I tried a compression test but for some reason the tester wouldn't screw into my spark plug holes. I know the threads are the same because my plugs fit in the adapter that goes on the end of the tester to allow it to test bigger spark plug holes
I got someone else to try attaching the tester and they couldn't make it go on either. I'll have to find a friendly mechanic and get him to have a go.
Not had a chance to take off the inlet manifold yet and should have a chance to try my mates ECU this weekend.