No A.I.R. No EGR

[silversurfer74]

Howdy All!
Someone tell me the good the bad and the ugly of having a blocked (or disconected) EGR and no AIR pump. Performance gains? Expensive parts go BOOM? Better fuel economy? Worse fuel economy?(like it matters!)
Silversurfer
When the world throws you a lemon, throw it right back at the world.

 

[81 Corvette]

Not much. There could be a slight performance increase from not turning the air pump and not recycling gas's thru the carb, but emissions will increase slightly. Not sure about fuel consumption.

Nothing will go boom. My air pump and emssions have been off for over a year and for many years before the smog laws, cars didn't have all the smog stuff on em.

 

[jdp6000]

If you don't have emissions testing go ahead and take it off. If you do have emissions testing you will fail without that stuff.

If you choose to remove it make sure you keep it all it adds value to the car.

Jim

 

[zackm58941]

Hi, you will lose some fuel mileage by removing the EGR. Besides its main purpose of reducing NOx emmisions(which are produced above 2500*F), the lack of exhaust gases in the combustion chamber will have to be replaced by more A/F. I would personally leave it on because it also helps reduce combustion chamber temperatures by introducing exhaust gases which are sustanionally lower than combustion temperatures. Its all what you want to do with your car. Thats my 2 cents.

 

[photovette]

Keep the EGR--it lowers combustion temperature thereby reducing the tendency for spark knock to occur--therefore you can bump up the timing a tad and go faster.

The A.I.R. is crapola--however, save the pieces, somebody eventually is gonna put it back in.

Thank goodness my '77 was one of the few C3's not originally equipped with A.I.R. I would have been torn between yanking it and keeping the car original.

 

[silversurfer74]

Thank you all for taking the time to answer my question. EGR stays, AIR was gone when I got the car.