Originally Posted by Tyler980
I plan on removing the exhaust piece that goes from cat to stock air cleaner.. but there is a vac line from that to where the 4x4 vac lines are.. can I just plug that port?
I believe that your two way cat had that hose which is part of you EGR system. If you remove the cat (why?) the EGR becomes useless. BUT if you still have the ECU controlling things it may mess things up since the ECU controls the EGR solenoid, etc.
If this jeep engine has been Nuttered (Google John Nutter) then removing the EGR pump/solenoid should have no effect on the engine performance.