Hi,
My '91 EGR valve is located on the exhaust manifold, it's round with a couple of vacuum lines on it. It's probably in the same location, but I could be wrong.
Randal

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1991 190E 2.3 SOLD
1972 911t 2.4 owned since 4/80 300,000+ miles SOLD
1999 C43
Merlin XLM, All Ti, 17.5lbs.