Which guide to follow for a DIY MS2? The one in the forum says to not use it.
 

Hello guys,
I have this MS2 board that was setup for ITBs in a Fiat I no longer have, and I'm thinking of following a guide step by step to check what components I need to change to get it ready for my 90's 1.6. This was setup to get signal from VR and I had setup this weird circuit in the proto for it to work with a specific coil, I don't even remember what it did but it includes a TC4427 and it sent the signal to the igniter of that coil I had.
My main goal is achieve better gas mileage on highway and nice power on top if it can get any better, eventually modding this shit to get stupid things like powershifting and launch control for when I go turbo or some shit.

I checked the guide in the forum but it says to not follow those instructions because they are old.
I also found this: Megasquirt 2 Assembly - Miata Turbo FAQ which talks about the better ignition mod from Joe P which I was already thinking of doing. Is this a good guide to follow?
If not the other route is to follow the msextra assembly guide with the differences for the Miata I guess?

I don't want to start mixing up because I'll get it wrong, so I figured I'd ask you guys which guide to follow.