{"product_id":"catback-exhaust-for-honda-civic-1988-1991","title":"Catback Exhaust for Honda Civic (1988-1991)","description":"\u003ch2\u003eHigh-Flow Stainless Steel Catback Exhaust for 1988-1991 Honda Civic\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit catback exhaust system replaces the restrictive, corrosion-prone factory exhaust on the 1988-1991 Honda Civic hatchback to lower exhaust backpressure, optimize gas velocity, and enhance overall engine efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Honda Civic Exhaust Restriction and Corrosion Bottlenecks\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust assemblies on the fourth-generation \u003cstrong\u003eED\/EF Chassis\u003c\/strong\u003e Civics utilize narrow, sub-2.0-inch aluminized mild steel piping prone to severe rust perforation and internal baffle deterioration over time. Additionally, OEM manufacturing relied on standard press-crush bending, introducing tight choke points that disrupt continuous exhaust scavenging. This restricted flow increases thermal buildup and exhaust backpressure, choking top-end volumetric efficiency on naturally aspirated \u003cstrong\u003eD-Series\u003c\/strong\u003e powerplants.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed from mandrel-bent stainless steel, this performance catback system features a 63mm (2.5-inch) continuous-diameter layout designed to eliminate internal flow separation and maintain laminar gas velocity. Precision TIG-welded flanges and pre-positioned factory-style mounting hangers allow direct bolt-on installation to factory rubber isolators. Fitted with a straight-through, sound-absorbing performance muffler and a 4.5-inch polished tip, it reduces parasitic backpressure and smooths out exhaust pulses while providing a crisp, resonant tone without excessive low-RPM cabin drone.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1988-1991 Honda Civic (3-Door Hatchback)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eD15B2\u003c\/strong\u003e, \u003cstrong\u003eD16A6\u003c\/strong\u003e (\u003cstrong\u003eD-Series\u003c\/strong\u003e) \/ \u003cstrong\u003eED6\u003c\/strong\u003e, \u003cstrong\u003eED7\u003c\/strong\u003e (\u003cstrong\u003eEF Chassis\u003c\/strong\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e92–108 hp \/ 89–100 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1988-1991 Honda Civic Base 3-Door Hatchback (1.5L L4 \u003cstrong\u003eD15B2\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e1988-1991 Honda Civic DX 3-Door Hatchback (1.5L L4 \u003cstrong\u003eD15B2\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e1988-1991 Honda Civic Si 3-Door Hatchback (1.6L L4 \u003cstrong\u003eD16A6\u003c\/strong\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the ED\/EF Chassis Civic?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1988-1991 Honda Civic 3-door hatchback equipped with the \u003cstrong\u003eD-Series\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this system bolt directly to the factory catalytic converter?\u003c\/strong\u003e\u003cbr\u003e Yes, the 2-bolt inlet flange is engineered to match the OEM catalytic converter layout for a straightforward bolt-on fitment.\u003c\/p\u003e\n\n\u003ch3\u003eThe Honda Performance Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to complement high-revving naturally aspirated JDM platforms, this cat-back exhaust system unlocks true exhaust flow potential, ensuring sharp throttle response and a distinct, deep exhaust profile built to withstand hard street and track use.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50512352903416,"sku":"DS-E8DAKQWJD","price":278.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catback-exhaust-for-honda-civic-1988-1991-1.jpg?v=1789426038","url":"https:\/\/performancechiptuning.com\/fr\/products\/catback-exhaust-for-honda-civic-1988-1991","provider":"Performance Chip Tuning","version":"1.0","type":"link"}