Another reply regarding the 451A2... anyone heard this before (below)? I think I am still leaning toward the 451A; seems like most the members have installed this version and liked it. Anyone have the 451A2?


Hi Kevin,
According to the manufacturer, A2 is a special version targeting AMG engine. BDD451A does not work on AMG/SRT-6 w/ AMG engine. You will see the improvement after installing A2.

Thank you.
Andy Wong
sale@PartsExporter.com