I am in the process of removing the EGR from my SDL. It has been disabled for a while but I've decided that the useless chunk of metal is probably just adding weight and adversely affecting my fuel economy (Just put that in for any EPA Inspectors that might be reading ) so its coming off.

I have read that the two EGR Vacuum solenoids/relays/switches can cause leaks so is there any harm in bypassing them altogether ?
Do they perform any other function other than controlling the EGR valve.

Thanks

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1991 M-B 560SEL Arctic White/Grey 99,000 Miles
1987 M-B 300SDL Ivory/Palomino 229,000 Miles (sold but never forgotten)
2006 Volvo XC70 Blue/Beige
1999 Porsche Boxster Arena Red/Savanna Beige
1986 Porsche 928S Goldweiss/Brown