DTA engine management, I feel is the best value on the market for its features. I have had very good luck with it and it has very user friendly software. It also has many other features included like traction and launch control.
For the DIY I have put together packages that give you everything you need to install and get your car up and running.
4 to 8 cyl engines with stock crank sensor, p8pro ecu, unterminated harness, wiring instructions,
startup map for your application and online tech support
$2100.00
4 cyl engine only with stock crank sensor, e48 ecu, unterminated harness, wiring instructions,
startup map for you application and online tech support
$1500.00