Is it a good idea to throw away the EGR system on my Euro 85 500 sel?
We only get tested for emissions at idle, and the CO has to be less than 4%, so I dont think the EGR will effect that.
I think that anything to simplify the intake and vacuum system has to be a good thing right?

Also, I've taken my heads off and notice that there are small passageways between the combustion chamber and inlet manifold. What is the purpose of this?

Edit:
I should have mentioned that I run on LPG (propane) about 98% of the time.

__________________
Ben

'85 500 SEL
'85 928S2
'88 560 SEC
'90 750i

EGR actually helps reduce combustion temperatures...that reduces NOx..don't know much about UK pollution testing

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From what i've read, the EGR is only operational at part throttle. Our emissions test is only at idle on a car of this age, and registers CO and HC. I dont think NOx comes into it.
I've heard that removing this old type system can increase performance slightly, because of its crude nature. I know that a modern EGR system can increase engine efficiency.

__________________
Ben

'85 500 SEL
'85 928S2
'88 560 SEC
'90 750i