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How to Add Custom Channels / PIDs for Datalogging — DiabloSport inTune i3 & Trinity 2

Your tuner asked for a datalog with specific channels. Here is exactly where those channels live on a DiabloSport i3 and a Trinity 2 (T2), how to record the log, and how to get the file to us.

Both the DiabloSport inTune i3 and the Trinity 2 (T2) ship with a default set of datalog parameters (PIDs) chosen by DiabloSport for your vehicle. That default set is fine for basic diagnostics, but it is almost never the list a calibrator needs. Adding your own channels takes about two minutes once you know where the menu is — and the menu is in a completely different place on each device.

Short version: on the i3 it is Scan Tool → Data Logging → Configure → PID Select. On the Trinity 2 it is Gauges & Logging → double-tap a gauge → pick a PID group → pick the PID: on the T2 the gauge layout is the log layout.

Before you start

Part 1 — inTune i3: adding custom PIDs

  1. From the i3 Main Menu, select the Scan Tool icon.
  2. Select Data Logging. You will see three options: Record, Playback and Configure.
  3. Select Configure. This is where Gauge Mode, Gauge Units and PID Select live.
  4. Select PID Select. The i3 loads the list of parameters currently being logged for your vehicle.
The i3 Scan Tool menu — Data Logging is the third option
The i3 Scan Tool menu — Data Logging is the third option
The i3 PIDS LIST screen, where the logged parameters are listed and edited
The i3 PIDS LIST screen, where the logged parameters are listed and edited
Menu map: inTune i3 path to the datalogging PID list — Scan Tool, Data Logging, Configure, PID Select
Menu map: inTune i3 path to the datalogging PID list — Scan Tool, Data Logging, Configure, PID Select
  1. Tap the PID slot you want to replace. The i3 asks whether you want to Change PID or Delete PID.
  2. Choose Change PID. You are shown every parameter available for your vehicle, organized by family (fuel, spark, air, transmission and so on). Scroll to the channel you need and select it — it replaces the slot you started from.
  3. Repeat until every channel on your tuner's list is in the log. There is no practical limit on how much you customize the layout.
  4. Press the back arrow, then the green check to save your PID selections.
Swapping a datalog PID on the DiabloSport inTune i3 using Change PID and the PID family list
Swapping a datalog PID on the DiabloSport inTune i3 using Change PID and the PID family list
Channel not in the list? The device only exposes the parameters DiabloSport has mapped for on-screen use. Plug the i3 into a Windows PC and run DataViewer in live-stream mode — that unlocks a much larger PID set and a faster sample rate than the handheld alone. If you still cannot find it, the platform may not support it and we will ask for a different channel.

Part 2 — Trinity 2 (T2): adding custom channels

The T2 does not have a separate "PID Select" screen. Every channel you want in the log is assigned to a gauge, and the gauge layout is what gets recorded — so the trick is to build one layout dedicated to logging.

  1. From the Main Menu, select Gauges & Logging. The first of three gauge layouts appears; swipe left/right to move between them.
  2. Open the pull-down menu by swiping down from the top of the screen, then select Edit Layout.
  3. Pick one of the three layouts and swipe through the screen styles. Choose the style with the most slots (the 16-gauge style) so you can carry the most channels at once. Press Select.
  4. Press Save, then Save as new and name it something like DATALOG so your street layout stays untouched.
  5. With the gauge screen in view, double-tap the individual gauge you want to change.
  6. Select a PID group from the list (swipe up/down to see them all), then select the PID. A green check mark appears next to the selected PID.
  7. If the channel is a temperature or a speed, use the toggle to pick Imperial or Metric units.
  8. Select Save. Repeat for each remaining gauge until the whole requested list is on screen.
Trinity 2 Layout Editor — the three gauge layouts, each one touch-to-change
Trinity 2 Layout Editor — the three gauge layouts, each one touch-to-change
Select A Screen — swipe or use the arrows to pick a screen style, then press Select
Select A Screen — swipe or use the arrows to pick a screen style, then press Select
Press Save on the Layout Editor screen, then Save As New Layout and name it
Press Save on the Layout Editor screen, then Save As New Layout and name it
A Trinity 2 gauge screen — RPM, IAT, ECT, fuel trims and speed. These gauges are what gets recorded
A Trinity 2 gauge screen — RPM, IAT, ECT, fuel trims and speed. These gauges are what gets recorded
Double-tap a gauge, then Select A PID Group (Throttle, Miscellaneous, Electrical and so on)
Double-tap a gauge, then Select A PID Group (Throttle, Miscellaneous, Electrical and so on)
Select A PID — the check mark shows the active channel; the (i) icon explains what it measures. Press Save
Select A PID — the check mark shows the active channel; the (i) icon explains what it measures. Press Save

Trinity 2 and DataViewer screen images from DiabloSport product documentation. i3 screens from the inTune i3 sold here.

Menu map: Trinity 2 path for assigning a custom PID to a gauge
Menu map: Trinity 2 path for assigning a custom PID to a gauge
Useful T2 extras. The information icon next to a PID explains what it measures. Settings → Restore Default PIDs puts the factory list back — it does not unmarry the tool from your vehicle and it does not touch your tune (unplug the device for the change to take effect). Alert settings and tick marks are per-gauge, so you can have the T2 flag you if, for example, intake air temp climbs past a threshold mid-pull.

Part 3 — Recording the log

  1. Trinity 2: with the gauge screen in view, swipe down from the top and press Record. The LED above the recording icon glows blue while it is recording. Press Stop when you are done and save the log with a name you will recognize.
  2. inTune i3: Scan Tool → Data Logging → Record. Stop and save the same way.
  3. Drive the conditions we asked for. A usable log is normally a fully warm engine, a minute of idle, some light cruise, then two or three wide-open pulls in a gear near 1:1 — one pull per file where possible.
  4. Note anything unusual (a stumble, a surge, which gear it happened in) and send it with the file. Context saves a revision cycle.
The Trinity 2 pull-down menu — the Recording button is top left, next to Wallpaper, Theme Settings and Edit Layout
The Trinity 2 pull-down menu — the Recording button is top left, next to Wallpaper, Theme Settings and Edit Layout
Menu map: recording a datalog on a DiabloSport inTune i3 or Trinity 2, and what makes a usable log
Menu map: recording a datalog on a DiabloSport inTune i3 or Trinity 2, and what makes a usable log
Safety first. Never datalog wide-open-throttle pulls alone on a public road. Use a passenger to run the device, a closed course, or a dyno.

Part 4 — Sending the log to N2 Speed

  1. Unplug the device from the vehicle and connect it to your computer with the USB cable. It mounts as a removable drive named t2 or i3.
  2. Open the logs folder on that drive and locate the file you saved.
  3. Open it in DataViewer (free download from DiabloSport's downloads page). The check boxes on the left toggle each recorded channel on and off.
  4. Email the log file to sales@n2speed.com along with your VIN, current mod list, fuel used, and a note on what the vehicle is doing.
DataViewer with a log open — the PID tree on the left toggles each recorded channel on and off
DataViewer with a log open — the PID tree on the left toggles each recorded channel on and off
DataViewer 2 Select PIDs dialog — search and check the channels when live-streaming from a PC
DataViewer 2 Select PIDs dialog — search and check the channels when live-streaming from a PC
Menu map: copying a DiabloSport datalog off the device, opening it in DataViewer and emailing it to N2 Speed
Menu map: copying a DiabloSport datalog off the device, opening it in DataViewer and emailing it to N2 Speed

Channels we usually ask for

Exact names vary by platform and by device firmware. This is the general set — if a name below does not appear on your device, look for the closest equivalent in the same PID family, or ask us.

What it isTypical PID nameWhy we want it
Engine speedRPMEvery log. Ties every other channel to a point in the pull.
Manifold pressureMAP (kPa)Load reference on Dodge / Jeep / RAM and on boosted cars. 101 kPa ≈ atmospheric.
Intake air tempIAT / MATHeat soak shows up here first — it explains timing pulled on a hot pass.
Coolant tempECTProves the car was at operating temperature before the pull.
Spark advanceSPARKADV / TimingWhat the tune is actually commanding at load.
Knock retardKnock / Spark correctionThe single most important safety channel. Any retard under load gets reviewed.
Fuel trimsSTFT & LTFT (both banks)Shows fueling error at cruise before we touch the WOT tables.
Air/fuel ratioAFR / equivalence ratio, wideband if fittedFactory O2 data at WOT is limited — a wideband is worth adding.
ThrottleTPS / accelerator pedalConfirms the pull was actually wide open.
Vehicle speed & gearVSS, current gearNeeded to line up shift points and gear-based timing.
Battery voltageVoltsLow voltage skews injector and sensor data.
Dodge, Jeep, RAM and Chrysler note. These platforms are speed-density — load comes from the MAP sensor, so MAP in kPa is a mandatory channel. Our MAP kPa to boost conversion chart converts those readings to PSI. GM and Ford platforms use a MAF sensor as well, so include mass airflow on those vehicles.

Not sure which channels to log?

Send us your vehicle, mod list and what the car is doing. We will send back the exact channel list for your combination — and if you are already a tuning customer, the log review is part of your revisions.

Contact N2 Speed (954) 406-8550

FAQ

How many PIDs can the device log at once?

On the i3 you are editing a defined list of slots, so add the channels that matter most and drop ones you do not need. On the Trinity 2 the count is limited by the gauge layout — the 16-slot screen style holds the most. If you need more channels than the device holds, record two logs of the same pull with different layouts, or live-stream to a PC with DataViewer for a larger PID set.

Do I have to add the PIDs to a gauge to log them on a Trinity 2?

Yes. On the T2 the recording follows the gauge layout that is on screen, which is why we recommend building a separate layout named for logging and saving it with "Save as new".

Will changing PIDs affect my tune?

No. PID selection and gauge layouts are display and logging settings only. Even "Restore Default PIDs" leaves your tune and the tool-to-vehicle marriage alone.

The PID list is empty or greyed out.

Ignition is not in the ON position, the device is not fully communicating with the vehicle, or the device needs a firmware/calibration update. Cycle the key, reseat the OBD-II connector, and update the tool.

Can I send a screenshot of the graph instead of the file?

Please do not. We need the raw log file — the resolution in the data is what tells us whether timing is being pulled and where.

More tuning tips: Remote Tuning Tips index  ·  MAP kPa to boost chart  ·  HP Tuners channel list  ·  Dodge / Jeep / RAM DTC list