Credit for Early VDECS (DPF) RetrofitBased on the Regulation as of September 7, 2012

This credit applies to installation of vehicle diesel emission control systems (VDECS, AKA diesel particulate filter ? DPF) installed before the following dates.

VDECS reduce PM or PM and NOx. For PM VDECS it must be the highest efficiency available for an engine/application and have a minimum control efficiency of 50%.

The amount of credit is calculated as follows.