GDB-C/D JDM METAL CATALYZER

Improved efficiency & cleaner air!
A must have upgrade for all GDB SUBARU IMPREZA.

Expreme metal catalyzer for the WRX GDB is now available. When used in conjunction with the Expreme exhaust manifold will help greatly enhance your performance gain. Expremes total exhaust setup is highly recommended.

APPLICATION	GDB - C / D
YEAR	Nov 2002～May 2004
NOTES	TWIN Throttle T/C


Metal Catalizer Only	Part No.：193095
MSRP $1,470.00 USD

I

Overview

EXPREME Metal Catalizer

Genuine Parts

The 3 stages of pipe diameter of 75-70-65 were decided for best power and torque combination. The result was the highest efficiency, quality and the pipe angles for best exhaust flow.

Genuine has φ60 pipe for the whole area. Inner diameter is small and has sharp angle bends which causes bad exhaust efficiency.

T/C Flange

EXPREME

Genuine Part

A divider plate was made between the main port & actuator conversion. Higher efficiency exhaust flow.

←	Without the divider plate there is exhaust interference.

Certification

Emissions certificate is also included for street legal requirements in Japan. (NOTE. The certification is for Japan ONLY)

Metal Catalyst

Superb Durability/ Minimal Pressure Loss/ Cleaner Emissions

Features
	The foil thickness is only 0.1mm, so minimal exhaust pressure loss for higher output.
	Especially treated for strengthening
	Smaller heat capacity for faster exhaust flow.
	Made from the high grade material for lasting durability.
	Accurate welding with the right heat conditions was used to maintain the catalyst original efficiency.

←	Complying with 150cpsi standards for superiority in exhaust efficiency and purification efficiency.

Exit Side Flange

EXPREME

Standard Part

The size prior to the flange is φ65 and following the flange is φ60. Suits the standard gaskets. Compatible with all aftermarket mufflers.

←	φ60 is too narrow, reduces the exhaust effectiveness.

Genuine ＆TOMEI ECU Compatible

Can be used in conjunction with the factory ECU and still benefit with the performance increase. For optimum results it is best used with the TOMEI ECU for best overall results. (Optional packages below).

OTHER RELATED PARTS

EXHAUST MANIFOLD

Packages	MSRP
Metal Catalizer＋Exhaust Manifold	$2,790 USD
Exhaust Manifold	$1,320 USD