C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1989 Smog Pump Delete Question

Thread Tools
 
Search this Thread
 
Old May 5, 2017 | 02:29 PM
  #1  
Ahnenerbe's Avatar
Ahnenerbe
Thread Starter
Racer
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2014
Posts: 275
Likes: 14
From: Gahanna, Ohio
Default 1989 Smog Pump Delete Question

Guys, I broke down and bought the 89 Vette as the owner actually fixed the surging issue and some other issues. My question is: Can I completely remove the AIR parts on this car and just get a shorter belt like I did on my 84, or do I have to install the delete kit?

Also, will removing all the smog parts throw any codes? From what limited info I found on here looks like no, the AIR is not tied to the computer. Thanks in advance.
Reply
Old May 5, 2017 | 03:14 PM
  #2  
mlm0's Avatar
mlm0
Drifting
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Dec 2012
Posts: 1,504
Likes: 73
From: Georgetown TX
Default

Removed mine on my 89, but used delete kit. No codes. If you remove egr it can throw code unless you program it out by raising temp setting in ecu
Reply
Old May 5, 2017 | 03:26 PM
  #3  
Ahnenerbe's Avatar
Ahnenerbe
Thread Starter
Racer
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2014
Posts: 275
Likes: 14
From: Gahanna, Ohio
Default

From the searched I did it appeared no code would be thrown, but I am still curious if you can just run a shorter belt instead of doing the delete which is $125. Just trying to save $$$.
Reply
Old May 5, 2017 | 04:24 PM
  #4  
zapc's Avatar
zapc
Instructor
15 Year Member
 
Joined: May 2005
Posts: 193
Likes: 8
From: West Islip NY
Default

nope you have to buy an idler pulley kit, ( air pump bypass kit) I bought the one from TPIS for my 89, i got no codes thrown, i removed EGR at the same time.


Originally Posted by Ahnenerbe
From the searched I did it appeared no code would be thrown, but I am still curious if you can just run a shorter belt instead of doing the delete which is $125. Just trying to save $$$.
Reply
Old May 5, 2017 | 09:12 PM
  #5  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 764
Default

why do you want to remove the smog pump?
Reply
Old May 5, 2017 | 09:25 PM
  #6  
HAD2HAV2's Avatar
HAD2HAV2
Melting Slicks
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2001
Posts: 2,996
Likes: 304
From: MOORESVILLE NC
Default

The reason I would remove the AIR system is, it gets in the way!
I believe one should respect the environment but for my C4 that gets driven less than 4000 miles a year. I'm not going to do that much harm since I still run a cat. Look at all the people that want to change X-pipe's and remove the back cats that are not monitored.
Reply
Old May 5, 2017 | 09:27 PM
  #7  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 764
Default

Originally Posted by HAD2HAV2
The reason I would remove the AIR system is, it gets in the way!
I believe one should respect the environment but for my C4 that gets driven less than 4000 miles a year. I'm not going to do that much harm since I still run a cat. Look at all the people that want to change X-pipe's and remove the back cats that are not monitored.
gets in the way of what?

now, this is just me, but if i'm looking at a car, and I see major component missing, like the smog pump, I'll walk away. gawd only know what other crazy stuff has been done.

Last edited by Joe C; May 5, 2017 at 09:34 PM.
Reply
Old May 5, 2017 | 09:53 PM
  #8  
HAD2HAV2's Avatar
HAD2HAV2
Melting Slicks
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2001
Posts: 2,996
Likes: 304
From: MOORESVILLE NC
Default

Disassembling the AIR system to work on the engine takes at least one hour and heaven help you taking the 2-10mm bolts that attach to the smog pump.
Not selling my 35th. Beside I can't remove anything until 2023 by state law.
But I would if I could.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

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

 Verdad Gallardo
Old May 5, 2017 | 10:22 PM
  #9  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 764
Default

Originally Posted by HAD2HAV2
Disassembling the AIR system to work on the engine takes at least one hour and heaven help you taking the 2-10mm bolts that attach to the smog pump.
Not selling my 35th. Beside I can't remove anything until 2023 by state law.
But I would if I could.
yeah, I can see where working an extra hour on your car would bum you out, and the extra 5 minutes to remove those two 10mm bolts - damn, that would cause just about anybody a nervous breakdown

-

BTW, that smog equipment is also covered by federal law, not just state, and i'm thinking federal has no timeline -

Last edited by Joe C; May 5, 2017 at 10:42 PM.
Reply
Old May 5, 2017 | 10:50 PM
  #10  
HAD2HAV2's Avatar
HAD2HAV2
Melting Slicks
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2001
Posts: 2,996
Likes: 304
From: MOORESVILLE NC
Default

This could go on all night.
I am looking forward to no state inspections. I can do what I want then. By that time I will be so old I doubt I will be driving my C4 more than 1000 miles/year. Save the wave.
Reply
Old May 5, 2017 | 11:10 PM
  #11  
HAD2HAV2's Avatar
HAD2HAV2
Melting Slicks
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2001
Posts: 2,996
Likes: 304
From: MOORESVILLE NC
Default

OP, I don't know about disconnecting the EGR system. There is an electrical connection you will have to disable. Unplug it and see if the check engine light comes on. If it does you will need more help.
Reply
Old May 5, 2017 | 11:26 PM
  #12  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 764
Default

Originally Posted by HAD2HAV2
Save the wave.
Reply
Old May 6, 2017 | 12:48 AM
  #13  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,472
Likes: 3,290
From: Hartford WI
Default

Originally Posted by Joe C
yeah, I can see where working an extra hour on your car would bum you out, and the extra 5 minutes to remove those two 10mm bolts - damn, that would cause just about anybody a nervous breakdown

-

BTW, that smog equipment is also covered by federal law, not just state, and i'm thinking federal has no timeline -
Maybe you are right but so what if you are? See many Federal inspections around you? I see State around me and I have to report to STATE emissions checks for newer cars but I haven't had to report to a FEDERAL one yet so WGAS? It is only illegal if you get caught and that is what religion is for. To cover the gap.
Reply
Old May 6, 2017 | 12:49 AM
  #14  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,472
Likes: 3,290
From: Hartford WI
Default

Originally Posted by HAD2HAV2
OP, I don't know about disconnecting the EGR system. There is an electrical connection you will have to disable. Unplug it and see if the check engine light comes on. If it does you will need more help.
I believe it will throw a code 32.
Reply
Old May 6, 2017 | 12:52 AM
  #15  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,472
Likes: 3,290
From: Hartford WI
Default

Originally Posted by Joe C
gets in the way of what?

now, this is just me, but if i'm looking at a car, and I see major component missing, like the smog pump, I'll walk away. gawd only know what other crazy stuff has been done.
IDK. Look in the engine and see. I find it easier to get to my plugs without working around the tubes for the AIR system. Is there a performance benefit? I don't see it. So it is dead weight at best and the hoses and the AIR pipe do stick up and cause more work around so why not toss it all and free up some parasitic loss?
Reply
Old May 6, 2017 | 01:22 AM
  #16  
Buick350X's Avatar
Buick350X
Instructor
 
Joined: Dec 2016
Posts: 169
Likes: 15
From: Toledo Ohio
Default

Save the whales, shoot the seals.

Reply
Old May 6, 2017 | 01:28 AM
  #17  
Ahnenerbe's Avatar
Ahnenerbe
Thread Starter
Racer
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2014
Posts: 275
Likes: 14
From: Gahanna, Ohio
Default

Iam solely wanting to remove the pump and lines just to clean up the engine and make it easier to work on. I soon wanted to remove the egr also but the computer would need flashed and that's beyond my scope.
Reply

Get notified of new replies

To 1989 Smog Pump Delete Question

Old May 6, 2017 | 04:59 AM
  #18  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 764
Default

Originally Posted by aklim
Maybe you are right but so what if you are? See many Federal inspections around you? I see State around me and I have to report to STATE emissions checks for newer cars but I haven't had to report to a FEDERAL one yet so WGAS? It is only illegal if you get caught and that is what religion is for. To cover the gap.
never said anything about federal "inspections." the feds typically don't inspect motor vehicles. the feds define emission standards to the MANUFACTURER, and I think the (federal) law states it's against the law to remove any emissions equipment installed by the manufacturer. does anyone enforce it? probably not. most state (emission) inspections, IMO, are just a means of making a buck, generating revenue - just another tax. most states do not require emissions testing at the state level, but do at the state's county level - example, stark county ohio, no, whereas right next door, summit county does. (last check) 20-bucks, every two years for a little sticker. no sticker, no (license) plates. now, you should see some of these "techs" running the test - I wouldn't let most of them check my oil.

NOW, IT'S NOT A RELIGION TO ME - I'M BY NO MEANS A TREE HUGGER, so let's get that straight, but there isn't a day goes by here where someone asks about ripping off the smog equipment. usual reasons - clean up the engine compartment - yeah, like they have some sort of show car, easier to work on the engine, right, just how much time overall do most folks spend under the hood working on their car? some of these folks are barely capable of changing their oil. how often are most people pulling plugs - once every couple years if that? and then there the performance and gas mileage gains. anyone that thinks they're going to see noticeable gains in anything is nuckin-futs. bottom line - most folks removing emissions equipment have no phucking clue what they're doing. just another bubba in there phucking up another corvette. now, it's your corvette and you can do pretty much anything you want, for me, i'm a little bit of a purest, and I see no reason to remove it. so, full circle and back to my original question, WHY?


Last edited by Joe C; May 6, 2017 at 05:37 AM.
Reply
Old May 6, 2017 | 09:59 AM
  #19  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,472
Likes: 3,290
From: Hartford WI
Default

Originally Posted by Joe C
clean up the engine compartment - yeah, like they have some sort of show car, easier to work on the engine, right, just how much time overall do most folks spend under the hood working on their car? some of these folks are barely capable of changing their oil. how often are most people pulling plugs - once every couple years if that? and then there the performance and gas mileage gains. anyone that thinks they're going to see noticeable gains in anything is nuckin-futs. bottom line - most folks removing emissions equipment have no phucking clue what they're doing. just another bubba in there phucking up another corvette. now, it's your corvette and you can do pretty much anything you want, for me, i'm a little bit of a purest, and I see no reason to remove it. so, full circle and back to my original question, WHY?
I don't show my car. I do change plugs, cap and rotor every year, flush fluids every 2. Performance difference? You won't notice but it will reduce drag. It really serves no purpose to me that I can see. My pulley is easier to work around than the pump was. The hoses have gotten in the way. So to answer your question, why am I bothering to work around something and may have to remove it and reinstall it for no performance gain? As to being a purist, well, most of my C4 isn't really original so what is one more item? If it breaks, why am I spending more money fixing something that won't yield anything to me?
Reply
Old May 6, 2017 | 04:37 PM
  #20  
Joe C's Avatar
Joe C
Race Director
25 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Aug 2000
Posts: 11,470
Likes: 764
Default

Originally Posted by aklim
I don't show my car. I do change plugs, cap and rotor every year, flush fluids every 2. Performance difference? You won't notice but it will reduce drag. It really serves no purpose to me that I can see. My pulley is easier to work around than the pump was. The hoses have gotten in the way. So to answer your question, why am I bothering to work around something and may have to remove it and reinstall it for no performance gain? As to being a purist, well, most of my C4 isn't really original so what is one more item? If it breaks, why am I spending more money fixing something that won't yield anything to me?
that's why I said, "most folks." you are obviously an exception to the rule.
Reply




All times are GMT -4. The time now is 01:53 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
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-9
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