Review on Enhanced Keyecu EWS Flip Remote Key 315MHZ ID44 1998-2005 for BMW 3 5 + 7 Series HU58: Upgrade Your BMW Key Experience by Ronnie Toups

This was for my 2001 BMW 540i. Excellent quality key. The feel is pleasant and firm. I ordered two keys and none had a transponder chip in them. I notified the seller and after 3 months I received the transponder chips. Once I glued them in place the key worked perfectly.