What does a.i.r. and egr stand for? Do i need to get headers with or without them? please help

 

What you can delete depends on what emissions inspections you have, if any.

AIR uses an electric pump to put clean air into the exhaust manifolds. The air burns the excess hydrocarbons in the exhaust that result from the very rich cold start A/F mixture. The heat of the burning HC's is used to help the catalytic converter heat up faster, since it doesn't work when it is cold. AIR does not hurt performance, since it only works for 2 or 3 minutes on startup. You can remove the system without setting any codes (OBD-I only). Most emissions test don't test cold start conditions, so it won't cause a problem with a tailpipe test. If you physically remove the system, it may not pass a visual inspection.

EGR recycles exhaust gas into the intake manifold. The inert exhaust gas mixes with the incoming air and fuel, to reduce combustion chamber tempertatures. This is done to reduce the formation on the pollutant "oxides of nitrogen" (NOx). Removing the system may cause the engine to fail emissions testing due to excess NOx. It may also cause codes that turn on the SES light. The codes would have to be programmed out of the computer (PCM). Again, the system does not hurt performance. It does not operate at wide open throttle (WOT), or above 3,500RPM. One possible benefit of EGR is the reduction of the chances of knock (detonation) when lugging the engine at low RPM in the worng gear. But that is a minor consideration.

 

the main benefit to removing them is to reduce under-hood clutter, and maybe a little weight, but like stated it will be difficult to pass inspections in most areas