advice needed I want to convert my st170 to injection running zx9 carbs on megajolt with edis at the moment
I have got some cbr throttle bodies with manifold I have got no experience with megasquirt so I have got know idea what parts I need

You can't do much better than an evening reading the ExtraEFI site, as well as being the best place to buy IMO, Phil is really helpful, and the site has tons of info....

Link

1st thing you need to decide is whether to keep the edis, or drive the coils direct from the squirt, I ditched the edis, but its up to you, and its a good 1st move as you can continue running carbs, with squirt controlling the sparks in place of the megajolt.

Then you'll need:

Throttle bodies, or a suitable plenum / body, & Injectors.

Throttle position sensor.

High pressure pump, flow and return between the tank - pump - fuel rail - pressure regulator - tank.

Lifter pump and swirl pot if you don't run direct from the tank, or if your tank is not baffled and you plan a lot of spirited cornering.

Air temp and coolant temp sensors, if you go plenum you can incorporate an air flow sensor - easier to tune than VE..

Lambda sensor and controller (if wideband - but you wouldn't want narrowband anyway for diy)

Several relays and fuses, but look at the wiring diagrams on ExtraEFI and you start to get the idea.

thanks megasquirt and wide band on order