{"product_id":"isr-performance-high-flow-cat-nissan-370z-infiniti-g37","title":"ISR Performance High Flow Cat - Nissan 370Z\/ Infiniti G37","description":"\u003cp\u003eThe ISR Performance High Flow Cats for the 370Z and G37 replace the restrictive factory cats with a 300-cell metallic substrate setup. Less restriction than stock for power gains, retains the factory O2 sensor location for plug-and-play install, and adds a more aggressive exhaust tone in the process. Bolts up to OEM or aftermarket exhausts that follow OEM spec.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It Does\u003c\/h3\u003e\n\u003cp\u003eStock 370Z and G37 cats restrict exhaust flow noticeably, particularly once you've added an aftermarket catback. Swapping to 300-cell metallic substrate high-flow cats opens up the exhaust path while still providing meaningful catalytic activity. The spun metallic substrate handles heat cycling better than ceramic alternatives. Mandrel bends throughout, fully TIG welded construction, and the factory O2 sensor location is preserved.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNissan 370Z and Infiniti G37 with VHR motors.\u003c\/strong\u003e \u003cstrong\u003eWill fit HR-motor variants as long as you're using OEM headers OR an aftermarket header with the OEM-style flange type and location.\u003c\/strong\u003e If you've changed header flange geometry, these cats won't bolt up. Use OEM-specs aftermarket exhausts on the downstream side. For the older 350Z \/ G35 (VQ35DE non-HR) high flow cats, see IS-HFC-Z33.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2x stainless steel high flow cats\u003c\/li\u003e\n\u003cli\u003e2x 2-bolt exhaust gaskets\u003c\/li\u003e\n\u003cli\u003e2x 3-bolt exhaust gaskets\u003c\/li\u003e\n\u003cli\u003e10x hardware (bolts and nuts)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e ISR Performance\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e IS-HFC-Z34\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eType:\u003c\/strong\u003e High flow catalytic converters (pair)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eVehicle Fitment:\u003c\/strong\u003e Nissan 370Z, Infiniti G37\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e VHR engines; HR engines with OEM headers or OEM-flange aftermarket headers\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless steel housing\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eSubstrate:\u003c\/strong\u003e 300-cell spun metallic\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e TIG welded, true mandrel bends\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eO2 Sensor:\u003c\/strong\u003e Retains factory location\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eOlder Z33 Variant:\u003c\/strong\u003e IS-HFC-Z33 (350Z\/G35 VQ35DE non-HR)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eSold:\u003c\/strong\u003e Pair (with gaskets and hardware)\u003c\/p\u003e\n\u003cp style=\"margin-bottom: 4px;\"\u003e\u003cstrong\u003eLegality:\u003c\/strong\u003e Off-road and competition use only\u003c\/p\u003e","brand":"ISR Performance","offers":[{"title":"Default Title","offer_id":45957112561861,"sku":"IS-HFC-Z34","price":522.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/2718\/9701\/files\/IMG_0530__56086.1466102777.500.659.jpg?v=1773346549","url":"https:\/\/www.isrcompetition.com\/products\/isr-performance-high-flow-cat-nissan-370z-infiniti-g37","provider":"ISR Competition","version":"1.0","type":"link"}