2026 4Runner TRD Sport Dyno Results (Stock vs Tuned on 86 Octane)

[CAMTuning]

Had the opportunity to get a 2026 4Runner TRD Sport on our dyno.


Truck is bone stock, ~3,000 miles, running 86 octane.


For context, I have extensive remote tuning experience with this platform, and have many Tacomas on our dyno, both gas and hybrid.
This was a great opportunity to have a local one on the dyno and validate what we’ve consistently been seeing in logs.

Baseline

• 255whp / 353wtq
• KCLV: 13
• Lean behavior through peak torque
• Roughly ~15whp lower than most Tacomas we’ve tested

So not just low octane — also a softer baseline than expected for this platform.

After Tuning (Still 86 Octane)

• 292whp / 404wtq
• KCLV increased to 17
• Fueling corrected — especially in the peak torque region, now safer than stock under load

Gains

• +37whp
• +50wtq

Observations

• The lean condition in the torque region matches what we’ve seen on the dyno and remote tuning.
• Same engine/platform — Baseline and gains are in line with 91, but lower peak numbers due to octane limitation.

Bigger Picture

Having tuned a large number of these remotely, the patterns were already there in the data.


The dyno just confirmed it:

• Stock calibration isn’t always ideal under load
• Even on 86 octane, you can improve power and safety at the same time

Not trying to turn this into a stock vs tuned debate — just sharing what shows up when you actually measure it.

Bottom Line

• Same 2.4T platform (Tacoma / 4Runner)
• Same trends in logs and on the dyno
• And even on 86, there’s meaningful room for improvement when it’s calibrated properly

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[TrdProGirl84]

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