montie98

Since there is no more emissions or inspection for my car I am wondering how much can be removed from the engine bay such as the smog pump, egr, etc. This is a car that is driven only a few times a week but I don't want to remove something that will damage the car. Thanks for your help.

samsonb

Why are you wanting to remove it? Just because you can?

cv67

Unless you remove things to unclutter the compartment may as well leave them on they dont really suck any noticeable amount of power. As a youngster first thing I used to do when buying a car was toss all that stuff in the trash. Know what, none of them ever made any more power. 0

Another thing many states eventually follow others stupid smog laws...may come a day when youll need those smog parts and cant find them anymore...if you remove them hang onto them!


Supposed to have them on my 67 absolutely impossible to find period. Gave them away to someone years ago same thing. Bought the car and said its exempt Ill never need it.
Dont have to pass emissions but if caught without the controls on the car it can be impounded.

Pwnage1337

You kinda in a way gain power, because you are shedding weight. But no physical power gain

427c4vette

When I bought my 85 I removed the air pump and piping ( I kept them) but I did not notice a difference in performance. What ever you remove you should keep in case you ever move.
What I did remove that increased performance was the engine and intake/exhaust. Now that emissions are not a concern you can put in anything you want.

85vette-84vette

I removed the catilytic convertor and installed a test pipe($50 on ebay) and I removed the air pump. It feels faster, maybe because it sounds like a corvette now.

Kool88vette

Things I would do if California had no smog law:

I would lose the stock exhaust and cat. Get a good set of long tube headers and mandrel bent pipes. I would look for a better flowing intake system. I would install a cam and heads.

383vett

I live in California and have done all the above to my car. It's call a race car!

Lankhoss

Ironically enough, most of that smog crap causes you to lose gas mileage almost 100% of the time, and people have reported LOWER emissions after taking a bunch of it off (this is probably due to certain parts not working correctly, but it seems those are always the sensors that are going bad anyway).

You've gotta remember that all of these parts, along with the computer that is controlling all of it, was built before the first version of Windows was out!

markKlein

You might be sorry if you gut it and ever decide to sell it.

Bondami

Honestly its a "Good News-Bad News" kinda thing.. You can take ALL of the EM stuff off from the EGR to the Air Diverter solenoid and the Carbon can out under the nose.. dump the cat/air pump AIR tubes.. the bad news part of it is.. You will be spending money to re-route or idler pulley your serpentine belt system with out the smog pump. the car is going to throw EGR codes with The EGR blocked off (sometimes) disconnected etc etc.. so the bottom line is its going to cost you money to do it right. and other than losing some weight.. it wont make a difference on power. Now the CAT if its an old Stocker.. that I would ditch in an instant. no codes or other repercussions and you shed some weight and pick up some power If it has been replaced recently with a more modern high flow type cat.. then thats not really worth it either. so bottom line? In my opinion, If you havent reworked the exhaust yet.. Headers and a good dual exhaust all the way back.. without the cats that would be worth doing.

JrRifleCoach

Then leave it alone and enjoy.

Otherwise you'll create a new set of problems that will only make you crazy.

cv67

If we could get around smog I may actually consider picking up another C4 down the road and building the pee out of it. No EFI just something super ratty. Oh well I can dream.

pearlvett

I have ZERO codes and i have NO emmisions equipment on my car. Yes it is an 85 and you have to remember that that year was the first year that chevy really had to try and make a car pass emissions standards so it was flawed in many aspects compared to the newer corvettes. It will gain power and gas mileage if you get rid of the emissions equipment and it will not throw any codes (atleast mine didnt and the 85s can be questionable on the code throwing). Just my 10 cents though and you should do what you want.

cv67

Not sure when actual smog tests themselves started but GM was putting emiisions equiptment on cars in 67

Movnviolation

Had a 66 SS396 Chevell with smog pump on it!

montie98

I already removed the smog pump with the Breathless pulley years ago. The way I see it is I'll never even get a fraction of what I paid for this car so I'm keeping it forever so why not make it interesting. I'm thinking Intake,Heads,Cam,and a straight pipe exhaust. I think a lopey idle would be cool also. Almost an old school vibe.

JaysonC4

'' unclutter the compartment may as well leave them on they dont really suck any noticeable amount of power."...

( I am taking the motor out of my 85 corvette and I was mainly wanting to unclutter the compartment as somebody as already removed the smog pump before me. Would you know what else I could exactly remove? )

HAD2HAV2

I have to wait 4 more years in NC before I can ask your question. At 35 years old on my 88, if I ever have to remove the water pump again I know what parts I am dumping, the smog parts that get in my way.

aklim

Smog pump can go. You can cut off the AIR tubes at the manifolds and weld them shut. EGR can go if you don't mind the occasional Code 32 or can get it programmed out. The carbon canister for the fuel can go. Mine was in the right rear fender and your's might be in the engine bay. Either vent gas fumes to atmosphere or just seal it up and the cap will depressurize if it gets too high a pressure.