BUSCHUR RACING

EVO 8/9 DOUBLE-PUMPER

Buschur Racing has always taken a no-nonsense, no-frills approach to performance. The extremely affordable EVO 8/9 “Double-Pumper” solution is no exception. Combining a pair of modified Walbro GSS340 pumps in a modified stock hanger gets the job done. A modified hat with 3/8-inch barbed fittings allows for twin -6AN lines to feed the fuel rail. Alternatively, a step-up Y-fitting can be used to combine the twin -6AN lines into a single -8AN line. On the flow bench, the system performed very well. The modified pumps showed some of the least flow loss as operating pressures were increased. Feeding fuel to a 750+whp 4G63 running 35psi of boost pressure should be no problem for this setup. A core exchange is required.

SPECS

MANUFACTURER:  Buschur Racing
PART NUMBER:  EVO-4009
DESCRIPTION:  Double Pumper for EVO 8-9
VEHICLE APPLICATIONS: 2003-2006 Mitsubishi Evolution VIII and IX

NUMBER OF FUEL PUMPS: 2
FUEL PUMP MANUFACTURER: Walbro
FUEL PUMP PART NUMBER: GSS340 28912-1

FUEL PUMP INLET TYPE: Snap Fit Stock
FUEL PUMP OUTLET TYPE: 5/16″ / 8mm
FUEL HAT OUTLET #1: 3/8″ / 9.5mm
FUEL HAT OUTLET #2: 3/8″ / 9.5mm (-6AN Optional)
FUEL HAT RETURN #1: 1/4″ / 6.4mm
E85 Compatible (Y/N): YES

MSRP: $515.00

FUEL CURVE SLOPE -29lph/10psi @ 12.5V | -37lph/10psi @ 14.0V