Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > TPI
Register Forgot Password?

TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by South Bay Fuel Injectors
Click Here

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 09-28-2003, 10:03 AM   #1
Junior Member
 
Join Date: Sep 2003
Location: southampton,u.k
Posts: 10

Classifieds Rating: (0)
Hp Gain on removing smog Equipment?

Can any one tell me if there is a worthwhile Hp increase by removing all smog equipment?
__________________
Andy(GTA)
(GTA)master is offline vBGarage Page   Reply With Quote
Old 09-28-2003, 11:01 AM   #2
Junior Member
 
Join Date: Sep 2003
Location: southampton,u.k
Posts: 10

Classifieds Rating: (0)
Any info would be appreciated.
__________________
Andy(GTA)
(GTA)master is offline vBGarage Page   Reply With Quote
Old 09-28-2003, 11:50 AM   #3
Supreme Member
 
Join Date: Oct 2002
Location: Salem, NH
Posts: 1,851
Car: 1999 Z28
Engine: LS1
Transmission: 6 Speed
Axle/Gears: 9" 4.11 Truetrac

Classifieds Rating: (1)

no hp gain, just makes the engine bay less cluttered and easier on the eyes.
__________________
1989 Ultra Blue Metallic Hardtop IROC - All Motor Stick Car Build
SLP IROC-Z is offline vBGarage Page   Reply With Quote
Old 09-28-2003, 04:55 PM   #4
Senior Member
 
Join Date: Jul 2002
Location: Naperville, Illinois
Posts: 567

Classifieds Rating: (0)
Send a message via AIM to Thirdgen86TA
It would shed a few pounds off also.
__________________
Thirdgen86TA is offline vBGarage Page   Reply With Quote
Old 09-29-2003, 07:07 AM   #5
Junior Member
 
Join Date: Sep 2003
Location: southampton,u.k
Posts: 10

Classifieds Rating: (0)
cool
__________________
Andy(GTA)
(GTA)master is offline vBGarage Page   Reply With Quote
Old 09-29-2003, 01:37 PM   #6
Supreme Member
 
Join Date: Nov 2001
Location: Ocean, NJ
Posts: 4,455
Car: Check The Sig

Classifieds Rating: (0)

Send a message via AIM to bigals87z28
depending on how much smog you are removing. If ALL of it is going, you could gain a few here and there. Losing the air pump could free up some poundage and lessen the parrasidic loss due to drag of the v/serp belt. Cat removal would be a good way to lessen backpressue and also bring more sound out of your car. Just make sure you re-tune your car due to the change in smog equipment. Removing EGR will cause you to get SES codes and also could lead into running rich.
__________________
[size="1"]87 Camaro Z28 LS1/4L60E Swap with a lot of other stuff
www.GMInsidenews.com
www.NJFBOA.org
bigals87z28 is offline vBGarage Page   Reply With Quote
Old 09-29-2003, 02:00 PM   #7
Senior Member
 
Join Date: Jun 2001
Location: Charleston, SC
Posts: 9,550
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6

Classifieds Rating: (0)

Quote:
Originally posted by bigals87z28
depending on how much smog you are removing. If ALL of it is going, you could gain a few here and there. Losing the air pump could free up some poundage and lessen the parrasidic loss due to drag of the v/serp belt. Cat removal would be a good way to lessen backpressue and also bring more sound out of your car. Just make sure you re-tune your car due to the change in smog equipment. Removing EGR will cause you to get SES codes and also could lead into running rich.

the EGR isnt a smog componet and actually gives your better gas miliage when you're crusing down the hwy.... taking it off isnt a great idea.. ours are computer controled anyway, so they arnt on when you're flooring it for power... taking it off will only effect your gas miliage..


unless you go thru the work of setting up the car for no EGR... but theres no point in that since it isnt costing you anything.... unless you swap manifolds or somthing...
MrDude_1 is offline vBGarage Page   Reply With Quote
Old 09-30-2003, 12:29 PM   #8
Senior Member
 
Join Date: Aug 2001
Location: Memphis, Tn
Posts: 972
Car: 92' RS
Engine: 357
Transmission: TH350
Axle/Gears: 4.10

Classifieds Rating: (0)
Send a message via Yahoo to 91GTABird
Removing the egr does keep intake temps down a little though. But your not gonna go 14.5 to a 14.4 by losing it.
91GTABird is offline vBGarage Page   Reply With Quote
Old 09-30-2003, 02:35 PM   #9
Supreme Member
 
Join Date: Nov 2001
Location: Ocean, NJ
Posts: 4,455
Car: Check The Sig

Classifieds Rating: (0)

Send a message via AIM to bigals87z28
Quote:
Originally posted by MrDude_1
the EGR isnt a smog componet and actually gives your better gas miliage when you're crusing down the hwy.... taking it off isnt a great idea.. ours are computer controled anyway, so they arnt on when you're flooring it for power... taking it off will only effect your gas miliage..


unless you go thru the work of setting up the car for no EGR... but theres no point in that since it isnt costing you anything.... unless you swap manifolds or somthing...
thats what I was getting to when i said running rich . And yes, Exhaust Gas Recirculation is a smog equipment.
bigals87z28 is offline vBGarage Page   Reply With Quote
Old 10-05-2003, 03:48 PM   #10
Member
 
Join Date: May 2003
Location: A STATE WITH NO EMMISIONS LAWS!!!!!
Posts: 117
Car: 1986 Z28
Engine: LG4 305ci
Transmission: T5

Classifieds Rating: (0)
I removed my crap (I live in michigan). It makes it much easier to work around on the engine and not so much stuff sittin around in there. I have a pretty empty engine bay now that ive taken all of it out, and having an LG4 helps out too!
Attached Images
File Type: jpg smog pump delete.jpg (74.2 KB, 561 views)
Eric_7810 is offline vBGarage Page   Reply With Quote
Old 10-05-2003, 03:53 PM   #11
Member
 
Join Date: May 2003
Location: A STATE WITH NO EMMISIONS LAWS!!!!!
Posts: 117
Car: 1986 Z28
Engine: LG4 305ci
Transmission: T5

Classifieds Rating: (0)
When i removed mine it didnt effect performance noticeably at all, but sorry, I just realized I was in TPI board, but the equipment is similar I'm sure. Does anyone know how to get rid of the tube sticking out of my manifold now? it is ugly and everyone asks why it is open. I tried to take off the nut holding it on and damn they are tight.
Eric_7810 is offline vBGarage Page   Reply With Quote
Old 10-05-2003, 03:56 PM   #12
TGO Supporter
 
Join Date: Nov 2001
Location: Maryland; USA
Posts: 11,634

Classifieds Rating: (0)

best thing i did to my engine bay, was get headers with no air tubes, remove a.c, remove air pump and lines.

Click the image to open in full size.
__________________
Pontiac Firebird's: 91 Formula 350, 01 Trans Am WS6, Suzuki's: 09 SX4 Crossover, GSX-R's: 06 600 & 07 1K.
F-Quick Garage & Car Domain
MdFormula350 is offline vBGarage Page   Reply With Quote
Old 10-05-2003, 08:41 PM   #13
Supreme Member
 
Join Date: Feb 2002
Location: miami, florida
Posts: 1,837

Classifieds Rating: (0)

Send a message via AIM to vwdave Send a message via Yahoo to vwdave
My car felt like it had more response.

Got no proof though.
vwdave is offline vBGarage Page   Reply With Quote
Old 10-06-2003, 01:39 PM   #14
Supreme Member
 
MNformula350's Avatar
 
Join Date: Oct 1999
Location: Minnesota
Posts: 1,750
Car: 1990 Formula
Engine: 350 TPI
Transmission: Auto
Axle/Gears: 3:73 Posi

Classifieds Rating: (2)

when i removed all my a/c and smog equipment i noticed a 50-60 more miles out of a tank of gas.

plus it's a lot less clutter in the engine bay.

http://www.fbody.com/members/MNFormu...mulaengine.jpg

copy and paste link for pic
__________________
MNformula350 on Fquick <-Click

<<<<<< 1990 Pontiac Firebird Formula 350 >>>>>>
MNformula350 is offline vBGarage Page   Reply With Quote
Old 10-06-2003, 01:57 PM   #15
Senior Member
 
Join Date: Sep 2002
Location: Nebraska
Posts: 821
Car: '89 Formula
Engine: HSR/355cid
Transmission: Modded 700R4
Axle/Gears: 9 bolt/3.45:1

Classifieds Rating: (0)
Quote:
Losing the air pump could free up some poundage and lessen the parrasidic loss due to drag of the v/serp belt.
Not likely. Under WOT, the AIR diverter valve switches to 'dump' anyway, so there is virtually zero drag due to the pump.
The main reason not to remove the EGR is because the ECM is tuned to work with it, if you are willing to get a custom PROM to program it out, theres no reason to keep it. If youre using the stock programming, keep the EGR.
__________________
'89 Formula WS6
355/Toplines/HSR, '730, stall, gears, etc...
formularpm is offline vBGarage Page   Reply With Quote
Old 10-10-2003, 01:20 AM   #16
Member
 
89TA383M5's Avatar
 
Join Date: Aug 2003
Location: Illinois
Posts: 126
Car: 89 TA
Engine: 413 TPI
Transmission: TKO 600
Axle/Gears: 3.42

Classifieds Rating: (0)
I took off the cat first. Then when I got headers I dropped the Air pump. When I drop in my new motor over the weekend I'll take off the a/c since I got the 1LE pully for it. I had tuning issues but when I dropped the emmisions stuff I reset the computer by unhooking the battery then the car started to really pick up so I think It made a big diffence for me. But also I think the bearings in the pump were shot too so...
89TA383M5 is offline vBGarage Page   Reply With Quote
Old 10-10-2003, 02:57 AM   #17
Senior Member
 
Join Date: Feb 2001
Location: Keller, TX
Posts: 451
Car: 06 Toyota Tundra SR5

Classifieds Rating: (0)
Send a message via ICQ to BuddyLeeX Send a message via AIM to BuddyLeeX
when i first got it i was curious as to what it was, and i found out that it just pumped air into my exhaust manifolds , is this really better for air wtf?, so i decided just to remove it. At the time I was getting weird mixture, and i was backfiring when i let off the gas, so I removed the whole smog pump and lines, and it stopped backfiring.
BuddyLeeX is offline vBGarage Page   Reply With Quote
Old 10-10-2003, 04:59 AM   #18
Junior Member
 
Join Date: May 2003
Posts: 59

Classifieds Rating: (0)
Quote:
Originally posted by Dave84Bird
when i removed all my a/c and smog equipment i noticed a 50-60 more miles out of a tank of gas.

plus it's a lot less clutter in the engine bay.

http://www.fbody.com/members/MNFormu...mulaengine.jpg

copy and paste link for pic

WOW.

That is a gain and a half. Horsepower be damned. I'd rather have the 50-60 miles to a tank better milage...
MinionII is offline vBGarage Page   Reply With Quote
Old 03-10-2004, 01:11 AM   #19
Member
 
Join Date: Jun 2003
Location: IN THE LBC
Posts: 200
Car: 1988 IROC CONVERTIBLE
Engine: 305 TPI PAXTON SUPERCHARGER & NOS
Transmission: T5

Classifieds Rating: (0)

Send a message via AIM to IrocZonNos
Could you post pics and supply details on how and what parts to remove when eliminating the AIR pump.

Thanks in advance.
IrocZonNos is offline vBGarage Page   Reply With Quote
Old 03-11-2004, 03:17 PM   #20
Senior Member
 
Join Date: Jun 2002
Location: Michigan
Posts: 630
Car: 83 Camaro
Engine: 350
Transmission: th350

Classifieds Rating: (0)

Send a message via AIM to BeNnYBooPy
its in one of the tech articles
BeNnYBooPy is offline vBGarage Page   Reply With Quote
Old 03-13-2004, 04:04 AM   #21
Supreme Member
 
Join Date: Nov 2001
Location: Ocean, NJ
Posts: 4,455
Car: Check The Sig

Classifieds Rating: (0)

Send a message via AIM to bigals87z28
Quote:
Originally posted by formularpm
Not likely. Under WOT, the AIR diverter valve switches to 'dump' anyway, so there is virtually zero drag due to the pump.
But for how long are you at WOT?
bigals87z28 is offline vBGarage Page   Reply With Quote
Old 03-13-2004, 05:50 PM   #22
Member
 
Join Date: May 2003
Location: Cedar Grove, Wisconsin
Posts: 110
Car: 91' Firebird Formula WS6
Engine: 305 TPI
Transmission: TH700R4

Classifieds Rating: (0)
a good way to keep it legal and free up some hp is get a exhaust cutoff from summit or jegs, and weld that just after the headers. then you can flip a switch and run open exhaust, switch it again and you run it through the exhaust system. its a good way to keep it legal, avoid troble with cops and at the same time free up some backpressure when you need the extra hp and the growl. give it a try!
FastBack is offline vBGarage Page   Reply With Quote
Old 03-13-2004, 06:02 PM   #23
Senior Member
 
Join Date: Sep 2002
Location: Nebraska
Posts: 821
Car: '89 Formula
Engine: HSR/355cid
Transmission: Modded 700R4
Axle/Gears: 9 bolt/3.45:1

Classifieds Rating: (0)
Quote:
But for how long are you at WOT?
14.6 seconds with the old engine. Hopefully 12.5 seconds with the new one. I dont think anyone uses part throttle when racing. Anyway, the point of my reply was not to have any delusions of gaining any real power by removing the pump. Mine had a noisy bearing, that was reason enough for me.
formularpm is offline vBGarage Page   Reply With Quote
Old 03-13-2004, 06:14 PM   #24
Supreme Member
 
flrtin1's Avatar
 
Join Date: Jan 2004
Location: Twisted Edge Custom Powder Coating Bartonville Ill.
Posts: 1,193
Car: Z28
Engine: S/B
Transmission: 5 Speed

Classifieds Rating: (0)

Quote:
Originally posted by FastBack
a good way to keep it legal and free up some hp is get a exhaust cutoff from summit or jegs, and weld that just after the headers. then you can flip a switch and run open exhaust, switch it again and you run it through the exhaust system. its a good way to keep it legal, avoid troble with cops and at the same time free up some backpressure when you need the extra hp and the growl. give it a try!
That is not true, in Illinois it is illegal to just have cutouts on your car here is a quote from the vehicle code:

Quote:
(625 ILCS 5/12‑602) (from Ch. 95 1/2, par. 12‑602)
Sec. 12‑602. Mufflers, prevention of noise.
Every motor vehicle driven or operated upon the highways of this State shall at all times be equipped with an adequate muffler or exhaust system in constant operation and properly maintained to prevent any excessive or unusual noise. No such muffler or exhaust system shall be equipped with a cutout, bypass or similar device. No person shall modify the exhaust system of a motor vehicle in a manner which will amplify or increase the noise of such vehicle above that emitted by the muffler originally installed on the vehicle, and such original muffler shall comply with all the requirements of this Section.
flrtin1 is offline vBGarage Page   Reply With Quote
Old 03-13-2004, 07:05 PM   #25
Senior Member
 
smithtc's Avatar
 
Join Date: Nov 2000
Location: Alabama
Posts: 689
Car: 89 GTA Trans Am

Classifieds Rating: (5)

I saw no increase in mph or decrease in elapsed times on an 1/8th mile track when I removed my smog equipment, pump, piping, etc.

It did; however, cut the amount of time in half that it takes to change spark plugs, wires, sensors, etc.
__________________
'89 GTA half of a 305/T-5/3.45
'69 Camaro X55/M20/3.31

Don't wait for conditions to be perfect to begin. Beginning makes the conditions perfect.
smithtc is offline vBGarage Page   Reply With Quote
Old 03-13-2004, 07:05 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > TPI

Tags
305, 350, ac, bay, custom, egr, engine, equipment, gain, gains, give, hp, kind, manufactures, removing, smog, tpi, ws6
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 12:24 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details