@gunrunnerjohn posted:Actually Stan, there is a lot of evidence that the Rev. L TIU can indeed lose DCS signal strength in a number of environments! I had one that dropped to 25% of it's normal signal strength just being used on my test bench. I've repaired a host of TIU's for that very problem, it's actually quite common. The issue is the 74ACT244 IC used in the application with the gates are paralleled,...
OK. This is getting in the techno-geek realm...
I'm not disagreeing with you! 
However, the idea of paralleling the 74ACT244 has been used (to the best of my knowledge) since day 1 of the TIU. What I'm thinking it must be something else about the design of the Rev. L that is the issue. Heck, unless I missed it, I/we don't know if Charly even has a Rev. L TIU?! 
We're all entitled to our opinions, and I most definitely respect yours, but parallel'ing gates of logic IC chips like the 74ACT244 is a tried-and-true design technique. I agree that it is something you probably won't find in a manufacturer datasheet...and surely something I figure they don't "teach" in college EE courses!
But to the matter at hand. I am speculating, I repeat speculating, that Charly may in fact have 2 (or more?) things going on here. 1) the PS3 upgraded engines may have reduced/demoted DCS signaling performance, and 2) the TIU channel may have reduced/demoted DCS signaling performance.
I can understand to the reluctance to perform "surgery" on the engine to re-route harness wiring or whatever. Hence, if the only option is to mess with matters EXTERNAL to the PS3 engine then so be it. IF (in capital letters) that is the case and the engine is not to be touched, then it seems to me the question is can the DCS "environment" be changed to work with the upgraded PS3 engine as is.
