I'm new here and to my 1994 f-150 I6, and love both and both run great. I've done a lot of reading and learning here. Since then I have learned and observed that the smog pump and stuff have been deleted from my truck--and a decent job they did too from the looks of it. It also appears that both cats have been cut away and replaced with a Y and flowmaster. So my question is. Is my EGR doing anything? Is it necessary? Will I gain anything by taking it off. I really don't want to if it's of no improvement value.

 

If your running efi it may throw a code, if its carb'd you may have to re tune it. There is no real benefit to removing it if its functional.

 

Thank you very much for the info. I'm assuming no problems means EGR is working correctly?

 

-The EGR flow can be reduced or disabled in such a way that is does not throw a code. No code does not mean a functioning EGR.

-The existence or non-existence of the converter or air pump has very little bearing on the EGR.

-The EGR allows the ECM to advance the timing at low load to save fuel. If it is functioning it is of "improvement value" as you say.