HKS HKS METAL CATALYZER for GR Yaris 33005-AT011

Product Code: 33005-AT011

Please select per-product shipping when placing the order. This can be shipped via economy air shipping to most parts of Asia, the US, and Europe. However, the territories cannot be covered with this shipping, we may request an additional shipping charge after the buyer places the order.

Description

HKS HKS METAL CATALYZER SPORTS CATALYTIC CONVERTOR for GR Yaris 33005-AT011

Brand: HKS
Product: Metal Catalyzer Sports Catalytic Convertor – GR Yaris GXPA16
Part Num: 33005-AT011

SPECIFICATIONS:
Material: Stainless Steel SUS304
Pipe Size (mm): 75
Cell Count:
-HKS: 150
-OEM: 600

PRODUCT NOTES:
Installation PDF: https://www.hks-power.co.jp/product_search/product/download/5184/ja/33005-AT011.pdf

COMPATIBILITY NOTES:
Can be used in conjunction with OEM heat shield
Not confirmed with Overseas model equipped with OPF
Not compatible with RC Grade equipped with OEM 17 inch

■Features

Metal catalytic converter has lower exhaust resistance and higher durability by using a low-density metal cell as opposed to the stock ceramic catalyst with a high density cell.
Both the first and second catalytic converter have 150-cell metal core, which significantly reduces exhaust resistance.
The catalytic converter has minimum size cell with an optimized ratio of precious metals to ensure both purification performance and exhaust pressure reduction, and has obtained an exhaust gas certificate from a third-party organization in Japan.
The first catalytic converter can be fitted with a stock heat shield to prevent heat damage*.
The pipe diameter is enlarged to D75mm (compared to the stock D70mm).
Buffed and polished, all welding was done by TIG welding for best aesthetic appearance.

※Can be fitted with a stock heat shield!

	Max. Output Power [kW/rpm]	Max. Output Torque [Nm/rpm]
Genuine catalyst + genuine muffler	204.2/5800	389.5/4300
“METAL CATALYZER” + Stock Exhaust	212.0/5700	409.0/4400
“METAL CATALYZER” + “STM”	218.0/5700	420.3/4300

*NOTE: STM=HKS “Super Turbo Muffler” exhaust (No. 31029-AT006)
*NOTE: Graphs and numerical values are the result of in-house measurements.
They may vary depending on the vehicle and measuring equipment.

As for the volume of sound, replacing only the catalytic converter does not make much difference in terms of numerical values, but the sound color will change to a higher pitch.
In the comparison of frequencies when measuring proximity exhaust noise, the stock catalytic converter peaks at 400Hz, but the HKS METAL CATALYZER peaks at 500Hz, which means HKS catalytic converter produce a higher exhaust sound than the stock catalytic converter.
When this product is installed in combination with the Super Turbo Muffler (31029-AT006), the proximity exhaust noise level is 88dB, which is well within the Japanese inspection standard value of 96dB.
The sound characteristics are more emphasized at 500 Hz, and at the lower frequencies below 200 Hz, resulting in a more powerful exhaust sound.