I have a 89 and a 96 F250 both HDs and both 351w. I have the holes plugged in the back of the heads on them and the hoses from the smog pumps removed. What else can be taken off of there. The vac lines to the TAB and TAD selinoids are plugged. But what about the plastic things on the passenger side wheel well? I see a white vac line that goes from the EVR to the plastic thing and the green vac line that goes to the EGR valve. I want to keep the EGR operational, so should i just cap the white vac line? Or should that have constant vacuum?

 

The white line does need to have vacuum, that's where the vacuum comes from to operate the EGR valve when the EVP solenoid opens. I just ran a small line from the vac. tree on the engine to the EVP solenoid and kept the green EGR line, and all the other lines came off, plus it at least enables me to remove my coffee can vacuum reservoir so now I have room for my 2nd battery

 

That is good then. So thats all that is needed there? The white line to the EVR and the rest can be removed??

 

As far as vacuum lines yes....the TAB and TAD solenoids still need to be there and plugged in though, or else the computer will throw codes

 

im not trying to high jack but what about the green one that goes to the EGR? ive removed the ones that go into and out of the vaccum reservoir but do i need the green one cuz all it does it open and close the EGR and if theres no vaccum its closed all the time right?

 

yes, you need the green one too

 

The selinoids are still there and electronically plugged in. I put a rubber piece of vac hose on there with a screw in it to cap them off though. Everything else is now gone except what is needed to run the EGR