I hope you all don't mind if I bring my post back to the original topic... How much power do you gain by disconnecting the EGR setup? I'll take a look at the tubes... How do you know if the switch over valve is bad? I have to say that the wife's 84 300D is much easier to work on than this jewel.

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Mike

'80 300D
'84 300D
'85 300D
'87 300D

You gain no power at full rack position because the EGR is closed at that time. EGR is on in the midrange, above idle and below full power.

Bypass the switchover valve. Run the line directly from the manifold to the ALDA and see if you get any improvement in the times. Don't leave it this way permanently, however.

A boost gauge is nice to have...........to see what the turbo is actually doing.

I'm waiting on a fine deal for a vac pump, my T-chain is about 1.5° at the crank so maybe 0.75° chain. Great news for mine.

I did my cat and never looked back, one less potential problem.

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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]

You're in the market for vac pump? I might be able to get a good deal on one, let me know.

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1987 300SDL 167k
1992 Volvo 740 140k
1990 Volvo 740 250k
1989 Volvo 240 269k

Anyone want to trade an old Volvo for an '87 300sdl?

Yeah for an updated Pierburg, new OR used. My guy doesn't have them in stock currently so no pricing is available from him.

Shoot me a PM if you have some scoop I can use.

__________________
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]