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The Dinan Free Flow Axle-Back Exhaust is a sporty sounding exhaust at wide-open throttle when you want it but also quite and civilized when you are at light throttle cruise
Muffler - CrateMuffler - 3 in Offset Inlet - 3 in Center Outlet - 14 in x 4
88 in Oval Body - 19 in Long - Stainless - Natural - Universal - Each
Dinan incorporates a beautifully crafted X-pipe made from mandrel-bent tubing for minimum restriction
Exhaust System - Xtreme - Cat-Back - 3 in Diameter - 4-1/2 in Polished Carbon Fiber Tips - Valved - Stainless - Natural - 3
Dinan High Flow Throttle Body - 2002-2006 BMW 550i/650i/750i RHO The Dinan Free Flow Axle-BackMany people seem to be under the false impression that the new Valvetronic engines don't have a throttle body. This is clearly not the case however the throttle body for these applications functions as part of the traction control system, as well as a ''safety valve'' of sorts. Regardless of the function the size of the hole still represents a restriction of intake air flow, making the larger bore of the Dinan high flow versions enable the engine to
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