Like all Dinan exhausts, our M550i Free Flow Exhaust is engineered to reduce low-RPM drone so the cabin of the vehicle is still intimate and not drowned in an excessively loud tone. In fact, on the G30 M550i equipped with a Dinan exhaust you will be astounded at how eerily quiet it is in the cabin. That is quickly changed however when exiting the vehicle and being witness to the sporty luxury sedan revving its stout V8 engine with the exhaust valves wide open. Blissfully bellowing a sweet deep tone that begs for more is the reward. When you succumb to those desires the throaty note at full load is even more rewarding letting all those around you know your M550i is seriously capable yet dignified at the same time.
Internally, the exhaust is typical of other Dinan exhausts and is designed to improve exhaust flow by reducing back pressure, resulting in increased power output and a great sporty sound that is civilized when you want it to be, and pleasantly aggressive under hard acceleration. This is partly courtesy of the retained computer controlled exhaust valves that limit noise during low speed driving and open fully during high-load conditions to allow free flow.
A new era of Dinan exhausts is upon us and they are marked with larger than life replaceable tips.
Benefits of the Dinan G30 M550i Free Flow Exhaust with Polished Tips:
+ +8 HP @ 6600 RPM, +6 FT-LB @ 6600 RPM
+ Four massive 4" diameter clamp-on, double-walled, polished and laser engraved exhaust tips.
+ Easy bolt-on installation with included mounting hardware
+ Enjoyably louder, sportier sound
+ 100% 304 stainless steel construction
+ Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions.
DOWNLOAD INSTALLATION INSTRUCTION HERE
|Labor Hours/Installation Hours
|Max HP Gain
||8 @ 6600 RPM
|Max Torque Gain
||6 @ 6600 RPM