First off, I have no emissions in my area. I am debating on even bothering with removing the smog pump off my 91 RS. I have seen posts where they say it is pointless, I honestley want to do it becauseI would like to clean up the apprearnce of my engine bay and thats really it (plus make plug changes easier) When I do this, I will add a set of headers as well and have a muffler shop change the y-pipe for me. Will it throw any codes if I remove the pump?? What will need to be removed? SUch as EGR valve, and ect..... finally, what length belt do i need to run?

I just had the shop that put in my new engine remove my smog pump. Yes it throws a SES light and its pretty straight-Forward, The removed the pump itself with all of the emissions stuff attached to the headers. Also, i still have my EGR valve on the car. When i get my car back on tuesday i can let you know what size belt is on mine if you would like.

That would be great!!

I figure I will just wait till I decide to put some headers on or drop in a new motor, no point in wasting a day.

same belt worked on mine, just re route it.... 1/4 npt plugs for the holes in the manifolds, and it doesn't take long. it even helped with mileage.

I was thinking less drag on the serp system might help, but didnt think it would make a difference you could notice, thank for the input.

lucky for you guys lol around here its like a $396 fine if you get caught without it. Whether or not your car is emmissions exempt if must have everything that came from theh factoy and they do spot checks sometimes lol it sucks!

Does NOT throw a SES light rip it out.

Replace the cat with a universal that doesnt require the pumped in air.

Ive passed emission with flying colors and two year later no SES light.

Again, no SES code for smog pump removal. I also believe that you can ditch the smog pump and retain the factory sized belt using a different routing (its been a few years).

You will not get SES light,and you will have to reroute your belt,if your original belt doesn't work try this, goodyear part#4060967 it's a belt just a few inches longer than your factory belt,that's what I have on mine.

Thanks for the input guys. I think I'm gonna swap some headers in this weekend, we'll see how energetic I'm feeling I guess.......LOL

I gutted my emissions junk. Smog pump, air tubes, plugged the manifolds, gutted the cat, and welded up the hole in the cat where the air tube goes. There is no emissions test in the county that I live in. But, the main reason I got all of it out is the fact that it was so hard to change the plugs.

It DOES NOT throw an SES code.

You have to get a longer belt and re-route it. Do a . I got the routing and belt size somewhere on this site.

What High Flow cat do you guys recommend?? I was thinking maybe Random Tech, but they were a bit pricey. If I'm going to do this, it's gonna get headers/2.5" y-pipe, cat and flowmaster catback.

I removed my pump. I needed a new belt ( 2.8l) I plugged the holes in the manifold.
I still have emissions in my area. Mine passes every time. It runs so clean it "quick passes " the im 240.

Have you looked at Magnaflow,they got some real nice and reasonable priced cats.

Just take it off and break all the guts out and put it back on.

Sorry to hack this thread but i have a question, im going to be putting some new headers on, and removing all my smog lines, and if i take the smog pump out and plug the lines, with the egr valve no longer working will the ses light be on all the time? i have no cat right now and it sometimes comes on when its damp out and if im in heavy traffic, but then will turn back off 3 mins later.. Any suggestions?

Just remember it is illegal in all 50 states to remove, or disable any stock emissions device on a street vehicle. This is a federal law, so it doesnt matter whether your state does emissions checks or not. With all the BS about global warming lately, your local politicians are going to be creating BS laws to try to fix the problem, including suddenly having you do emissions checks where there used to be none. Its already happened in some areas. Just a fair warning. By removing your cat, you've told these politicians that our cars are gross-polluters and they need new laws to keep the air clean and stop global warming.

My car makes 400+ horsepower, gets 25+ miles per gallon, and passes CA's tough smog check. You dont have to remove your cat or smog pump to make power.

Very nice for you, but thats not what this post was about...... I'm glad you make 400+hp and pass smog-checks.

But if you want to go off topic..... global warming is BS, and I just went thru one of the worst winters we have had up here in Indiana, so a little warmer weather isn't so bad!!!



















J/K.......... I am going to have a cat, just gonna remover the smog pump cause I want to clean up the engine bay and make things a bit easier when changing the plugs as stated about. Actually, that was the main reason for this post, I was changing the plugs and the dang thing kept getting in the way!

Just run a cat that doesnt need the air pumped into it. I passed Marylands smog test with flying colors.

Just for info Maryland is a dyno run with a read out of your gasses not just a cap check ;-)

http://www.thirdgen.org/serpentine

Tech article right on this site

One bit of advise as far as smog pump removal goes:

You cannot just remove the pulley and then reroute the belt, the whole smog pump has got to go, or it hits the belt. I tried that, then ran out of daylight to actually remove the smog pump.

My smog pump is still in place, with no pulley, and no belt problems.

you just got owned

no smog pump, no cat, no vapor canister, no EGR, no problem

off the subject global warming is a joke , if you look back into history you will see that there is warming and cooling trends in the earth all through history, just like the hurricanes, they come alot at once, then none for a few seasons and so forth so on just my but

.

If your doing it from a more cosmetic perspective, then by all means, go for it. I had to pull out mine because I needed room for the turbo charger that is going in soon. Had I not gone the turbo route, it would have stayed on. The weight of it isn't that substantial enough to hold you back, and any pump that pushes "air" into the mix (even if it is directed toward the exhaust) is always a good thing. But it's obviously up to you though, but don't expect much of a difference in the 1/4, trust me....

As already said, it will not throw any codes....

As for pulling the catalytic converter, there really is no reason to. The piece is not there to purposely hold you back, it's there to improve the air we breath. Plus, with the advent of the electric cutout, with the flip of a switch, there is really no need to pull the catalytic converter. A lot of guys just starting out expect a one second difference in either their 0-60, or a tenth or two in their 1/4 mile time, by ripping all of the emissions stuff out. I have never met one person, not one (with everything else remaining stock), prove this concept yet....

First of all you need to realize that Kevin91z started the whole global warming deal, NOT ME!!

Second, if you read my post I stated I was just kidding...

Lastly, if you cannot take a litte sarcasam and humor in this world, you got more porblems than global warming comments.

That all being said, i understand this is for modding our 3rd gens, which is what this post was all about. Someone else decided to take it off post, not me...... so sorry if I offended you in any way but my opinions are just that, MINE.
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I understand this. i was just wanting to remove to make the engine bay more pretty, but I hate having idiot lights on such as the SES light.

I know not to expect any gains, we do run a TT Camaro in ADRL

I agree global warming is BS, but try to tell that to a clueless politician who wants to make up new laws to make it look like he's doing something. All this talk about removing stock emissions devices just gives more fuel to these chicken-little types. I'm providing a fair warning, that's all. Some states are already considering having emissions tests where there used to be none.

I agree..... I was ONLY removing it to clean up and make some space in the engine bay. I think it looks WAY too over corwded in there and like stated above, it's such a pain in the a$$ to change the plugs.

I am going to add headers if I do this while I'm under there.



I might still just drop the 355 into the car too.

I gotta agree........

Hey watch out guys, thomas maay start to cry again

There is no reason to remove the EGR. It's not hooked up to the smog pump.

The only reason I gutted my cat was that 80% of the crap that was in it was already busted/broken into little pieces. It sounded like a can full of rocks. What little was left in it was in chunks the size of golf balls. At the time I didn't have the extra $$ to get a high flow cat put on. I know I should get a new one, but I haven't gotten around to it yet.

ok im in the same boat with F_N_JUNK. i do have a question though. if i just remove the pulley and not the pump i wouldnt have to close up any exhaust holes right (other than the ones in the manifold)

[quote=F_N_JUNK;3724148] it's such a pain in the a$$ to change the plugs.

it's a pain now, wait till you put the hedders on there...

there are check valves on the tubes that go into the manifolds, you shouldn't need to plug those. if you're going to remove the pulley you might as well remove the pump, the control valve, and the rubber hoses. that = 3 10mm bolts for the pulley; 2 t35 torx bolts for the pump, and 2 10mm bolts for the control valve assy. then just pull apart all the hoses and you've got 20lbs of junk in a box instead of in your ebgine bay.

I just took it all off tonight, took about 20 mins, and I'm leaving the AIR tubes on the manifolds, I'm going to plug the connector where the rubber hoses were attached, the black-diaphram comes off on each side and the cat pipe, and will use a certin size plug from ACE, I will post pics and more info once I get it all done

Ok I can understand where you guys are coming from with emissions laws but I have a 78 monza with a iron duke that changed the ways I felt about emissions. One day I decided to remove the emissions and all the dead wieght for race and I removed the egr, cat, A/C, and the holley 2bbl emission carb. Before removing everything the car got about 25-27 hwy and about 19city with the holley and about 45city 52 hwy with a 32/36 dgv webber. I believe if you want less emissions then make the car more fuel efficient so your burning less fuel for the same travel just makes perfect sence. I plan on removing mine and hollowing the cat on my L03 92 RS and then start tuning for mileage unless gas goes back down if it does then tune for performance.

Correct me if I'm wrong guys but wouldn't removing the smog pump on a v-belt system have more of an effect than on a serpentine? (As far as performance goes) The momentum and kinetic energy of all the other pulleys on a serpentine help out the smog pump pulley right? On a v-belt system, removing the smog pump all together would would take bigger load off the crank.

Does that sound right or am I just blowing smoke up my ***?

[quote=FYRCHKN;3724521]There is no reason to remove the EGR. It's not hooked up to the smog pump.



this is true but in my instance my car started surging real bad at low idle,Come to find out the egr valve was causing a vacuum leak because it was failing so instead of spending money on a egr valve I just blocked it off.

you do have to use a longer belt.It would be a 96.8" 6 rib belt...if you go to autozone you can get a valuecraft part # 967K6...Or you can just ask for a belt for a 1989 firebird 2.8 V-6 VIN S...its the same belt you need..

oh and mine was off for two years and never threw a code,even after I did a 350 swap into the car.

Hope this helps a little bit..heres a pic of mine without the smog.

air cleaner needs to be bigger. Looks cool though. New intake?

i dont think this thread says anything about a power diffrence. smog pump has hoses which i cover with chrome braided covers and looks cool. I post picks if ya want

haha on air cleaner..but really I had a cowl hood on it so I just got the largest air cleaner i could that would stick up into the cowl to get the direct air.....

thanks for the cool...thats a pic of the 350 tbi

I put an edelbrock performer intake with a tbi adapter plate on it..that made a real differance....oh and the egr is blocked off on it too..

So if the smog pump is removed what goes with the digital EGR valve and wiring on my 3.1 v6 automatic. Only reason i'm thinking bout it is everything is rotted out on the right side and finding replacement parts is getting harder and more expensive. Where can i get the peices that the Digital EGR Valve bolts to. This car has 243,000 miles on it and the right side manifold is almost see through. I rebuilt the engine 68,000 miles ago but everything on the right manifold is rotted. LOL I did look in local Junk yards for the tube ad most look as bad if not worse than mine.

I honestly believe it's worth it to get rid of all that emissions crap, I recently did this for a friend of mine and weighed it all. It came out to 21 lbs of metal and junk!!! Plus it makes getting to your plugs A LOT easier.

I know this is a old thread, but I also removed all the emission crap completely everything, plug the tube holes and changed my belt. My problem im having is, will the EGR valve still work, probley not huh! Well then what do I do with it just bolt it back on or block it off. If I do block it off, will those horror storys happen like burnt plugs, early detonation, running rich? Just need to know because theres no turning back now.

your egr will still work as its not part of the smog pump...

Just wondering because the egr solenoid plug runs two wires one in which is shared with every smog component. So it just made me think they might be run together, since there all apart of exhaust recirculation system. There also grouped together in the wiring diagram, maybe just because they share a wire (pr/bl) color I think.

X 100

Most follow the screwed up laws that pass in Ca. If youre dead set on taking everything off make sure and save it youll regret it.

Even out here where 75 and older are exempt were still required to have the emiisions equiptment on our cars. Think I dont wish I saved mine? Impossible to find.....

Protect our hobby..

Oh and the EGR helps your motor not hurts it.

party on Garth

does anyone know why the egr solenoid shares same wire with smog recirculation components. If smog is pulled will the egr solenoid function corectly?

Well put Kevin - we have super high concentration of these 'chicken-little' - goose stepping Eco Nazis in our sunny state of Kalifornia. Like a evil empire (Borg collective comes to mind), they take over ever so slowly, eventually taking full control over the host organism. And when the host dies (look at state economy) the parasites move on...

Dude - for all the right or wrong reasons I would keep AIR pump.

//RF