{"id":804334,"date":"2026-10-14T10:28:21","date_gmt":"2026-10-14T10:28:21","guid":{"rendered":"https:\/\/tunerscapital.si\/product\/cts-turbo-high-flow-katalizator-za-audi-s4-s5-b9-3-0t\/"},"modified":"2026-10-14T10:28:21","modified_gmt":"2026-10-14T10:28:21","slug":"cts-turbo-high-flow-katalizator-za-audi-s4-s5-b9-3-0t","status":"publish","type":"product","link":"https:\/\/tunerscapital.eu\/en\/product\/cts-turbo-high-flow-katalizator-za-audi-s4-s5-b9-3-0t\/","title":{"rendered":"CTS Turbo high-flow catalytic converter for Audi S4\/S5 B9 3.0T"},"content":{"rendered":"<p>The CTS Turbo high-flow catalytic converter for the Audi S4\/S5 B9 with the 3.0T (EA839) engine is designed to improve exhaust gas flow and increase the engine\u2019s performance potential. Compared with the restrictive factory catalytic converter, it allows for a freer-flowing exhaust system.<\/p>\n<p>It is manufactured using advanced CAD technology, ensuring an exact fit in the original catalytic converter\u2019s position. The housing is cast from T304 stainless steel, hand TIG-welded and welded with inert gas back-purging for long-lasting reliability.<\/p>\n<p>Combined with the factory exhaust system, it produces a sportier, more pronounced growl and more pronounced pops on downshifts. The sound is more pronounced on upshifts, while an already-installed aftermarket exhaust system will make it even louder. During relaxed driving with the factory exhaust, it does not produce unpleasant droning.<\/p>\n<h3>Product details<\/h3>\n<ul>\n<li>Developed and tested on the vehicle under real-world driving conditions<\/li>\n<li>200-cell steel high-flow racing catalytic converter<\/li>\n<li>Cast stainless steel housing<\/li>\n<li>Replaces the restrictive factory catalytic converter<\/li>\n<li>Improved exhaust gas flow for increased performance<\/li>\n<li>Pronounced sporty sound that remains restrained when driving at a constant speed<\/li>\n<li>No unpleasant droning with the factory exhaust system<\/li>\n<li>Fitting hardware included<\/li>\n<\/ul>\n<p>Suitable engine management software calibration is required to remove the check engine light (CEL), which may appear after installation.<\/p>\n<p><strong>Suitable for:<\/strong> Audi S4 VIII (B9), Audi S5 II (B9).<\/p>\n<h3>Approval<\/h3>\n<p>This part has no T\u00dcV certification (ABE, TTG or Teilegutachten).<\/p>\n<h3>Compatible vehicles (manufacturer data)<\/h3>\n<table class=\"tc-fitment-table\">\n<thead>\n<tr>\n<th>Vehicle<\/th>\n<th>Chassis<\/th>\n<th>Years<\/th>\n<th>Engine<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Audi S4<\/td>\n<td>\u2014<\/td>\n<td>2018\u20132021<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>Audi S5<\/td>\n<td>\u2014<\/td>\n<td>2018\u20132021<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>Before ordering, check that the product matches your vehicle (model, year and engine). If in doubt, write to us \u2014 we will check for you.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CTS Turbo 200-cell high-flow catalytic converter for the Audi S4\/S5 B9 with the 3.0T EA839 engine improves exhaust gas flow and delivers a sportier sound.<\/p>\n<p><strong>Fits:<\/strong> Audi S4 B9, Audi S5 B9<\/p>\n","protected":false},"featured_media":804336,"comment_status":"open","ping_status":"closed","template":"","meta":{"ep_exclude_from_search":false},"product_brand":[146168],"product_cat":[2070],"product_tag":[],"class_list":["post-804334","product","type-product","status-publish","has-post-thumbnail","tc_lang-en","tc_lang-hr","product_brand-cts-turbo","product_cat-izpuhi","product_shipping_class-dostava-teza-do-10kg","pa_proizvajalec-cts-turbo","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product\/804334","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/comments?post=804334"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/media\/804336"}],"wp:attachment":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/media?parent=804334"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product_brand?post=804334"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product_cat?post=804334"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product_tag?post=804334"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}