The ECU thing won't work.
1.) They will bring a 99 Si ECU if they want to start it.
2.) The 2001 has an immobilizer, so if they see a type ARRRRRRR they know to do #1 or bring a flatbed.
3.) The last type R i heard of being stolen was pushed 8 miles on the freeway , apparently they forgot #1
Help:
1.) Get Lo-Jack (or equivalent GPS tracker), it's the best cost-for-safety thing you can do.
2.) Clutch locks, alarms, and removed steering wheel WILL slow them down...hopefully enough to prevent it from missing... but they took my GF's stock 98 Ex anyways.
3.) Remove fuses that control fuel delivery.
4.) Add switches that interrupt fuel delivery.
5.) Remove fuel.
6.) Get another Lo-Jack.
7.) Write down your VIN, stamp your name+VIN on every part you can.
Good luck.