How many parameters do you guys log when your doing a SD tune?
Phil

 

24 is the max with HPT, I usually do all 24.

 

I think I only look at 23 or so...I'd have to check my scan configs to make sure. Since I have a wideband hooked in, I really only need a few things just to make sure the histogram works (% error). I don't really care about much else.

 

I use EFILive, but I would imagine HPT's would be similar.

The following are the minimum I log while SD Tuning:

Absolute Throttle Position
Base Efficiency Numerator (% error PID in EFILive)
Commanded Air Fuel Ratio
Engine Coolant Temp
Engine RPM
External Analog Voltage
Ignition Timing Advance for #1 Cylinder
Intake Air Temperature
Intake Manifold Absolute Pressure
Retard Due to Knock
Wide Band AFR 1

The less PID's you log, the faster you can collect data = more data samples

 

I usually log 24 (I just use the default settings, but add dyn cyl air)

But as TAQuickness pointed out... the less you log the quicker the updates

This is from HPTs help file:
Single Channel Dual Channel
1-6 Bytes 20 frames/sec 40 frames/sec
7-12 Bytes 10 frames/sec 20 frames/sec
13-24 Bytes 5 frames/sec 10 frames/sec

 

Thats what I am wondering, Last time I logged I only had the bare mininum for SD. Wideband, RPM, map, and maybe 1 or 2 others. The sampling rate was definitely faster.
Phil