Top Definition
A 5.4L Mercedes Benz supercharged motor ("55" Kompressor) that is suffering from the dreaded I/C pump failure. Common on early production years, this allows BMW M's to thrash their Mercedes rivals, causing depression and despair among fellow 55 Kompressor car owners.
I was driving that Stage -1 E55, that's why I just lost to that stock BMW M.
by J2OOI August 21, 2007

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