Marco,
I installed "Ver. 3. 03B, Data: 1. 02B Stock torque management" this morning and then the #2 Soft Catcher program with no timing. I put about 100 miles on it today - about 50 miles empty and about 50 miles towing a tractor.
First of all, the "Smarty Stock torque management" is not like a stock OEM torque management

. It is very much stronger than the stock OEM program. In fact, the "Smarty Stock torque management" is a work of art and is very comparable to how the Van Aaken C3. 1 pressure box comes on - very smooth, yet strong low end without the touchy throttle.
That being said I do have some testing results in regards to the rattling.
-Empty or towing with the TST off, I get no rattling at all.
-Empty with TST on timing only I get a really mild rattle at about 22-23 psi boost and 1900-2000 rpm or so. With the original Smarty program the rattle was really bad in comparison.
-Towing with TST on timing only, the rattle was a lot worse (louder and metallic sounding) and it started at the same 22-23 psi boost pressure and 1900-2000 rpm or so. The rattle seemed to disappear in the mid-30 psi boost range.
So I ended up turning the TST off while towing. I didn't try the "Ver. 3. 03B, Data: 2. 02B Mild torque management increase" program with the TST because I figured that the rattling would be worse.
I think if you be so kind to do a bit more tuning on the "Smarty Stock torque management" program then the rattling would all, but disappear.
Thanks!