Our formal contact information is listed below. If you have a technical question, we prefer that you give us a call as email communication will be a much slower process. We have to sort through hundreds of emails each week, so going back and forth with questions is difficult and time consuming. Email orders are ok. If you sent an email and never received a response, please give us a call as we might have missed your email. Phone: 480-922-6807 Fax: 480-922-6811 Email: taperf@aol.com Facebook: https://www.facebook.com/TA-Performance-Products-Inc-107026505985420/ If you need to get ahold of us outside of normal business hours, on a Holiday, or the weekend, please send a message to our Facebook page. I will get the message and will be able to assist you. If you don't have Facebook, you should be able to send me a private message here and I will get an email notification. Thank you.