When you were installing this super new stuff, how many times did you turn the key on and off without starting the engine to test things out?

Each time you turn the key on w/o starting it..the fuel pump and injectors always prime the cylinders with a little fuel. Do that 3+ times and there's a bit of excess fuel in there. Yes, it'll take longer to start.

It's totally normal and you caused it. You also fixed the problem the moment you got the car running.