Car looks like this now ( didn't take a pic when I put the IC back on:

But when I turn it on, it sounds terrible, makes huge amounts of smoke, and sometimes stalls.
https://www.youtube.com/watch?v=xUjZP3Bx2jg
It was dark and I was tired and shitty, so I'll have another go at it tomorrow morning and maybe do some data loggine.