{"product_id":"cts-turbo-b5-audi-a4-high-flow-cat","title":"CTS Turbo B5 Audi A4 High Flow Cat","description":"\u003cp\u003eCTS Turbo's B5 A4 1.8T High Flow Cat Pipe is the go-to cat upgrade for your Audi. It drops straight into the spot of the restrictive stock catalytic converter, which sits immediately after the turbocharger.\u003c\/p\u003e\u003cp\u003eThe pipe runs 3\" stainless steel with smooth mandrel bends and two O2 sensor bungs, with the option to add a third. You get substantial power gains, better exhaust flow, and a throatier sound. Look closely and you'll see a flare near 4\" that tapers to 3\", designed to optimize flow as exhaust gas transitions from the turbo into the pipe. It's one of the best bang-for-buck upgrades for A4 owners, and it looks the part too. Each 3\" pipe is mandrel-bent and hand TIG welded.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1997-2001 B5 Audi A4 1.8T\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eT304 stainless steel construction\u003c\/li\u003e\n\u003cli\u003eMandrel-bent stainless steel\u003c\/li\u003e\n\u003cli\u003eFully TIG welded design\u003c\/li\u003e\n\u003cli\u003eOptional third O2 bung available\u003c\/li\u003e\n\u003cli\u003eInstall hardware included\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTo clear the CEL that will occur, proper tuning software must be used — Stage 2 software is strongly recommended.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEmissions disclaimer:\u003c\/strong\u003e This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.\u003c\/p\u003e\u003cp\u003eShips from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email \u003ca href=\"mailto:support@korespeed.com\"\u003esupport@korespeed.com\u003c\/a\u003e.\u003c\/p\u003e","brand":"CTS Turbo","offers":[{"title":"Default Title","offer_id":51579817066552,"sku":"CTS-EXH-TP-0001-B5-CAT","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1775\/7947\/files\/TP-0002-CAT.jpg?v=1765846468","url":"https:\/\/korespeed.com\/products\/cts-turbo-b5-audi-a4-high-flow-cat","provider":"KORE SPEED","version":"1.0","type":"link"}