LOL!
Sounds like my old 77 daily driver 280zt
I have run the SDS and it worked flawlessly for me.
I have now run the Electromotive TEC II on both my L28 and now on my 2JZ and have had no issues with it either. If you can find one, the TEC II is a very capable unit. It doesn't have all the bells and whistles of the TEC3R, but you can get into one for under $1000 if you hunt around.
I have a TEC3 (everything but the ECU itself) waiting in the wings and will probably install it at some time, but my TEC II works great, so it'll just have to wait. If it isn't broke, don't fix it!!