Product review (3 stars): Great product, but not the best customer experience
I purchased this item before Christmas and it was marked as shipped immediately. I waited and hadn't received it after a couple weeks so I emailed the company. It turns out they never shipped it yet. Don't tell me you did something and then let me find out you didn't do it.....It's kind of a pet peeve of mine. I read in another review the same thing. I think they mark items as shipped just so you can't cancel them. Once I did email them several weeks later they sent out the Difi unit.

I received the unit and went to install it. The threading on the lid of the unit was off so I emailed them asking for a new lid. They replied and said they would send it out but it did take another few weeks.

It's almost like these are made to order or something.

As for the device I have had it installed for about a week and it seems to work well.