Tab M.

Update 9/18/19
Performance Chip contacted me and made good on the 20% they kept. Took almost a year but they did refund and apologize that I had an unfortunate experience.

I bought one for my 2014 Honda Ridgeline, mileage dropped 3 mpg the first day I had it installed. I have tried contacting them twice to get a return authorization but they wont return emails, Total rip off company.
1/8/2019 Follow up, I finally got in contact with someone and they told me to return it, I asked if I would receive a 100% refund and was assured I would as long as it was not damaged. Well they refunded me $79.99 and kept $20 as a restocking fee. I filed a complaint with paypal who has decided to side with them and said the transaction was completed properly. DO NOT fall for their lies about the 100% guarantee and "What do you have to lose? $20 is what you have to lose. They are getting rich off of returns and is probably their plan to begin with the product does not do what they say or at least it didnt perform for me, perhaps it was not programmed properly in which case it was defective but they still charged me $20 plus the cost of returning. Unless you are sure this product will work for you or you dont mind losing $20 you better stay away..