I've been running Todd's Wild rail for a couple years. It's worked great, but with no definable results, as I installed a cam, injectors, etc at the same time.
It's been too long since I've had fluid mechanics for me to intelligibly comment on wave phenomina in the rail; however, I do know that one of the biggest drivers of utilizing the pulses in a beneficial manner, is maintaining the same separatation between pilot and main events for which the rail was designed.
It's never been clear to me how the TST, Smarty, etc "plays" with the pilot, but I'd imagine that when we advance timing, that it's advancing both of these? There's really far too much variability and too many factors involved to accurately determine what's going on inside the rail and combustion chamber on our trucks with the limited data acquisition most of us have access to. Thus, the only data to go off of, is dyno results, track times, etc...although changes within a few percent may be within the error band anyway?
--Eric
