John M.

I'm not surprised you screen your reviews prior to placing only the positive reviews on your site. I do not expect to see this on this site, so I will post it on other sites, including the BBB.
Do not buy a product from this company! The stage one chip I purchased did not work at all. Only change noticed using this product was the annoying bright blue light emitted from the device, distracting and unsafe while driving in dark conditions. It did not improve MPG or performance in any way. The company policy for returns is to be post marked by 14 days of purchase. Company also claims you must use it for 14 days to see results. In all fairness they allowed me to return 25 days after purchase at my request to give it a chance to succeed. No results noted. I returned it and they only gave back 75% of the purchase price (as per their policy). I assume they make their profit off customers that miss the 14 day window for returns or the 25% fees applied to those that do. I read mostly poor reviews and now I know why. Do not waste your time on this fraudulent product or company.