sprint booster

So I just got mine in today and don’t feel like the lag response went away at all. I feel as the computer decides to let you rip it or granny it from the beginning of taking off. I was behind a charger and I couldn’t get closer to him the car kept driving at his speed couldn’t go higher and as...

Asking $180 for it $300 if bought new from the website Model SBHY0003S ( https://www.sprintboosterusa.com/product/sbhy0003s-sprint-booster-select-v3/) Selling because I sold the car and bought the 2016 model and the connector pin configuration is different so I can't use it. People won't...