Exhaust Post your questions and suggestions about stock or aftermarket exhaust setups. Third Gen exhaust sound files and videos!

do away with smog pump and tubes! Ideas?

Old Jun 5, 2007 | 09:44 AM
  #1  
tpi88's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 40
Likes: 0
do away with smog pump and tubes! Ideas?

Looking to do away with all the smog pump and tubes on my 1988 gta 350 TPI.Any ideas on how and what not to do and best and easy way to do??thanks
Reply
Old Jun 5, 2007 | 11:46 AM
  #2  
hectre13's Avatar
Member
iTrader: (4)
 
Joined: May 2006
Posts: 429
Likes: 0
From: SE Michigan
Car: 1984 15th Anv. T/A
Engine: HO 5.0
Transmission: TH700r4
Axle/Gears: not sure yet!
Re: do away with smog pump and tubes! Ideas?

you can crimp your airtubes to keep them from leaking, if you dont want it to look like crap you can remove them and replace them with brass cap fittings to fill the holes in the manifold, to get rid of the pump i guess you have a couple options, you can get a smog pump delete pulley.. or you can just remove it all together and, well im not sure how it works with vbelt, but with serpentine you can get a longer belt and reroute the way its ran and it will work fine, there is a tech article that you can get to from the main page of this site on how to do the serpentine belt

im pretty sure thats about it, oh and you will wanna make sure you figure out a way to keep the cat from leaking now, you can probably just crimp or plug that pipe somehow, the pipe that goes to the pump..

but i think thats about it..
Reply
Old Jun 5, 2007 | 12:39 PM
  #3  
327_TPI_77_Maro's Avatar
Supreme Member
iTrader: (8)
 
Joined: Sep 2004
Posts: 1,896
Likes: 0
From: Charles County, Maryland
Car: 2000 BMW M5
Re: do away with smog pump and tubes! Ideas?

The cat will not last anywhere near as long without the smog pump.If you are keeping your cat I would consider keeping the smog pump.
Reply
Old Jun 5, 2007 | 02:22 PM
  #4  
tpi88's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 40
Likes: 0
Re: do away with smog pump and tubes! Ideas?

Ok thanks,but as far as any elec connections Im I going to have any probs??thanks
Reply
Old Jun 5, 2007 | 03:37 PM
  #5  
327_TPI_77_Maro's Avatar
Supreme Member
iTrader: (8)
 
Joined: Sep 2004
Posts: 1,896
Likes: 0
From: Charles County, Maryland
Car: 2000 BMW M5
Re: do away with smog pump and tubes! Ideas?

I know the ECU changes the O2 swing constants based on whether the air selector is commanded to "DIVERT", because the extra O2 in the exhaust will skew the O2 readings. I'm sure most people who hack off the air pump don't even know this is the case. You should get your chip changed to reflect the lack of air pump, to really do the job correctly. Yeah the car will still run if you don't.
Reply
Old Jun 5, 2007 | 10:01 PM
  #6  
tpi88's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 40
Likes: 0
Re: do away with smog pump and tubes! Ideas?

Ok where do I get the chip changed out?and what does it cost to do some thing like that?thanks
Reply
Old Jun 5, 2007 | 10:09 PM
  #7  
Kevin91Z's Avatar
Moderator
25 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: do away with smog pump and tubes! Ideas?

Removing, tampering, disabling, or otherwise fiddling with your car's emissions control devices on a street vehicle is a violation of FEDERAL emissions laws, regardless of your state's emissions laws. If youre caught, you could face a $2500+ fine, and jail time.

The AIR system does not hurt horsepower. The only bad thing it does is make it difficult to change your spark plugs. However, if we in CA can make 350 RWHP, get 20+ miles per gallon, and pass CA smog with everything hooked up and working, so can you.
Dont give our car hobby a bad name. Removing your emissions controls just tells stupid lawmakers they need to make the laws and fines tougher to keep you from doing it. We all suffer that way.
Reply
Old Jun 5, 2007 | 11:00 PM
  #8  
tpi88's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 40
Likes: 0
Re: do away with smog pump and tubes! Ideas?

Well,Kevin91Z thanks for the info,but Here in the GREAT state of TEXAS we like the clean look of not having all that crap on are cars.And as far as emmissions go there are plenty of others that have done this and passed emmissions test with flying colors!!!so I know they really bust yalls ***** over on the west coast (that has to suck!)but here in the GREAT state of TEXAS they dont as much.thanks anyway!and by the way I'll try my hardest not to give are hobby a bad name!!!
Reply
Old Jun 6, 2007 | 12:35 AM
  #9  
Fldopp16's Avatar
Junior Member
 
Joined: Jun 2005
Posts: 88
Likes: 0
From: Cleveland, OH
Car: 89 IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3:42
Re: do away with smog pump and tubes! Ideas?

lol.
Reply
Old Jun 22, 2007 | 04:01 AM
  #10  
F-Body Demon's Avatar
Senior Member
iTrader: (1)
 
Joined: Feb 2007
Posts: 551
Likes: 1
From: Nashville
Re: do away with smog pump and tubes! Ideas?

Originally Posted by tpi88
Well,Kevin91Z thanks for the info,but Here in the GREAT state of TEXAS we like the clean look of not having all that crap on are cars.And as far as emmissions go there are plenty of others that have done this and passed emmissions test with flying colors!!!so I know they really bust yalls ***** over on the west coast (that has to suck!)but here in the GREAT state of TEXAS they dont as much.thanks anyway!and by the way I'll try my hardest not to give are hobby a bad name!!!

:COUGH:PWNED:COUGH:

BTW im in New Mexico....you know that state that sent the Texan army running in the Civil war haha....to bad it was after you guys took Santa Fe.....:shakes head:
Reply
Old Jun 22, 2007 | 11:11 AM
  #11  
I H8 WWD's Avatar
Supreme Member
iTrader: (5)
 
Joined: Aug 2006
Posts: 2,491
Likes: 6
From: Cleveland, Ohio
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: do away with smog pump and tubes! Ideas?

There are a few guys on here running a plugged air tubed cat and it still runs fine and they pass emissions over here in Ohio. So I agree with making my engine bay cleaner....and if I can pass emissions without them then WHY THE HELL DID THEY PUT THEM ON THE CAR. LMAO. Must REALLY suck to live in California...besides all the GREEN if you know what I mean....I mean shyt Cali basically says GREEN is legal lol. But smog isnt....I like the way they think. Humboldt L8er guys.
Reply
Old Jun 22, 2007 | 12:40 PM
  #12  
tpi88's Avatar
Thread Starter
Junior Member
 
Joined: Jun 2007
Posts: 40
Likes: 0
Re: do away with smog pump and tubes! Ideas?

HAAAAAAAAA!!! PLEASE!!!! We where just looking for a short cut for the goods in Cali and Colorado!!trust me theres nothing in new mexico of worth that they wanted.BUT! yall did hold em!! so I do give you that!!!LOL!
Reply
Old Jun 22, 2007 | 03:42 PM
  #13  
I H8 WWD's Avatar
Supreme Member
iTrader: (5)
 
Joined: Aug 2006
Posts: 2,491
Likes: 6
From: Cleveland, Ohio
Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: do away with smog pump and tubes! Ideas?

Originally Posted by tpi88
HAAAAAAAAA!!! PLEASE!!!! We where just looking for a short cut for the goods in Cali and Colorado!!trust me theres nothing in new mexico of worth that they wanted.BUT! yall did hold em!! so I do give you that!!!LOL!
You guys are something else...LMAO. A small history lesson.
Reply
Old Jun 23, 2007 | 12:09 AM
  #14  
Kevin91Z's Avatar
Moderator
25 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: do away with smog pump and tubes! Ideas?

The only thing that sucks about CA is all the tree-hugging environmentalist liberal morons that live in San Fran and Los Angeles that tell the rest of us intelligent people how to live our lives.
Otherwise, I dont see any cars in this thread running 12 second ET's and getting 25 MPG and passing CA's smog check cleaner than stock. When you can do that in your daily driven thirdgen, let me know. I'll be out here trying to find a racetrack to run on so my car doesnt get crushed.
Reply
Old Jun 23, 2007 | 12:27 AM
  #15  
4playta's Avatar
Senior Member
 
Joined: Nov 2006
Posts: 455
Likes: 0
Car: 1984 Trans Am
Engine: Built chevy 350
Transmission: TCI Built 700r4
Axle/Gears: 3.73 posi 10 bolt
Re: do away with smog pump and tubes! Ideas?

Originally Posted by Kevin91Z

The AIR system does not hurt horsepower. The only bad thing it does is make it difficult to change your spark plugs.
Actually you are wrong...anything your motor must turn such as a fan, alterator, (AIR PUMP), water pump ect ect is causing parasitic horse power loss! Why do you think people run underdrive pulleys? Oh I know its because they look better that those big stock pulleys
Reply
Old Jun 23, 2007 | 12:59 AM
  #16  
92BLKL98's Avatar
Senior Member
20 Year Member
 
Joined: Apr 2001
Posts: 798
Likes: 3
From: Powder Springs, Georgia, USA
Car: 1992 Black Z28 Hardtop
Axle/Gears: 2002 10 bolt w/3:23
Re: do away with smog pump and tubes! Ideas?

I removed mine to clean up the engine bay. Did not effect emissions one bit. I did reprogram it out of the ECM. I think one good coming out of Cali. is the fact that it takes their **** attitude to make people (Americans) take a half hearted look at anything. You basically have to beat Americans in the head to make them take notice of anything. And yes I'm a born in the USA, flag waving WASP and I love my country.
Reply
Old Jun 23, 2007 | 05:26 AM
  #17  
thomas1976's Avatar
Supreme Member
 
Joined: Jun 2006
Posts: 2,199
Likes: 1
From: West-Central
Car: 91 Trans am
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23
Re: do away with smog pump and tubes! Ideas?

Most of the emission accessories on cars are to reduce nocive gasses when the engine is cold, once hot only the cat converter keeps making a big difference.

Thanks to U.S.A. coustumers and car manufacturers, TOYOTA is now the number 1 world largest car seller of the world.
Reply
Old Jun 27, 2007 | 10:44 PM
  #18  
Kevin91Z's Avatar
Moderator
25 Year Member
Liked
Loved
Community Favorite
iTrader: (1)
 
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: do away with smog pump and tubes! Ideas?

Originally Posted by 4playta
Actually you are wrong...anything your motor must turn such as a fan, alterator, (AIR PUMP), water pump ect ect is causing parasitic horse power loss! Why do you think people run underdrive pulleys? Oh I know its because they look better that those big stock pulleys
The water pump is the biggest cause of parasitic loss, not the air pump. People run underdrive pulleys to make the water pump turn slower to reduce its drag. Then you put a different alternator pulley on to keep it spinning fast to charge up the system. The air pump pulley doesnt get replaced. I have read over and over and I believe its been proven on a dyno that turning the air pump takes about 1 horsepower.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RazorN8
Tech / General Engine
4
Jan 7, 2022 11:44 AM
italiano67
Tech / General Engine
8
Dec 11, 2016 09:21 AM
toronto formula
Engine/Drivetrain/Suspension Parts for Sale
15
Nov 10, 2015 06:17 AM
Street Lethal
Engine/Drivetrain/Suspension Parts for Sale
0
Aug 12, 2015 11:33 AM
mustangman65_79
Exhaust
0
Aug 7, 2015 09:55 PM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 09:14 PM.