I have the pdm on my 07 K9. Only problem I had on the install was getting it all to fit. I have air ride and the pump is attached under the battery box. Very basic install if you have any mechanical know how. It's basically plug n play.
All goood stuff to know. Thanks Jerry, I know RUDAWG did the WP and is happy, Glad to see the BDMPP product is also an alternative. I am still EHC with fingers crossed. THank u all that answered with your experiences.