My 87 on new heads/fuel injection/gutted exhaust, no EGR, Air pump gave me almost 24 Once.. I could see 21-22 crusing down the highway like a normal person.. But I typically saw 17-19 on the highway, 15 ish around town.

Jonathan

__________________
Blue Ridge Mercedes
Jonathan Hodgman
http://www.blueridgemb.com/
Enthusiast Service, Restoration & Tuning.
Follow Us on Facebook!
Located in the Atlanta area
Specializing in all pre and post merger AMG's including Hammers and DOHC M117 engines.
Mercedes Repair Atlanta