18t, 3" turboback, Na cams, greens, VastTuning m4.4 etc.
Its running nicely but im wondering about the auto tcu. Is there different versions of the tcu boxes with different shift patterns or upgrades between revisions of the tcus.
When i floor it it gets quick to powerband but the gearbox got long gear spacings and i think it shifts too early, because i got the NA cams and a 18t it kinda has to work harder after a shift to get into the powerband again.
I would probably pick up 1s 0-100kmh with a little more rpm before shifting!
I wanted to do the pot mod to get faster shifts and less clutch slippage (mine doesnt slip but gets longer life when it grips harder) but mine does not have the famous big resistors that you swap for a pot where they should be on tutorials and on the other side of the board there are another pair of big resistors but they arent same value as the tutorial.
So my questions are:
1. Is there difference in NA and T5 TCMs. Like would the NA one rev higher before it shifts?
2. Difference in 850s vs early x70s before 1999 TCUs.
3. I know theres different TCM boards in 850 turbos but is one "better" in any way and wich ones are direct swap?
I attatched some pictures from the inside of my 1996 T5 TCM if anyone is intrested.







