The Ultimate SR20 Exhaust Manifold
(The Engine Specialists)
Kit Contents
Exhaust Manifold
Expreme Thermo Bandage
Bolt Smooth Paste
Expreme Sticker

Our EXPREME exhaust manifold is now available for SR20 owners who want a performance upgraded from the genuine exhaust manifold. With our product you can retain the genuine setup and no special modifications are needed to fit the standard turbo. With the SR20DET the exhaust manifold was designed to be close from the exhaust port to the turbine. With the comparison test of our isometric prototype & the factory genuine manifold which also utilizes the same layout, it shows that ours has succeeded in delivering an overall improved performance in both torque and power increase in areas like in the higher RPM range in which you were not able to utilize before. With our extensive testing we have reached the conclusion that the normal design is superior as a total overall efficiency. So to develop an exhaust manifold similar with the design and setup as the factory manifold we were finally able to produce a product worthy to bear our name as a product that has the potential to deliver an overall increase in performance.
1. Acquiring preeminent turbine response
Acquiring the preeminent turbine response, by utilizing a short piping layout.
2. Excessive anti-pressure rise is prevented even at high RPMs. Ideal exhaust efficiency is obtained.
TOMEI EXPREMEs exhaust manifold for the SR20 is designed with a partition plate inside the 1st & 4th turbine side ports as the 2nd & 3rd are divided for the exhaust ports. The sequential ignition firing order of the SR20 (1-3-4-2) can cause exhaust interference. The exhaust is discharged from both left and right of the partition plate and can cause to happen where the pipes all merge together. Now TOMEI has found the best possible exhaust flow.
3. Support Bracket
The support bracket is included, so there is no need to worry about the products strength.
4. EXPREME Thermo Bandage.
Heatproof for temperatures of up to 1100℃and dissipating 90% or more of heat effectively. Helps you extract more power from your engine by reducing the oil temperature and also the engine bays temperature which can affect the air intake temperature as well.
5. Japans Vehicle Road Inspection System.
This is compatible with the (R) PS13 EAI mechanism and blow-by separator. The EXPREME Bandage is also included in the kit to comply with the Japanese street legal road regulations for the vehicle inspection.
The EAI correspondence type TOMEI turbine outlet pipe (Sold separately) can be easily installed with the use of our exhaust manifold.

Illustration of part fitted.
Compatible Models
(R)PS13/S14/S15 with SR20DET engines (With ABS)
Compatible Turbines
Genuine and aftermarket bolt on turbines
SUS304 Pipe diameter:φ42.7 Pipe thickness: 2mm
PART NO. 193086 

Exhaust Manifold
MSRP $590.00 USD

Outlet Pipe (Dump Pipe)
Our outlet pipe (dump pipe) was made larger for assured exhaust ratio improvement, the instability and deterioration of supercharging pressure decreases the response of power from the secondary exhaust pressure which can cause a substantial decrease.
EAI compatible model is now available!
193101 (EAI Compatible) EXPREME &
S14 Type
$190.00 USD
Compatible with both
Genuine Parts,
Bolt on aftermarket parts

$190.00 USD

Turbo Kit


ARMS M7960
Application/Part Number:SR20DET / 173019
MSRP $1,390.00 USD


ARMS M8270
Application/Part Number:SR20DET / 173020
MSRP $1,390.00 USD

Copyright (C) 2009 TOMEI POWERD,Inc. All Rights Reserved.