Tomeygun said:
I honestly have NO idea... I guess maybe the way the timing comes on is different then the way the TST does it and they would good togther. Also keep in mind the BDDL does fuel really hard down low, Myabe it gets the TST rolling much fast, makeing more HP ??
All I know is some people with BDDL (CL edition) and TST are putting big numbers down!
From the theoretical standpoint, note that the TST extends duration and advances timing beyond stock values. With the DLr, there are new "stock" values! so the dowloader will:
1. give additional timing advance. since TST is a static advance, the total timing advance is the additive combination of the DLr + CDS. Whatever timing advance the DL gives, TST adds to it.
2. raise rail pressure. this will force a higher rail pressure for a given injector duration. keep in mind that injector duration is a combination of the new DLr mappings and whatever extensions TST makes on top of that. this means that a given horsepower will be obtained at a lower HP setting on the TST. I expect that the opportunity to make more power with the TST is with the careful addition of pressure. This is probably why those with a customized pressure box (don M, for example, or TS) do well.
Another thing -- with the very radical timing advance accomplished by the combination of new DLs maps and TSTs own advance (accomplished via cam and crank signal fooling), very large injector duration values would be possible while keeping average timing advance reasonble. So to me this is both a benefit and a concern for this combo. During high power level delivery, injector duration is very long, so the radical timing advance is not as problematic in terms of the average. Still, before I put that comb on my truck I would want some evidence that things are not seriously out of whack.
At idle or light throttle, the average timing may be more radically advanced than at 500 HP. All depends on what the DLr maps do. What ever they do, TST adds several degrees to it. And with a short injector duration (light throttle, rail pressure up, etc) , all the fuel gets dumped in very early.