Tomei Powered ARMS M8265 Single Scroll - Manual (Page 20)

CHANGE TO METAL TYPE
RECOMMENDED：
TOMEI METAL HEAD GASKET
The stock EJ head gasket is a metal type gasket. But during high boost applications, the higher combustion
pressures are then unsafe. There is still room for improvement to increase sealing properties. By upgrading
the head gasket, you can then stabilize surface pressures. Chose the right gasket thickness to suit your
desired compression ratio.
To work out the injector sizes you need you use this formula,
Target Horsepower x 5.9 ÷ No. of Cylinders = the cc flow amount per cylinder required. Take into account
that you will run up to 80%~90% of the injector’s capacity.
(Fuel Pres. @ 3kg/cm²)
To work out the fuel pump size you need you use this formula,
Injectors Capacity x No. of Cylinders x 0.06 = Fuel Pump flow rate required. Then consider that the fuel
STOCK ENGINE
2.2L, 2.5L Base
830cc or Higher
HEAD GASKET
Engine Tuning with a
M7760
STANDARD
STOCK ENGINE
2.2L, 2.5L Base
M7960
M8265
INJECTOR SIZE
Engine Tuning with a
M7760
650cc or Higher
M7960
M8265
2.2L, 2.5L Base
Engine Tuning with a
M7760 185L/h or Higher (Fuel Pres. @ 3kg/cm²)
M7960 RECOMMENDED：TOMEI 255L/h (Fuel Pres. @ 3kg/cm²)
STOCK ENGINE
FUEL PUMP SIZE
M8265
235L/h or Higher
(Fuel Pres. @ 3kg/cm²)
RECOMMENDED：TOMEI 255L/h
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pump should be used at 80~90% capacity when making your choice.
FUEL PRESSURE
REGULATOR
Changing the fuel pump will require you to adjust the fuel pressure with an adjustable fuel pressure
regulator to suit the new setup. You will need to set it at 3k when idling without the vacuum hose being
connected.
Please select the correct air cleaner capacity which best suits the target horsepower range.
400PS is the limit of the standard setup.
STOCK ENGINE
2.2L, 2.5L Base
2.2L, 2.5L Base
STOCK ENGINE
2.2L, 2.5L Base
STOCK ENGINE
Engine Tuning with a
M7760
RECOMMENDED ：TOMEI type-S
M7960
M8265
RECOMMENDED ：
TOMEI type-S
AIR CLEANER
Engine Tuning with a
M7760
STANDARD AIR FLOW / AIR FLOW LESS
M7960
M8265
AIR FLOW LESS
AIR FLOW
Engine Tuning with a
M7760
STANDARD AIR FLOW / AIR FLOW LESS
M7960
M8265
AIR FLOW LESS
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