I already have v8 power in the form of the m60b40 in my E30. If I wanted to change to the m62b44 I'm well aware that it's not going to be a straight engine swap but can anybody say for definite what I would need to do to make the change.
The engines are very similar. The tricky one was the M62TU, as that has electronic throttles, vanos, and more electronics, but the M62 doesn't have too many differences, apart from a non nikasil block, and an extra 0.4 litres.
EWS- they'll all have EWS and a Bosch M5.2 ecu.
You'll need some sort of EWS but it's not going to be that tricky, you'd want an EWS Box, key chip, aerial etc from a breaker, and get them synced to the ECU.
You can either use the key chip, or just tie wrap it under the dash somewhere.
The ECU is a remapper rather than a rechip, and there's a good chance it'll work with your current older Bosch ecu.
Alpina used what I would assume your ECU in their B8 4.6 cars.
Ok. That causes me a bit of concern in so far as i'm handy with mechanicals but electricals is just not me (unless it's something that's well documented). The breaker part I can do. Any tips on getting them synced to the ecu?
STK, any relevance to the question you asked earlier?
If the engine comes with the ECU, it will most likely come with the EWS bits too.
If not, you'll need to get a key, EWS ring antenna (it surrounds the ignition barrel) the EWS send/recieve box (the antenna plugs into this) and the EWS box itself
Grab the plugs for these too, and they can be wired in to the new ECU, and then it will need diagnostics to sync them together.
Most engines come with the ecu, EWS box and key chip so you've got the important parts anyway, but I have a got a feeling that your current ECU will run it fine as I don't think there were any major electrical changes.