{"product_id":"dinan-valved-axle-back-exhaust-polished-tips-bmw-g20-330i-g22-430i","title":"Dinan Valved Axle-Back Exhaust with Polished Tips - BMW G20 330i \/ G22 430i Coupe (2019-2024)","description":"\u003cp\u003eThe B48 in your 330i or 430i pulls harder than most people expect from a 2.0-liter four. The factory exhaust does nothing to let anyone know. Small 90mm tips, a muffled tone, and exit pipes that choke down to 60mm. It is a sharp car that sounds like a commuter.\u003c\/p\u003e\n\u003cp\u003eThe Dinan Valved Axle-Back Exhaust for the BMW G20 330i and G22 430i Coupe opens those exits up to 83mm per side, keeps the factory valve control and finishes the rear with dual 4 in. polished tips. Dinan measured +4 HP and +3 lb-ft at 6600 RPM, and the note gets deeper than you would expect from a four-cylinder.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow the Dinan 330i Axle-Back Exhaust Frees Up the B48\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn the stock car, an 85mm inlet splits into two 60mm pipes. That is a real bottleneck at the back of the system. Dinan keeps the 85mm inlet and splits it into dual 83mm pipes instead, so the exhaust leaves with far less restriction. Drone abatement is built into the design and the factory valves still close at low speed, so the car stays quiet when you want quiet and opens up when you use the throttle.\u003c\/p\u003e\n\u003cp\u003eIt is 100% T304 stainless steel, TIG welded. The dual straight-cut tips are 102mm double-walled units, polished, with a laser-engraved Dinan logo. Next to the factory 90mm tips, the difference is obvious from across the parking lot.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAxle-Back Exhaust Fitment, Install and Legal Status\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt bolts to the factory mounting points and hangers for OEM-style fitment, with a Dinan-quoted labor time of 1.5 hours. No coding required. Dinan states it does not affect vehicle emissions and is legal for sale or use on emissions-controlled vehicles. One thing to know before you order: on the 4 Series, fitment is confirmed on the 430i Coupe only. Dinan part number D660-0091. Sold by AutoTecknic, an authorized Dinan dealer.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDinan valved axle-back exhaust with dual 83mm exit pipes\u003c\/li\u003e\n  \u003cli\u003eDual 4 in. (102mm) double-walled polished clamp-on tips\u003c\/li\u003e\n  \u003cli\u003eMounting hardware, clamps and exhaust hangers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDinan-tested +4 HP and +3 lb-ft at 6600 RPM\u003c\/li\u003e\n  \u003cli\u003eExit piping enlarged from dual 60mm to dual 83mm\u003c\/li\u003e\n  \u003cli\u003eFactory valve control retained for quiet low-speed running\u003c\/li\u003e\n  \u003cli\u003eDrone abatement engineered into the design\u003c\/li\u003e\n  \u003cli\u003e100% T304 stainless steel, TIG welded\u003c\/li\u003e\n  \u003cli\u003eDual 102mm straight-cut polished tips vs 90mm stock, laser-engraved logo\u003c\/li\u003e\n  \u003cli\u003eBolt-on install with factory mounting points, about 1.5 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFits the following B46\/B48-powered BMW models:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBMW 3 Series \/ G20 Sedan (2019-2024): 330i, 330i xDrive\u003c\/li\u003e\n  \u003cli\u003eBMW 4 Series \/ G22 Coupe (2021-2024): 430i, 430i xDrive\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot confirmed for the G23 430i Convertible or G26 430i Gran Coupe. Dinan has not tested those body styles, and their extra underbody bracing may interfere with installation. Not for M340i or M440i models.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is one of the easier exhaust installs on the G20 platform. A DIYer with jack stands and basic hand tools can do it, and a shop will have it done in about 1.5 hours. Follow the Dinan instructions included with the kit.\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003eLet the exhaust cool completely and raise the car safely on a lift or jack stands.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the factory exhaust valve actuator and loosen the clamp ahead of the rear section.\u003c\/li\u003e\n  \u003cli\u003eSupport the factory rear section, release it from the hangers and remove it.\u003c\/li\u003e\n  \u003cli\u003eInstall the Dinan axle-back on the factory mounting points with the supplied hangers and clamps, transferring the valve actuator as directed.\u003c\/li\u003e\n  \u003cli\u003eFit and align the tips, torque all clamps, reconnect the actuator and check for leaks with the engine running.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Dinan","offers":[{"title":"Default Title","offer_id":51268701192438,"sku":"DNND660-0091","price":1663.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2674\/6278\/files\/eab692abccb73d266b6eb259b58ed4a8L.jpg?v=1784135586","url":"https:\/\/autotecknic.com\/products\/dinan-valved-axle-back-exhaust-polished-tips-bmw-g20-330i-g22-430i","provider":"AutoTecknic USA","version":"1.0","type":"link"}