on the Garret its a vac line to the front of the turbo, just pull and plug. Not sure where on the KKK, but similar.

It's not costing you a thing, and reduces turbo lag -- I'd personally leave it alone if the system holds vacuum.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!