Belayet Hosain

Hello everyone! I’m looking to upgrade my car's engine management system (EMS) and I’m a bit confused about where to start. My goal is to improve fuel efficiency and overall engine performance. I’ve read about standalone ECUs and piggyback systems, but I’m not sure which option would suit me better. Could anyone please share: Which EMS you are using and why? Is a standalone ECU worth the investment for a daily driver? Do I need professional tuning after installation, or can I manage it myself with basic knowledge? Any specific brands or models you'd recommend for beginners? Any advice or shared experience would be greatly appreciated. Thanks in advance!