Every OTT tune is developed and validated on OTT’s in-house dynamometers and on the road. These are OTT’s own Dynojet charts: on most, the red line is the truck on its stock calibration and the blue line is the OTT tune, on the same fuel.
OTT tunes for the broadest torque curve, not a headline number — so read the whole curve, not just the peak.
Naturally aspirated · 91 octane
| Run | Peak torque | Peak power |
|---|---|---|
| Stock calibration | 224 ft-lb@ 3,990 rpm | 191 hp@ 5,370 rpm |
| OTT calibration | 240 ft-lb@ 3,700 rpm | 201 hp@ 5,080 rpm |
| Peak gain | +16 ft-lb | +10 hp |
Naturally aspirated · 91 octane
| Run | Peak torque | Peak power |
|---|---|---|
| Stock calibration | 319 ft-lb@ 3,800 rpm | 292 hp@ 5,620 rpm |
| OTT calibration | 346 ft-lb@ 3,650 rpm | 301 hp@ 5,660 rpm |
| Peak gain | +27 ft-lb | +9 hp |
TRD / Magnuson supercharger · 91 octane
| Run | Peak torque | Peak power |
|---|---|---|
| Stock Magnuson S/C calibration | 445 ft-lb@ 3,830 rpm | 417 hp@ 5,810 rpm |
| OTT calibration | 468 ft-lb@ 3,810 rpm | 458 hp@ 5,950 rpm |
| Peak gain | +23 ft-lb | +41 hp |
Naturally aspirated · 91 octane
| Run | Peak torque | Peak power |
|---|---|---|
| Stock calibration | 249 ft-lb@ 4,160 rpm | 216 hp@ 5,180 rpm |
| OTT calibration | 270 ft-lb@ 3,410 rpm | 222 hp@ 5,220 rpm |
| Peak gain | +21 ft-lb | +6 hp |
Dyno charts © Overland Tailor Tuning, published with permission. Figures are the peaks printed on each Dynojet sheet (SAE correction, smoothing 5), rounded to the nearest whole number. Results vary by dyno, conditions, modifications and the individual truck — these are OTT’s test vehicles, not a guarantee for yours. Where one chart covers several vehicles, it’s because OTT publishes that chart for each of them; the truck actually on the dyno is listed on the card.
Book a spot at an OTT Tune Day near you, or schedule the tune at our Grandview shop.
Tell us about your vehicle and your adventures — we'll build the plan.