It is commonly believed that performance efficiency can be improved by reducing the secondary exhaust pressure from the turbine. The torque will be affected when the pipes diameter is too wide. TOMEI has invested over a year in researching all possible aspects and combinations for the best performance gain throughout the entire area. The end result was a decrease in exhaust resistance in all areas and best results is achieved with their turbo outlet (dump pipe) and front pipe as a combined set.
Outlet (Dump Pipe)
φ70 specification (φ65 inner diameter)
Manufactured by Lost Wax method
Turbine bracket
SUS304 stainless steel
The pilot by-pass has been maximized
Front Pipe
φ70 enlarged pipe
SUS304 stainless steel
Outlet (Dump Pipe) with matching inner diameter and straight fitting flange.
Outlet (Dump Pipe)
MATERIAL
Pipe Diameter (φ)
Pipe Thickness (mm)
Weight (kｇ)
Pipe
Flange
SUS304
Steel
70 (Inner Diameter 65)
2.5
1.75 (Normal 3.05)
Front Pipe
Material
Pipe Diameter (φ)
Pipe Thickness (mm)
Weight (kｇ)
Pipe
Flange
SUS304
Steel
70 (Inner Diameter 65)
2.0
(EVO IV-VI)3.8 (EVO VII-IX)3.9
NOTES
The Expreme 4G63 Outlet (Dump Pipe) with Front Pipe can only be used as a combined set. The individual pieces are not compatible with factory components.
