egr/air system block off plates?

**jmatt07** · 10-07-2008, 05:18 AM

I have been seeing these all over ebay and was curious about what they do? why would you block off the egr and is it illegal?

**Spaz** · 10-07-2008, 06:41 AM

Originally Posted by jmatt07

I have been seeing these all over ebay and was curious about what they do? why would you block off the egr and is it illegal?

it depends on your state/county laws... i did it... the egr recycles exhaust fumes back in to the intake to "lower emmisions"... the reason most people block them off is because they get a new intake manifold that doesn't have EGR provisions...

**0rion** · 10-07-2008, 03:42 PM

like spaz said, unless you get an ls6 intake I wouldn't worry to much about it. People claim gains although I'd say it would be very very minimal. The air system does shed a few pounds. I did both but having been there and done it I'm not sure I'd do it for any other reason than to clean up the engine bay.