Hi I just spoke to Bryan from pcm4less, I told him that I have the 503 compcam with 1.6 rockers etc. He told me about shutting off the egr and air pump. What I want to know is why do these things? what are the benefits and drawbacks Thanks

 

AIR I would deffenetly get rid of.....cleans up the engine bay considerably. EGR is not really needed with the cam overlap you have now....heck lt4 cars didnt even have EGR. I got rid of both and easily pass emissions here in Ga on the rollers.

 

One major drawback is you'll no longer pass a visual inspection for emissions.

 

im suprised they could even see behind the motor for visuals. some1 had to point the dang thing out to me and i still had no idea what i was looking at

 

So it will not harm my engine to have the egr and the air pump off? will i get any power from it being off?

 

Doubtful that you will see any power gains, but as stated earlier, it will clean up the engine bay and you will drop a pound or two from the front of your car.

 

No power gains...cleans up the engine bay and gets rid of potential problems if either system fails.

As far as visual inspection goes.....Ive never had any problem as long as the sniffer test was good.

 

Well in Pa here we ONLY have the visual inspection on non OBD2 cars so everything has to be there.

 

Just leave it all there then and have it turned off in the program.

 

Thats what i did. I got rid of both the EGR and AIR pump. except that i left both of them there. now that im not gonna worry about ever passing a visual inspection. i think that im going to clean up the engine bay by ditching the air pump. i think ill somehow plug the hoses so it kinda looks like its all there though .. hahaha .

 

i would ditch the pump but keep the egr. ditching the egr wont do a thing. besides, its sits in the back where you can barely see it. i think it will help in passing the sniffer also. now the pump is a "must ditch" item. takes up a lotta space and you can eliminate the wires and lines coming from it. not to mention removing the water pump will be A LOT easier since the air bracket bolts on infront of it. so when(if ever) the water pump goes, no worries on replacement

 

ok probably a stupid question, but what exactly are you talken about when you say the air pump?

 

Its the gray black device under your air box and to the right of the waterpump.

 

If you get rid of your Air Pump then you will have problems with your cats, if you have them. If you dont have cats, then you are ok.

 

Ive decided to gut out the cats and put the slp headers I think I should get a better sound out the car. Oh yeah and remove the air pump