{"product_id":"hks-metal-cat-front-pipe-nissan-z34-vr30ddtt-33005-an006","title":"HKS METAL CAT FRONT PIPE NISSAN Z34 VR30DDTT 33005-AN006","description":"\u003cdiv id=\"detailTitle\"\u003eFAIRLADY Z (Z) RZ34\u003c\/div\u003e\n\u003cdiv id=\"containerWrap\"\u003e\n\u003cdiv class=\"sectionFlex\"\u003e\n\u003ch2\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/uploads\/logo\/exhaust\/metalcatalyzer.gif\" alt=\"\" border=\"0\"\u003e\u003c\/h2\u003e\n\u003cdiv class=\"price\"\u003e\n\u003cp\u003eCode No. 33005-AN006\u003c\/p\u003e\n\u003cp class=\"yen\"\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"contents\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eIntroducing the ultimate metal catalyzer for Fairlady Z owners!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/kewPmD5GDsowtCrrq4ZVGBicvBWXtC3dhMI8esTa.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/UuP8Znjh6Pa1CGFcGZWatkD02GjnAbixbdcIlFes.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"sectionFlex column50-50\"\u003e\n\u003cdiv class=\"leftBlock\"\u003e\n\u003ch4\u003e\u003cspan\u003e■Features\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWhile the stock catalytic converter has a fine ceramic mesh, our product uses a low-density metal catalyst.\u003c\/li\u003e\n\u003cli\u003eIn comparison, the stock catalytic converter has two catalysts (first catalyst 600 cells, second catalyst 400 cells) while the HKS Metal Catalyzer has one catalyst (150 cells), which significantly reduces exhaust resistance.\u003c\/li\u003e\n\u003cli\u003eThe catalyst part is a three-way catalyst newly developed for the RZ34, and by optimizing the metal ratio and designing it for exhaust efficiency achieving both purification performance and low exhaust pressure and has obtained an exhaust gas certificate from official Japanese regulation.\u003c\/li\u003e\n\u003cli\u003eA thermo seal and a specially designed heat shield are included as a measure against heat damage.\u003c\/li\u003e\n\u003cli\u003eThis product is buffed to a mirror finish and TIG welded, also focusing on the appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rightBlock\"\u003e\n\u003cp\u003e\u003cspan\u003eCatalyst Comparison\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/AW0NfOKzKyfD62RQekCgpY8DB4jGKPgoOYreM2Ce.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003e■Layout\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/p2xq6pf1ofB11IpLNDRv7BDJMkX5op62BLXcqBPi.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification No.\u003c\/td\u003e\n\u003ctd\u003e33005-AN006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Material\u003c\/td\u003e\n\u003ctd\u003eSUS304\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalyst Specs\u003c\/td\u003e\n\u003ctd\u003e150 Cell (Use one each on the  left and right sides)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain Pipe Diameter\u003c\/td\u003e\n\u003ctd\u003eBefore catalyst 74.7mm ⇒ After catalyst 70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Level Stock\u003c\/td\u003e\n\u003ctd\u003eWith stock muffler: 80dB (Idle: 56dB)\u003cbr\u003eWith STM: 85dB (Idle: 62dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Level HKS\u003c\/td\u003e\n\u003ctd\u003eWith stock muffler: 84dB (Idle:58dB)\u003cbr\u003eWith STM: 93dB (Idle:65dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin Ground Clearance\u003c\/td\u003e\n\u003ctd\u003e120mm (Stock centre brace)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Weight\u003c\/td\u003e\n\u003ctd\u003e10kg (Stock 13.8kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e●Layout Comparison\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompared to the stock catalytic converter, the number of catalysts and cells has been\u003cbr\u003ereduced, and the pipe diameter and layout have been optimized to achieve\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elow exhaust pressure\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHKS Metal Catalyzer (left side)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/jUws91VCo615iYdZzJF2W0vOoH9MLH3DczVPozUp.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStock catalytic converter (left side)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/ZEl4VAxfCkMD1NoPQ74EULiZssxMJaCBi6Sb0Vfy.jpg\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e●Performance comparison (HKS Metal Catalyzer only)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"sectionFlex column50-50\"\u003e\n\u003cdiv class=\"leftBlock\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/sQMz5EJhKEDEhDvXzxWtHjMgYMBDTB16fKrqUidT.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rightBlock\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/ieJwF7XZ4LkdWNhjn6wIUHXuZYvG3mzpHAahN79d.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBy changing to the HKS Metal Catalyzer, exhaust resistance is reduced, and even with a vehicle equipped with a stock muffler, you can expect a power increase of around 3500 to 5000 rpm. In-house testing showed that the maximum change from the stock product was:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e　\u003cspan\u003ePower: 10.8(14.6)\/4700 (kW\/(PS)rpm) \u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e　\u003cspan\u003eTorque: 22(2.2)4700 (Nm(kgf・ｍ)\/rpm)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eMax Power (kW\/(PS)rpm)\u003c\/td\u003e\n\u003ctd\u003eMax Torque (Nm(kgf・ｍ)\/rpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock\u003c\/td\u003e\n\u003ctd\u003e303.1(412.1)\/5600\u003c\/td\u003e\n\u003ctd\u003e569.6(58.0)\/2900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock Muffler + HKS Metal Catalyzer\u003c\/td\u003e\n\u003ctd\u003e304.2(413.6)\/5600\u003c\/td\u003e\n\u003ctd\u003e580.1(59.1)\/4400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eTest Vehicle: Fairlady Z (3BA-RZ34)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eProduct in use: METAL CATALYZER　33005-AN006\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e*The graphs and figures are the results of in-house measurements. They will vary depending on the vehicle and measuring equipment. \u003cbr\u003e*When controlled by the stock ECU, the maximum output value is suppressed by the control, so there is no change in the peak value.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e●Performance Comparison (HKS Catalyzer + HKS Super Turbo Muffler)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"sectionFlex column50-50\"\u003e\n\u003cdiv class=\"leftBlock\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/BUH6UmUKhUJRDq4yz3nhiq6etGQGtl6woJCvLlpG.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rightBlock\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/VgdfLcToy5P92O3LQKmXVw0sBScXU5Io7GLsIQdA.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBy installing the HKS Metal Catalyzer and HKS STM, exhaust resistance at mid- to high-speed revolutions is greatly reduced, and power can be expected to increase at around 3300 to 5700 rpm. In-house testing showed the maximum change from the stock was:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e　\u003cspan\u003ePower: 14.3(19.4)\/5000 (kW\/(PS)rpm) \u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e　\u003cspan\u003eTorque: 26.1(2.6)4700 (Nm(kgf・ｍ)\/rpm)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eMax Power (kW\/(PS)rpm)\u003c\/td\u003e\n\u003ctd\u003eMax Torque (Nm(kgf・ｍ)\/rpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock\u003c\/td\u003e\n\u003ctd\u003e303.1(412.1)\/5600\u003c\/td\u003e\n\u003ctd\u003e569.6(58.0)\/2900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock Muffler + HKS Metal Catalyzer\u003c\/td\u003e\n\u003ctd\u003e304.2(413.6)\/5600\u003c\/td\u003e\n\u003ctd\u003e580.1(59.1)\/4400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHKS STM + HKS Metal Catalyzer\u003c\/td\u003e\n\u003ctd\u003e308.2(419.1)\/5600\u003c\/td\u003e\n\u003ctd\u003e583.6(59.5)\/4400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eTest Vehicle: Fairlady Z (3BA-RZ34)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eProducts in use: Metal Catalyzer (33005-AN006)\u003cbr\u003e　            　　　　HKS Super Turbo Muffler (31029-AN011)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e*The graphs and figures are the results of in-house measurements. They will vary depending on the vehicle and measuring equipment. \u003cbr\u003e*When controlled by the stock ECU, the maximum output value is suppressed by the control, so there is no change in the peak value.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e●Performance Comparison (HKS Catalyzer + HKS Super Turbo Muffler + HKS Power Editor)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"sectionFlex column50-50\"\u003e\n\u003cdiv class=\"leftBlock\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/JiDrbL4UugutOLx6yBkCo0oH4ZCRYmfWfpKzXtYT.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rightBlock\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/8z7ucd7hZyfVrFu9LF5zajSmjzUyroBCnoQnf00A.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBy installing the HKS Power Editor in addition to the HKS Metal Catalyzer and HKS Super Turbo Muffler, you can experience the true value of boost up tuning.\u003cbr\u003eYou can expect a wide range of power up from about 2200 to 5700 rpm, and in our internal tests, the maximum change from the stock was\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e　\u003cspan\u003ePower: 33.3(45.2)\/4700 (kW\/(PS)rpm) \u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e　\u003cspan\u003eTorque: 85.6(8.7)3300 (Nm(kgf・ｍ)\/rpm)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eMax Power (kW\/(PS)rpm)\u003c\/td\u003e\n\u003ctd\u003eMax Torque (Nm(kgf・ｍ)\/rpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock\u003c\/td\u003e\n\u003ctd\u003e303.1(412.1)\/5600\u003c\/td\u003e\n\u003ctd\u003e569.6(58.0)\/2900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock Muffler + HKS Catalyzer\u003c\/td\u003e\n\u003ctd\u003e304.2(413.6)\/5600\u003c\/td\u003e\n\u003ctd\u003e580.1(59.1)\/4400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHKS STM + HKS Metal Catalyzer\u003c\/td\u003e\n\u003ctd\u003e308.2(419.1)\/5600\u003c\/td\u003e\n\u003ctd\u003e583.6(59.5)\/4400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHKS STM + HKS Metal Catalyzer + HKS PE\u003c\/td\u003e\n\u003ctd\u003e311.0(422.8)\/5400\u003c\/td\u003e\n\u003ctd\u003e635.5(64.8)2900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eTest Vehicle: Fairlady Z (3BA-RZ34)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eProducts in use:\u003cbr\u003eHKS Metal Catalyzer (33005-AN006)\u003cbr\u003eHKS Super Turbo Muffler (31029-AN011)\u003cbr\u003eHKS Power Editor (42018-AN001)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e*Graphs and values are based on in-house measurements and may vary depending on the vehicle and measuring equipment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e●Performance comparison\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn flow bench tests, the HKS catalytic converter (hereafter referred to as HKS Metal Catalyzer) was able to\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ereduce exhaust resistance by approximately 80%\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ecompared to the stock catalytic converter.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/pDr0gkVeuTBtF9YIyX6iFzNvuygzkrTVQiZsmNR8.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"sectionFlex column50-50\"\u003e\n\u003cdiv class=\"leftBlock\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003ePoint：\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e~Flange (turbocharger connection part)~\u003cbr\u003e\u003c\/strong\u003eThe stock catalytic converter flange has a straight structure with an inner diameter of 62.5mm and is MIG welded on the inside.\u003cbr\u003eHKS has adopted a\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003etapered shape\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003ewith an inner diameter of 66mm instead of the straight structure with an inner diameter of 62.5mm, and by changing to TIG welding on the outside, we have reduced exhaust resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e~Catalyst~\u003cbr\u003e\u003c\/strong\u003eNewly designed HKS catalyst has 150 cell specification.\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eWe have been able to improve purification performance while reducing exhaust resistance.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rightBlock\"\u003e\n\u003cp\u003e\u003cstrong\u003eFlange section difference (cross section)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/md0LfelMPmJr10EBkNWYzgKMqBZKXR9VC9xk9m7V.gif\" alt=\"\" width=\"600\" height=\"468\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e●Performance comparison\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/GvVtbO5SKkbT2lKVWUBMLTiUnTOehRGdCUb6tE6x.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eBy installing an HKS Metal Catalyzer, the increase in secondary exhaust pressure can be reduced even when engine speed increases.\u003cbr\u003eThe lower the exhaust pressure is, the less load there is for the same output, allowing for more margin.\u003cbr\u003eSecondary exhaust pressure can be achieved by replacing only the HKS Metal Catalyzer.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eUp to 32% lower than stock.\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003eBy replacing HKS Metal Catalyzer along with HKS STM.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eUp to 74% reduction compared to stock.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eMaximum secondary exhaust pressure (kPa\/rpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock\u003c\/td\u003e\n\u003ctd\u003e170.8\/6400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStock Muffler + HKS Metal Catalyzer\u003c\/td\u003e\n\u003ctd\u003e145.4\/6550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHKS STM + HKS Metal Catalyzer\u003c\/td\u003e\n\u003ctd\u003e113.2\/6450\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eTest Vehicle: Fairlady Z (3BA-RZ34)\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eProducts in use: \u003cbr\u003eHKS Metal Catalyer (33005-AN006)\u003cbr\u003eHKS Super Turbo Muffler (31029-AN011)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e*The graphs and numbers are the results of in-house measurements. They may vary depending on the vehicle and measuring equipment.\u003cbr\u003e*Secondary exhaust pressure: Exhaust pressure from downstream of the turbocharger to upstream of the first catalyst.\u003cbr\u003e*Pressures in the table are expressed in absolute pressure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e●Sound comparison\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy installing the HKS Metal Catalyzer, the sound coming from the muffler will also change.\u003cbr\u003eCompared to the stock, the mid-to-high range, which is considered comfortable above 250Hz, has been tuned, producing a sportier sound that is more like a V6 engine.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.hks-power.co.jp\/storage\/syshks\/product_db\/tuKYm6W1BGyifzrkM85SPfPqbgm3DpO7A5piBgFn.gif\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e*Replacing the catalytic converter will increase nearby exhaust noise. When combined with our muffler,\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eit will comply with safety \u0026amp; legal standards\u003c\/span\u003e, so you can use it with peace of mind.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll table-unset-border-collapse\"\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCombination\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eSounde Level【dB】\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eHKS CAT + Super Turbo Muffler\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e93\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eHKS CAT + Stock Muffler\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e84\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003eStock CAT + Stock Muffler\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan\u003e80\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eSTM…Super Turbo Muffler (31029-AN011)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e*Graphs and figures are in-house measurement results and may vary depending on the vehicle and measuring equipment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"table-scroll\"\u003e\n\u003ctable class=\"list\" cellspacing=\"0\" cellpadding=\"2\" width=\"100%\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"head\"\u003e\n\u003cth rowspan=\"2\" nowrap class=\"col_vehicle\"\u003eVehicle\u003c\/th\u003e\n\u003cth rowspan=\"2\" nowrap\u003eClassification\u003c\/th\u003e\n\u003cth rowspan=\"2\" nowrap\u003eModel\u003c\/th\u003e\n\u003cth rowspan=\"2\" nowrap\u003eEngine\u003c\/th\u003e\n\u003cth rowspan=\"2\" nowrap\u003eModel Year\u003c\/th\u003e\n\u003cth rowspan=\"2\"\u003ePipe Size\u003c\/th\u003e\n\u003cth rowspan=\"2\" nowrap\u003eCode No.\u003c\/th\u003e\n\u003cth rowspan=\"2\" nowrap\u003eManual\u003c\/th\u003e\n\u003cth rowspan=\"2\" class=\"col_remarks\"\u003eRemarks\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"head\"\u003e\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"col_vehicle\"\u003eFAIRLADY Z (Z)\u003c\/td\u003e\n\u003ctd width=\"50\"\u003e3BA-\u003c\/td\u003e\n\u003ctd width=\"50\"\u003eRZ34\u003c\/td\u003e\n\u003ctd width=\"50\"\u003eVR30DDTT\u003c\/td\u003e\n\u003ctd width=\"50\"\u003e22\/08 -\u003c\/td\u003e\n\u003ctd\u003e74.7mm ⇒ 70mm\u003c\/td\u003e\n\u003ctd nowrap\u003e33005-AN006\u003c\/td\u003e\n\u003ctd width=\"70px\"\u003e\u003ca title=\"\" href=\"https:\/\/www.hks-power.co.jp\/en\/product_db\/exhaust\/db\/33711\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd class=\"col_remarks\"\u003eCompatible with MT, not compatible with AT or NISMO model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":48481462878308,"sku":"33005-AN006","price":6799.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/6260\/1060\/files\/kewPmD5GDsowtCrrq4ZVGBicvBWXtC3dhMI8esTa.jpg?v=1780036485","url":"https:\/\/kyp.com.au\/products\/hks-metal-cat-front-pipe-nissan-z34-vr30ddtt-33005-an006","provider":"KYP Performance House","version":"1.0","type":"link"}