Toby, Diy-Autotune would be an excellent choice of supplier
get the V3.0 PCB, I would have but was not out when I purchased mine and Marks, it has a VR conditioner circuit built in which is a bonus, the firmware/software is the same accross both V2.2/3.0 so we can still help each other out , no problemo
Get the PCB, the componenets, the casing , you'll need the DB37 loom and connector( buy complete!!) the processor should come pre-programmed , you'll need to reflash it to suit the code variation you intend to use, me an Mark can assist with that, its the hardest part of setting it up.
Assuming you are building yourself, make sure and
get the stimulator kit too, its invaluable for getting it all working, also allows you to run simulations of load vs rpms etc on the bench without needing the ECU in the car
You'll need an 02 sensor, makes sense to order the LC1 wideband while you've got your wallet out M8, an NB can be used but for tuning the WB is a must have.
HTH, sorry for the no reply on PM, been unwell of late dude
