Sprint Booster or ECU reprogramming
Hello everyone, I'm new to the forum and would like first to say this might be the most helpful forum I've seen.
A new question I'd like to ask is what's the best use of a few hundred dollars? Sprint Booster or ECU reprogramming? The ECU is more money and means a few days without my car. The SB just makes reaction time better.
Any opinions?
Thanks.