Which MegaSquirt do I really need
 

I know from all my searches on the subject that an engine management system is the first to get for a Turbo setup.

I have a '99 with the OEM 1.8, might go VVT in the future. I am going to build a turbo kit to obtain around 250 RWHP. I want to purchase an MS DIY kit because I just love kits. Do I need the MS3, or can go to an MS2

Thanks

You're officially the billionth person to ask this exact question.
The answer is always, ms3+
It's like comparing computers with 10 years worth of technology advancement differences

I'm going out and buying a PS2 today. Brand new. For hundreds of dollars.

I'm going for a Sega Genesis. Cartridges rock.

do you even archaic?

Okay so the MS3+ is what I should get.
Which kit is that ?

MegaSquirt-III with PCB V3.0 – Unassembled Kit

or

DIYPNP Nippon Denso 76 Pin

Gonna be harsh with you if you keep asking questions this dumb

trubokitty.com if you can't follow the instructions there, you probably can't build a MS.

This is what you really need

https://i.ytimg.com/vi/fSGIEP2zTGw/hqdefault.jpg