Keep the EGR or get rid of it?

[T45]

Just wondering what everyone else has done with the EGR system on VH's that have been swapped. My intake was completely covered in a nice black film and I was toying with the idea of just removing it. I was told it actually increases efficiency on the highway but that's not my concern. I just want a clean, powerful engine.

Ideas?

[Raxephon]

Just wondering what everyone else has done with the EGR system on VH's that have been swapped. My intake was completely covered in a nice black film and I was toying with the idea of just removing it. I was told it actually increases efficiency on the highway but that's not my concern. I just want a clean, powerful engine.

Ideas?

The following pic depicts the current location of my EGR system



Also there is/are advantages to removal if you are digging into the ecu and don't have to deal with emissions inspection.
Modified by anlasak at 3:41 AM 4/21/2007

[perana]

I was thinking about this.If the egr is removed does one need to alter the ecu? and is it robbing the vh from some power? I know on some fords once removed theres 30 odd hp freed up,but it involes a ecu chip.

[Raxephon]

If the egr is removed does one need to alter the ecu? and is it robbing the vh from some power?

Yeah, if you want more power you'll have to do some ecu tuning.

A "like new" functioning EGR system shouldn't rob the motor of any noticeable power if you are using the original ecu tune.

If you remove the EGR system you have to make the ecu think that it is still functioning properly, if you don't re-tune the ecu.Usually this just involves leaving the solenoid hooked up if you are using an ecu which doesn't support an EGT.

Going through the trouble of making sure the incoming air is as clean as possible is simply ridiculous if you are just going to dump hot dirty exhaust gasses back into the cylinders from the exhaust.

Also my motor hasn't changed more than +/-5DEG since I removed the EGR system.

[Q45tech]

Since vacuum controlled, there is zero egr on acceleration and at idle [Vacuum cut off].

The egr dirt all comes from cruising at a steady rpm on highway.........

Most air filters even oem are nowhere good enough.............97-99.9% won't cut it................20 million revolutions in 30,000 miles is a lot of dirt.300,000+ CF...................300 grams of dirt is almost a pound from the finest filtration.

http://www.donaldson.com/en/fi...4.pdf

Unfortunately Nissan engineers cannot use multiple tandem filters due to the limits they would place on HP............Oem are not allowed to sacrifice more than 1.0 HP to air filtration..

If engine longevity [low ring wear] is a real concern multiple AIR filters with a nanotube decondary filter is what you want.

Because most of gas engine EGR is made up of nonabraive carbon particles, however in diesels the particles are different and more abrasive.http://www.sae.org/technical/papers/2000-01-0925

The sulfur in the diesel fuel reacts with carbon making a more abrasive compound.

Still a egr soot filter couldn't hurt if you were trying to get 500,000 miles from engines.