Maybe I'm still in the early stages (blacklist 10) that catchup for enemies isn't too relevant because I've been smoking them (like half the map away).
Although when I do make a mistake (ram head-on against another car, hit a wall, etc.) it is plainly obvious that given enough time I'll be able to catch up.
It's been a long while since I've read this manga but I remember that the first part of the manga was leaning towards Slice of Life/Comedy and only about 40 chapters or so did it become a full on Shounen Battle Manga.
I think the obvious thing is to make it a shounen battle manga on the get go with a heavy sprinkle of SoL/Comedy.
That's probably it. I remember it got kind of convuluted towards the end but I was a kid back then and maybe just didn't understood it that much.
Maybe lean more towards the vongola family story instead of whatever they did at the end?