How many items are you guys running or logging in a single log in hp tuners? I know some say 24 some say 48. And what do you normally log.

 

depends on the car and the ECU.....
the less you can log, the faster it will be.

if you only need a few things to do what you need to do, then only use a few things...
if you need a bunch of things, than use a bunch of things..

but dont data log it if you really dont need it.


I normally log RPM, MAP/MAF, ECT, AFR, AFR Commanded
for Idle stuff I add in IAC, STIT, LTIT, Throttle Follower/Cracker
I usually do transmission stiff by feel unless I am troubleshooting an issue like no lockup or shifts feeling funny.
if I feel like I'm running out of Injector, I will add Injector Duty Cycle and Injector Pulsewidth
when I want to check closed loop fueling, I add STFT and LTFT
if its acting stupid I will add o2 voltages to make sure the o2's are switching properly...

but I never add it all at once... I only use what I need for that particular situation.