I also installed an Innovate unit in my car. I don’t data log or anything and only have used it for getting a heavy drinking Holley 950 to a substantially leaner fuel curve. There’s no way I could have tuned the carb to where it’s at now without the O2 sensor. I still want to go EFI eventually, but it’s good enough for what it is and it has decent mph at the track. The bad things I’ve heard from some who’ve converted to EFI is that their cars slowed down and they ended up switching back to carb. I’ve spent a lot of time tuning the Holley and if I threw EFI on and got it all tuned correctly and it was slower than my carb, I’d be ticked! But I’d bet the idle and mid range would be better. New systems are constantly being released so I’m gonna hang back and see how much better they get in a year or two maybe.