later, I hope I'll come back to it again. but does NOT change the facts. Installed these sensors on a HD Diesel Dually pickup. Worked twice as advertised. Now I have a sensor that refuses to send data to the app (new system installed less than 3 months ago, less than 3000 miles). I also have concerns about speed and refresh rate. Assuming all sensors were working properly, it took about 5 to 8 minutes and about 15 miles for all sensors to report feedback to the app in both cases. I'll play around and make sure the leak caused is logged in time, but for now I have my doubts. I will get back to you and hopefully be blown away by the amazing customer support and resolve this sensor issue. I will report technical support and delays.