I noticed an immediate difference after plugging this chip into my 2019 Honda Civic Hatchback 1.5L turbo. Feels quite a bit peppier and throttle response has definitely increased. The initial fit onto the plug was a little tight but I was able to get it on. I'm only a few days in and can't wait to see the improvement in another weeks time. The website is a little confusing since it states 100% money back guarantee, then terms and services reads that there is a 25% restocking fee. This is probably the main issue that people have with this company. I don't anticipate needing to send it back, but if I do I'm a little worried about the process.
Performance wise, the chip seems to do what it says. So far I'm happy with my purchase.