Housemate has a VL turbo he bought a few months ago, was running ok, on what I believe is a stock ecu, or period replacement(?) of similar type, haven't had a good dig around in it. Progressive(?) fail, will no longer start.
Anyway, he started to have trouble with it on a long drive, missing, carrying on, high fuel use, glowing cat (we dropped teh exhaust and the cat looked ok surprisingly).
Had a play with the timing light, no 1 seems to be firing consistently when cranking, but I threw the light on the coil wire and it is not consistent. I ha not done each cylinder but it looks like there is only spark on half of them at this stage. I'm not familiar with the RB cas but I was under the impression if the cas was going to fail it would work or it wouldn't, not for half the cylinders?