005
Posts: 2,210
Likes: 0
From: Ft. Bragg, NC
Default

pretty much the car has been setup to not pass smog... if you don't have an ses light and no open codes your good until smog comes around... then you'll want to put that crap back on unless you have a hookup. obviously you have a SD tune which always good for some extra poowwwhhhaaaa
Reply
Old Aug 14, 2007 | 09:59 AM
  #12  
bczee's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (12)
 
Joined: Jan 2006
Posts: 6,670
Likes: 6
From: Concord, CA
Default

If your in San Jose, Ca.. I question how or why the dealer would be able to sell you that car without the Smog equipement. It would be illegal for him to do so. You will not be able to pass the visual. It really sound like the last owner has it setup for SD tune to get more HP out of it.

If you think the car can't pass the smog test next time, You better take the car back to the dealer now and ask for a refund (or report him to the DMV or other departments). Else you will be stuck with trying to add all of the smog equipement back on (or trying to get some one to pass with with a few hundred $$$, with is illegal) every other year).

You will need the AIR pump, EGR setup, CAT's, OS2, MAF and anything else that is related and also have to pass the stupid dyno smog test. It is illegal to remove any of that in California (not saying I have not done it, but just stating the facts that you will have to deal with).

Having a fast car is great, but having to deal with the SMOG ever other year is PITA ! and can get costly.

Good luck.
Reply
Old Aug 14, 2007 | 12:44 PM
  #13  
WS6NIGHTMARE's Avatar
TECH Resident
iTrader: (7)
 
Joined: Oct 2006
Posts: 785
Likes: 0
From: Webster,Tx
Default

Originally Posted by Brief Encounter
the only way to run a car with No O2's is to got Open Loop, spped density has nothing to do with it.
Just FYI.
Reply
Old Aug 14, 2007 | 02:41 PM
  #14  
Datzneat's Avatar
TECH Enthusiast
iTrader: (4)
 
Joined: Dec 2005
Posts: 679
Likes: 1
From: Around
Default

Can you plz post a pic of your engine bay? Thanks.
Reply
Old Aug 14, 2007 | 07:21 PM
  #15  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default

ok, first of all, the dealer did not know all this stuff was missing until i pointed it out. it was going to cost him around 1600 to make it pass, thankfully i have the hookup so i dont care if the car will pass smog or not. i smoged the car and everyhting is good.
SCREW SMOG!!!!!!

also how much extra hp do you get from a SD tune?
Reply
Old Aug 14, 2007 | 08:02 PM
  #16  
WS6NIGHTMARE's Avatar
TECH Resident
iTrader: (7)
 
Joined: Oct 2006
Posts: 785
Likes: 0
From: Webster,Tx
Default

Its still a tune, so a little but not much, maybe right in/around the 10 area...?
Reply
Old Aug 14, 2007 | 08:07 PM
  #17  
Thule's Avatar
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,843
Likes: 0
From: reykjavík, iceland
Default

first your car has the sd tune, no maf 02's true duals and a 12 bolt.. i say it was heavylee modded sometime in its "life"
Reply
Old Aug 14, 2007 | 08:13 PM
  #18  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default

olny 10, yeah not really worth it, would it depend on mods inorder to get more? and here are some pics of engine compartment.





Reply
Old Aug 14, 2007 | 08:16 PM
  #19  
ls1adamls1's Avatar
Thread Starter
TECH Enthusiast
iTrader: (9)
 
Joined: May 2007
Posts: 505
Likes: 0
From: san jose, ca
Default

why would someone go through the trouble of taking all that stuff off...ie. cam, heads, all that stuff. it seems like more work than whats its worth. and i plan on getting it on a dyno when i get some money. i plane on a cam, heads, and intake in future, im shooting for 550-600 rwhp. and its going to be all motor.
Reply
Old Aug 14, 2007 | 08:17 PM
  #20  
Thule's Avatar
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,843
Likes: 0
From: reykjavík, iceland
Default

looks like an ls6 intake to me
Reply



All times are GMT -5. The time now is 06:46 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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