Others and myself have adapted the original Volvo Bosch D-Jet injection system that came on some B20s to work with the DIY programmable injection computer called Megasquirt. Others have gone with the stock D-jet system with the original computer. This is not as easy on a B18 since there was never a stock fuel injection head made for the B18. The B20 injection heads have an port for each cylinder.

But of course with enough time and money you can make anything you want. But I must warn you, a programmable injection system is much harder to tune to factory driveability levels than a well functioning set of SU carbs. But then again if your goal is to tinker and have fun and have as much control as possible, go for it.

Another thing that I just had to deal with is that you can't push start a FI car when your batter runs out.