Erg block and fuel consumption

[Maxhead]

Is this from experience and why if you know.
Don't know much about the CRD and EGR block.

Well I did block mine for about a week and didn't like how it was behaving(over boosting) so took it out.
Yes I could have fixed it with dowes and needle valve but why change something that works well. Also too many stories of trouble others were having with the block.

I only have the beaudesert 2 3/4 inch exhaust as an engine mod and couldn't be happier with the Patrol