Only thing I do not like is using vacuum plugs on the throttle body, they can become hard/brittle pretty quick. I just cut off those brass tits, counter sink the holes, and fill with epoxy. That way I know I will not have to deal with a vacuum leak there again.

Hell, I think there were five hoses coming off that on the 560. Insane really. Just removing the AIR injection crap drastically cleans up the engine. I have not made the EGR block off plate yet, but I plan to do just as 'DAVECAD' mentioned. When I had the intake off my 280,000 mile 300SEL it was FULL of EGR grossness and the fitting from the EGR pipe to the intake plenum was blocked by EGR crap... the system was not functioning and the car passed emissions without it. I fully removed it all when I did the top end here recently and the car passed the smog test big time.

I left parts 79 on the intake manifold, I just removed the red top so now they just appear to be brass plugs. The rest of the nonsense on the inner fender/splash guard area can just be disconnected and removed. I would venture to say there is nearly 20' of tubing once all removed. It is shocking.



All you really need is the vacuum reference to the EZL module.

I cannot wait to install my regular Euro true dual manifolds and eliminate that precat right by the firewall. I am starting to wonder if that precat is a main contributor to the head gasket issues the M116/7 face on that pass side.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]