ECU Swap question, 90 into a 75

[F+ST]

Yep just remap it, to use a second hand ECU I think you'll have to get it coded to the car's immobiliser anyway.

The 110 probably uses the same injectors and intercooler, the Turbo is basically the same except it has variable vanes on it.

You can remap a 90bhp one to 115bhp easily, you can probably do the same with a 75bhp too.

Thanks.  I was hoping that things like the immobiliser was an independent module and not part of the ECU, but sounds like I had a bit too much wishful thinking going on. By the time to start reprogramming the keys to the ECU as well, it would definitely make more sense to just get it mapped to 110 / 115 instead.