I saw this post by a reputable member but held back on "bumping" it because people get prissy if the thread is old and revived.

http://forums.maxima.org/4th-generat...ming-soon.html

Post #12



He says its similar to 5th gens?

 

Yes, they are different. 99s use a stepper motor to control EGR flow.

 

whats does that mean in terms of...remove-ability? Whats a stepper motor?

thanks


edit: I have 99 Fed-spec btw.

 

Instead of using vacuum and a diaphragm to control flow, it's electronically controlled via a stepper motor which is just a motor that has the ability to move in small increments (steps) which offers much more precise EGR flow.

It can be removed but you will have an EGR code and your car will go into fail safe mode. I have experienced this and it's in the 99 FSM, and you will not be able to rev past 3000 rpm.

If you want to remove the EGR system, just have the section with the motor zip tied somewhere in the engine bay and connect the harness and you wont have any problems.

 

Indeed, that's the best way.

Think of it sort of like the main IACV motor, adjusts in and out to regulate flow.