I need/want to know what these two parts are...

One is on the passanger side and the other is on the drivers side.

Thanks.

 

One on the left is your A.I.R control valve. The one on the right deals with your cruise control. 88 service manual should give you some more info. Or you can do a search through the forums.

https://www.thirdgen.org/forums/tech...ce-manual.html

 

Do I need the control valve or is it one of those things that you can remove with a better experience or no change? Thanks.

 

From the 88 service manual:

Purpose: The A.I.R. system helps reduce hydrocarbon (HC), carbon monoxide (CO), and oxides of nitrogen (NO,) exhaust emissions. It also heats up the catalytic converter quickly on engine start-up so conversion of exhaust gases can occur sooner. A Dual bed converter is used. It consists of a three way catalyst (which controls all three emissions) in series with a two way catalyst (which controls only HC and CO) both are in one housing. A pipe between the two converters allows air to be injected into the second (two way) converter to increase its efficiency to further control HC and CO.

What it does: A Control Valve
Air flows from the pump through an ECM controlled valve (called a control valve) through check valves to either the exhaust ports or the converter.

If disconnected: If no air (oxygen) flow enters the exhaust stream at the exhaust ports, HC and CO emission levels will be too high. Air flowing to the exhaust ports at all times could increase temperature of the converter. Air flowing at all times to the catalytic converter may cause converter overheating during rich operation.

The A.I.R system on my 88 Firebird was removed by the previous owner. Hope this helps.

 

So its basically the emissions system? And without it it could cause my cat. to overheat? And it doesn't add or take away power?

 

That's it in a nutshell.

 

Alright, thank you. Oh, and do you know what size of injectors are in a 1989 trans am?

 

Sorry, do not off hand. Do a search for "1989 Trans Am injectors". Also if you want to get rid of the A.I.R. system, do a search on "A.I.R.". There are some folks that have removed theirs and says it runs better.