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TOMEI

Tomei EXPREME EXHAUST MANIFOLD EJ20 for GDB C-G/GRB A-D/GVB C-D/VAB

Tomei EXPREME EXHAUST MANIFOLD EJ20 for GDB C-G/GRB A-D/GVB C-D/VAB

SKU: 414001
Regular price £1,072.78
Regular price Sale price £1,072.78
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THE Φ42.7 - 45.0 MODEL FOR HIGH POWER TUNED CARS.

With many exhaust manifolds released so far, we've always designed our headers with Performance, Reliability and quality aspects in mind. Now we have a new model that is compatible with GDB, GRB and GVB. Introducing the highly acclaimed EJ twin scroll EXPREME header. With the very best of the TOMEI exhaust technology, this new design will deliver balanced optimised performance for power, torque and feeling.

PRODUCT INFO

APPLICATION P/N NOTES
IMPREZA JDM GD-CD STI EJ207 414001 For Twin scroll turbo equipped.
GD-EFG STI EJ207
GR/GV STI EJ207
WRX STI VAB EJ20Y

FEATURE / SPEC

TOMEI STD
MATERIAL SUS304
LAYOUT 4-2-2 4-2-2
PIPE DIAMETER PORT EXIT-COLLECTOR Φ42.7 Φ42.7
COLLECTOR-SUPPORT PIPE Φ45.0 Φ42.7
SUPPORT PIPE Φ45.0 Φ42.7
PIPE THICKNESS 2.0mm 1.5mm
WEIGHT 9.7kg 13.1kg

■ PIPE DIAMETER & BEND ANGLES

(a) MAIN PIPE :Φ42.7
The 42.7mm pipe diameter was chosen from the exhaust port to the collector to retain the stock like response.

(b) COLLECTOR : Φ45.0
A thicker than normal pipe was chosen to increase durability to handle high horsepower & high boost applications.

(c) TURBO SUPPORT PIPE : Φ45.0
Guides the exhaust gases more efficiently to maximize the Turbos performance potential. 

(d) LEFT BANK
Top priority was given to this section, to be as close to straight as possible.

(e) RIGHT BANK
A larger radial bend to the merging section was decided to minimize heat saturation to the oil sump.

(f) MERGE SECTION
The acute angles allows a smooth extraction of gas flow from each bank.

■ NON-STEPPED PORT DESIGN


■ REINFORCED FLANGE & LOST WAX COLLECTOR

KIT CONTENTS


  • Exhaust Manifold
  • Support Pipe
  • E/G – Exh – Support pipe Gasket
  • Turbin – Front Pipe Gasket
  • Support Pipe – Turbine Gasket
  • Cap Bolt
  • Flat Washer
  • Flange Nut
  • Sutud Bolt
  • Bandage
  • Bandage Band
  • Bolt Smooth Paste
  • DATA
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