HERE WE GO. I'VE GOT A 01 WS6 , I PUT THE LS1 SPEED HI FLO RAILS AND BILLET REG ON THE CAR AND GETING A STRONG FUEL SMELL UNDER THE HOOD AND ABOUT 7MPG IN 6TH GEAR AT 2000-2500 ON HWY. THERES BIG PROBLEM 1 #2 PULL THE INTAKE MANIFOLD OFF AND SIT IT ON THE FLOOR AND OIL STARTS RUNNING OUT OF THE PORTS AND CYL 5,6,7 & 8 PORT WALLS ARE COVERED WITH OIL.I ADD 1 QT OIL PER 500 MILES. ANY HELP WOULD APP VERY MUCH

STATS
61000 MILES
T56
MOBILE 1 SYN W/ 1 QT LUCUS SYN
93 OCT + 3 GAL THINK 104 OR 114 OCT PER TANK
NEVER TOUCH INTERNALS AT ALL