Originally Posted by BrianBrave
Go for the 181 - The ECU will adapt well to it and it's less $$ then any F/M pulley. You can tune it up later for max performance. You can't go wrong - these pulleys are better designed then the OEM.
Thanks for pointing that out Brian.
The mechanical dampener in the new pulleys will dampen throughout the entire RPM band. It contains about 28 internal pieces, including 8 springs.