Ok pulling out my hair here trying to get info on this. Most guys will put the 4th gear pressure switch N.O and just lock up in 4th. But most of the time its for non ecm vehicles. This is where my situation comes in. In my Holley setup I believe I can leave the N.C 4th gear switch in and play with ther lock up in the tuning. However I switch the solinoid with the ecu is up to me , but the difference is the software parameters I have to do this. Meaning I could lock up in 3rd and 4th if the parameters are met. Here is what I have to work with:I can control the solinoid in 2 ways.
#1: Using below paramters I can do it under certain conditions from stated sensors
Min TPS%
Min RPM
Min Coolent temp
Now all 3 have to be met to lockup the converter,but also in this senerio I can choose up to 3 more parameters to unlock it in this section.
Wot Tps%: Basically anything above set % converter unlocks
MAP%: Basically anything above set KPA value converter unlocks
Unlock time: After converter unlocks how much time in sec until it can lock again even if min paramters are met.
Now I can use all three unlocks or none at all.
#2 I can set of a custom output to lock converter under under say KPA from map. And do a range mode on this say lock at 60kpa and unlock at 75kpa.
But the best thing about this setting is I can do up to 5 parameters to lock and unlock the converter. Heres an example to lock and unlock converter in this situation using 4 ranges parameters:


KPA L 55----75U
RPM L 1200----3000U
TPS% L 25------60U
coolent temp L160------225U

Now I can make that all parameters need to be met or just one.
Now this are just some examples, I can also use timing, baro,pulswidth,MAT,FP,AFR, Oil Pressure and Fuel pressure.
After all this here is my question. Should I just leave the N.C switch and try to run the lockup like factory or just pull out the N.C switch and put in the N.O and just lock up in 4th? Im leaning towards where I stand now because It seems like I have alot of parameters to get the lockup under control using what I have. Any imput from the lockup experts please? Thanks