Real Dyno Results: Before and After Supercharger Installation
Dyno Results: Before and After Supercharger Install
Quick Summary
Chassis dynamometer testing delivers the hard numbers that marketing claims never can. AME Motorsport has compiled real-world dyno data from multiple supercharged vehicles — all tested on factory-spec all-terrain tyres, not stripped-down road rubber — to show exactly what a VT supercharger kit delivers. Across four popular platforms, results consistently land between 35% and 52% gains in peak power and torque. These are not theoretical figures pulled from simulation software. They are repeatable, chassis-dyno-verified numbers recorded under controlled conditions on vehicles owners actually drive off-road.
Why Dyno Testing Matters
Anyone can claim a power figure on a spec sheet. The difference between a credible result and a hopeful estimate comes down to how you measure it. Chassis dynamometer testing places the driven wheels on calibrated rollers and measures actual power delivered to the ground. That means every drivetrain loss — gearbox friction, differential drag, tyre deformation — shows up in the result. The number you read on the dyno screen reflects what actually pushes the vehicle forward.
AME Motorsport tests every supercharger kit on a Dynapack or Mainline chassis dyno under standardised conditions. Ambient temperature, barometric pressure, and humidity are all logged and used for SAE or DIN correction. This ensures results recorded on a mild autumn morning in Melbourne compare fairly to a test run during a humid summer afternoon in Dubai.
Real Tyres, Real Weight, Real Results
Most published dyno figures come from vehicles running lightweight road tyres or even semi-slick rubber. That approach flatters the numbers because narrower, lighter tyres generate less rolling resistance on the dyno rollers. AME Motorsport takes the opposite approach. Every vehicle tested wears the same all-terrain tyres the owner drives on daily — BF Goodrich KO2s, Toyo Open Country ATs, or similar. The vehicle carries its full interior, spare tyre, and standard accessories. This methodology produces lower headline numbers than a stripped-down test, but those numbers translate directly to what the driver feels on the road and the trail.
This commitment to honest testing separates verifiable engineering from inflated marketing. When AME Motorsport publishes a dyno result, you can trust that your vehicle will deliver the same performance with the same kit installed.
Toyota FJ Cruiser 1GR-FE 4.0L V6: Dyno Results
The Toyota FJ Cruiser remains one of the most popular platforms for supercharger installation. Its 1GR-FE 4.0-litre V6 produces a respectable 200 kW (272 hp) from the factory, but the engine's overbuilt bottom end and conservative factory tune leave significant headroom for forced induction.
AME Motorsport fitted the Toyota FJ 4.0 Cruiser VT Supercharger Kit to a completely stock FJ Cruiser running 285/70R17 all-terrain tyres. The vehicle completed three back-to-back dyno pulls in baseline configuration, followed by supercharger installation and three more pulls under identical conditions.
FJ Cruiser Dyno Data
| Metric | Stock | Supercharged | Gain |
|---|---|---|---|
| Peak Power (hp) | 272 | 379 | +107 hp (+39%) |
| Peak Power (kW) | 200 | 279 | +79 kW (+39%) |
| Peak Torque (Nm) | 380 | 541 | +161 Nm (+42%) |
| Peak Torque (lb-ft) | 280 | 399 | +119 lb-ft (+42%) |
| Boost Pressure | N/A | 6 psi | — |
The torque curve tells the real story. The stock FJ Cruiser reaches peak torque at approximately 4,400 rpm and drops off sharply above 5,000 rpm. With the VT supercharger installed, the torque curve flattens dramatically. The engine produces over 480 Nm from 3,200 rpm through to 5,500 rpm, delivering a broad, usable powerband that transforms both on-road overtaking and low-range crawling.
A 42% gain in torque on a vehicle running all-terrain tyres and carrying full weight represents a genuinely transformative improvement. Owners consistently report that the supercharged FJ Cruiser feels like an entirely different vehicle — particularly at altitude, where the positive-displacement supercharger compensates for the thinner air that normally robs naturally aspirated engines of power.
Toyota Tundra 3UR-FE 5.7L V8: Dyno Results
The Toyota Tundra 5.7L V8 already delivers strong performance from its 3UR-FE engine, but the sheer mass of the full-size truck limits acceleration. AME Motorsport installed the Toyota Tundra 5.7 VT Supercharger Kit and conducted both chassis dyno and real-world acceleration testing to quantify the gains.
Tundra Performance Data
| Metric | Stock | Supercharged | Gain |
|---|---|---|---|
| 0–100 km/h | ~8.0 s | 6.2 s | –1.8 s |
| Estimated Power Gain | — | — | 35–40% |
| Boost Pressure | N/A | 6 psi | — |
The 0–100 km/h time of 6.2 seconds places the supercharged Tundra in sports sedan territory — remarkable for a vehicle weighing over 2,500 kg and riding on all-terrain tyres. The Eaton TVS positive-displacement blower in the VT kit delivers immediate boost from idle, which eliminates the lag that turbocharger systems suffer at low engine speeds. This characteristic makes the supercharged Tundra particularly effective for towing and heavy-load hauling, where low-rpm torque availability determines real-world capability.
The 3UR-FE V8 responds exceptionally well to forced induction thanks to its forged crankshaft, robust connecting rods, and conservative factory compression ratio. The VT supercharger kit operates well within the engine's design tolerances, which means long-term reliability remains consistent with factory expectations.
Jeep Wrangler Pentastar 3.6L V6: Dyno Results
The Jeep Wrangler Pentastar 3.6L V6 presents a compelling case for supercharging. The factory engine produces adequate power for highway cruising, but the Wrangler's upright aerodynamics, heavy axles, and large tyres create significant parasitic losses. Owners who fit 35-inch or larger tyres frequently find the stock engine struggling on highway grades and during overtaking manoeuvres.
AME Motorsport addressed this gap with the Jeep Wrangler 3.0/3.6 VT Supercharger. The results speak for themselves.
Wrangler Performance Data
| Metric | Stock | Supercharged | Gain |
|---|---|---|---|
| 0–100 km/h | ~8.5 s | 5.9 s | –2.6 s |
| Peak Torque (Nm) | ~353 | 600+ | +247 Nm (+70%) |
| Boost Pressure | N/A | 6–8 psi | — |
A 0–100 km/h time of 5.9 seconds from a Wrangler on all-terrain tyres turns heads at traffic lights and, more importantly, provides the driver with genuine confidence during highway merges and overtaking. The 600+ Nm of torque available at the crankshaft translates to massive low-range capability for rock crawling, steep hill climbs, and sand driving.
The Pentastar V6 architecture accepts forced induction cleanly. The VT supercharger mounts directly to the engine using a precision-machined intake manifold, maintaining factory throttle body placement and sensor locations. This clean integration ensures that the factory engine management system continues to operate within its designed parameters.
Toyota Land Cruiser 200 1GR-FE 4.0L: Dyno Results
The Land Cruiser 200 series fitted with the 1GR-FE 4.0-litre V6 shares its engine architecture with the FJ Cruiser but operates in a substantially heavier vehicle. The additional mass of the 200 series — often exceeding 2,700 kg when loaded for touring — means that the factory power output of 272 hp feels marginal at best.
AME Motorsport fitted the LandCruiser 4.0 VT Supercharger Kit equipped with the Eaton TVS1320 supercharger unit to a fully loaded Land Cruiser 200. The larger TVS1320 provides higher airflow capacity, which suits the heavier vehicle's demand for sustained, high-load performance.
Land Cruiser 200 Dyno Data
| Metric | Stock | Supercharged | Gain |
|---|---|---|---|
| Peak Power (hp) | 272 | 419 | +147 hp (+54%) |
| Peak Power (kW) | 200 | 308 | +108 kW (+54%) |
| Boost Pressure | N/A | 8 psi | — |
The 419 hp result represents the highest output recorded on this platform with a VT kit. The Eaton TVS1320 unit delivers higher boost pressure than the standard kit, which contributes to the increased power output. This configuration transforms the Land Cruiser 200 from a vehicle that requires careful momentum management on highway grades to one that overtakes confidently and maintains speed effortlessly even when fully loaded with touring gear.
The Land Cruiser 200's robust cooling system handles the additional thermal load from forced induction without modification. AME Motorsport includes an air-to-air intercooler in the VT kit, which keeps intake air temperatures manageable across a wide range of ambient conditions and sustained high-load driving.
Summary Comparison: All Platforms
The following table consolidates key results from every platform tested. All figures represent chassis dyno measurements taken on vehicles running all-terrain tyres at full kerb weight.
| Vehicle | Engine | Stock Power | SC Power | Power Gain | Key Result |
|---|---|---|---|---|---|
| Toyota FJ Cruiser | 1GR-FE 4.0L V6 | 272 hp | 379 hp | +39% | 541 Nm peak torque |
| Toyota Tundra | 3UR-FE 5.7L V8 | ~381 hp | ~530 hp (est.) | ~35–40% | 0–100 km/h in 6.2 s |
| Jeep Wrangler | Pentastar 3.6L V6 | ~285 hp | ~430 hp (est.) | ~50% | 0–100 km/h in 5.9 s, 600+ Nm |
| Land Cruiser 200 | 1GR-FE 4.0L V6 | 272 hp | 419 hp | +54% | Highest output on platform |
Across all four platforms, power gains range from 35% to 54%. Torque gains are even more impressive in percentage terms, reaching 42% on the FJ Cruiser and over 70% on the Wrangler. These consistent results across different engine architectures and vehicle weights validate the VT supercharger kit design and the Eaton TVS supercharger platform that underpins it.
What Affects Your Dyno Results
No two dyno results are identical, even on the same vehicle with the same kit. Understanding the variables that influence your numbers helps set realistic expectations and identify opportunities for optimisation.
Fuel Quality and Octane Rating
Higher-octane fuel allows the engine management system to run more aggressive timing, which directly increases power output. AME Motorsport conducts all baseline and supercharged testing on 98-octane fuel (RON). Running 91 or 95 octane will produce safe but slightly lower results. The factory engine management system retards timing automatically when it detects knock, so there is no risk of damage — only a modest reduction in peak output.
Altitude and Air Density
Positive-displacement superchargers partially compensate for altitude-related power loss because they force a fixed volume of air into the engine regardless of ambient pressure. However, the supercharger itself draws from ambient air, so total system output decreases at higher elevations. Testing at sea level produces the highest numbers. Owners in elevated regions like Johannesburg (1,750 m) or Denver (1,600 m) should expect approximately 3–5% lower figures than sea-level testing indicates.
Exhaust and Intake Modifications
A free-flowing exhaust system reduces backpressure and allows the supercharged engine to evacuate spent gases more efficiently. Headers, high-flow catalytic converters, and performance mufflers each contribute incremental gains. Similarly, a cold-air intake that reduces intake restriction improves volumetric efficiency. Combined, these supporting modifications can add 5–10% on top of the supercharger kit's baseline gains.
ECU Calibration
VT supercharger kits from AME Motorsport do not include ECU tuning. The kits are engineered to operate safely with the factory engine calibration, relying on the factory ECU's closed-loop feedback systems to adjust fuelling and timing automatically. Owners who pursue aftermarket ECU calibration from a qualified tuner can unlock additional power, but this falls outside the scope of the VT kit itself and should only be performed by experienced professionals.
Tyre and Wheel Combination
Larger, heavier tyres absorb more energy on the dyno rollers and produce lower measured figures. A vehicle running 33-inch all-terrain tyres will show lower dyno numbers than the same vehicle on 31-inch highway tyres, even though the engine produces identical power. This is why AME Motorsport standardises testing on the owner's actual tyre setup — the resulting numbers accurately reflect real-world performance.
Frequently Asked Questions
Are chassis dyno numbers lower than engine dyno numbers?
Yes. A chassis dyno measures power at the wheels after drivetrain losses, which typically consume 15–20% of the engine's output in a 4WD vehicle. Engine dyno figures measure output at the flywheel. AME Motorsport uses chassis dyno testing exclusively because it reflects the power that actually reaches the ground. When comparing numbers, always confirm whether the quoted figure is measured at the wheels (whp/wkW) or at the flywheel (bhp/bkW).
Will my results match these figures exactly?
Your results will fall within a similar range, but exact numbers depend on your specific vehicle's condition, mileage, fuel quality, altitude, tyre size, and ambient conditions. A well-maintained engine with fresh spark plugs, clean air filter, and quality fuel will produce results at the top of the expected range. Vehicles with high mileage or deferred maintenance may see slightly lower figures. AME Motorsport publishes these results as representative benchmarks, not guaranteed outcomes.
Do I need a tune with the VT supercharger kit?
No. VT supercharger kits from AME Motorsport are designed to work with the factory ECU calibration. The engine management system's closed-loop feedback adjusts fuelling and timing to accommodate the additional airflow. An aftermarket ECU tune can extract additional power beyond the kit's baseline results, but it is not required for safe operation, and ECU tuning is not included in VT kits.
How do I know the dyno facility is accurate?
Reputable dyno facilities calibrate their equipment regularly and use SAE or DIN correction factors to normalise results for atmospheric conditions. AME Motorsport tests on calibrated Dynapack and Mainline dynamometers. When comparing your results from a different dyno, ensure the facility uses the same correction standard. A 5–8% variance between different dynos measuring the same vehicle is normal and does not indicate a problem with either machine.
Do supercharger gains hold up at high altitude?
Positive-displacement superchargers deliver more consistent power at altitude than naturally aspirated engines. Because the Eaton TVS blower forces a fixed volume of air per revolution, it partially compensates for the reduced air density at elevation. You will still lose some power compared to sea-level testing — roughly 3% per 1,000 metres of elevation — but the supercharged engine retains a much larger percentage of its rated output than a stock engine does. This makes the VT supercharger kit particularly valuable for owners who live or drive at elevation.
Related Kits
Ready to see these numbers on your own vehicle? Browse the full range of VT supercharger kits from AME Motorsport: