{"product_id":"hks-toyota-gr-corolla-legamax-sports-exhaust-2023-toyota-gr-corolla","title":"HKS Toyota GR Corolla LEGAMAX Sports Catback Exhaust System - 2023+ Toyota GR Corolla","description":"\u003cp\u003eHKS offers the LEGAMAX Sports Exhaust for the GR Corolla, increasing performance while maintaining sound quality that HKS is known for. A worthy system for anyone who wants quality proven behind exceptional engineering.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003eHKS provide an \"EXHAUST ERROR CANCELLER\" to prevent error codes when the valve is not in use, allowing for a worry-free experience. \u003cmeta charset=\"utf-8\"\u003e(PN: G89580-T76010-00)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"1042\" height=\"586\" class=\"responsive\" src=\"https:\/\/www.youtube.com\/embed\/4Zku7xekRuw\" title=\"TOYOTA GR COROLLA  4BA-GZEA14H  HKS LEGAMAX SPORTS\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve-less, Dual Tail Tip Layout:\u003c\/strong\u003e This exhaust system features a valve-less design and dual tail tip layout. The large-diameter titanium slash tailpipe creates a commanding rear view, leaving a strong impression compared to the stock exhaust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSturdy and Aesthetic Bracket Placement:\u003c\/strong\u003e Brackets connecting the left and right silencers are positioned at the center notch and feature the HKS logo, ensuring both visual appeal and structural integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes \"EXHAUST ERROR CANCELLER\"\u003c\/strong\u003e: HKS provide an \"EXHAUST ERROR CANCELLER\" to prevent error codes when the valve is not in use, allowing for a worry-free experience. \u003cmeta charset=\"utf-8\"\u003e(Use w\/ PN G89580-T76010-00)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth and Enjoyable Driving:\u003c\/strong\u003e Experience a comfortable and noise-free ride at low revs. The overall sound quality is robust, delivering a deep bass sound that intensifies as the revs increase, providing a powerful auditory experience\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound levels: 91\/90dB (idle: 71\/70dB)\u003c\/strong\u003e, stock is 88dB (idle: 70dB)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cmeta charset=\"utf-8\"\u003eAdvantages of installing HKS LEGAMAX Sports\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe two-piston layout has been meticulously designed to maintain low exhaust pressure across all engine speeds.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIn the low and mid-range of the engine, where the valves close in the stock setup, you can revel in a robust sports sound without any unwanted muffled noise!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0732\/3457\/9704\/files\/31021_AT_009_9_8d762f084e.png?v=1780435240\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFlow rate\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eStock - Valve Closed: This setting secures the valve on the stock muffler in the closed position.\u003cbr\u003eStock - Valve Open: This setting fixes the valve in the open position on the stock muffler.\u003cbr\u003eHKS: LEGAMAX Sports 31021-AT009 (this product）\u003c\/p\u003e\n\u003cp\u003eThe graph above illustrates the relationship between flow rate and pressure, as measured on a flow bench. Lower pressure relative to flow rate indicates reduced resistance. At a flow rate of 200 L\/s, the respective pressures are as follows:\u003cbr\u003eStock - Valve Closed: 9.3 kPa\u003cbr\u003eStock - Valve Open: 5.1 kPa\u003cbr\u003e\u003cbr\u003eThese results demonstrate that compared to the closed valve and this product, pressure is reduced by 68%, even when the valve is open, a 41% reduction in pressure is achieved. This reduction is attributed to the pipe diameter, layout, and internal structure of the silencer, which collectively contribute to significantly lowering exhaust pressure\u003c\/p\u003e\n\u003ch3\u003eEXHAUST ERROR CANCELER\u003c\/h3\u003e\n\u003cp\u003eRegarding the genuine muffler's exhaust switch valve, the manufacturer's website defines its\u003cbr\u003epurpose as follows:\u003cbr\u003eAchieving low exhaust pressure at high engine speeds.\u003cbr\u003eDelivering a sporty sound when the valve is open.\u003cbr\u003eEnsuring comfortable cruising at low and medium engine speeds.\u003c\/p\u003e\n\u003cp\u003eThese functions are carried out through the motor-controlled operation of the valves.\u003cbr\u003eIf the valve is not used when installing this product, the following situations may occur:\u003cbr\u003e1. If the coupler is left disconnected: An error code will occur.\u003cbr\u003e2. If the entire motor for the valve is disconnected from the genuine muffler during idling condition: An error code will occur.\u003c\/p\u003e\n\u003cp\u003eIn both cases, the check engine lamp may not illuminate, but a record of disconnection or motor abnormality will be stored. To identify and diagnose these errors, it is necessary to use an OBD2 diagnostics machine.\u003c\/p\u003e\n\u003cp\u003eAs OBD vehicle inspections are set to commence, there is still a concern about the possibility of error codes being triggered.\u003c\/p\u003e\n\u003cp\u003eThe \"EXHAUST ERROR CANCELER\" is an electrical component designed to prevent errors related to the exhaust system. When connected, it ensures that no error codes are recorded, and no warning check engine lamps are illuminated. This part is designed based on the manufacturer's error countermeasure information, and its installation will not cause any issues with the vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBy implementing measures to address error codes, which are a concern when the valve is not used, this product provides a stress-free and safe solution for your vehicle's exhaust system. It effectively prevents errors and maintains the smooth operation of your vehicle.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0732\/3457\/9704\/files\/31021_AT_009_10_8eb95ad605.png?v=1780435248\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe provided graphs and figures are based on in-house measurements and are subject to variation depending on the specific vehicle and measuring equipment used. Actual results may differ based on individual vehicle characteristics and the type of measuring equipment utilized\u003c\/p\u003e\n\u003cp\u003eThe installation of the muffler has proven effective in enhancing power and torque in the mid-range RPMs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe output has increased by up to 4.0%, while torque has seen an improvement of up to 5.2%. This reflects the positive impact of the muffler on the vehicle's performance within that RPM range\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0732\/3457\/9704\/files\/hks31021-AT009_performancenumbers.png?v=1780435399\"\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"HKS","offers":[{"title":"Default Title","offer_id":48785093132536,"sku":"hks31021-AT009","price":2110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3457\/9704\/files\/small_31021_AT_009_2_35d7557435.jpg?v=1780434743","url":"https:\/\/driven.media\/products\/hks-toyota-gr-corolla-legamax-sports-exhaust-2023-toyota-gr-corolla","provider":"Driven.Media","version":"1.0","type":"link"}