Holden/HSV Performance
HSV LSA Upgrade Stages
Stage 1 – Baseline Flow
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Harrop high-flow airbox
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Custom dyno calibration
Stage 2 – Boost & Reliability
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Harrop high-flow airbox
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Harrop boost pulley
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Solid blower-drive coupling
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160 ° F (71 °C) thermostat
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Custom dyno calibration
Stage 3 – Air, Fuel & Cooling
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Harrop high-flow airbox
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Harrop boost pulley
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Solid blower-drive coupling
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160 ° F (71 °C) thermostat
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FI LSA lid spacer
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High-flow injector upgrade
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Performance full exhaust system
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Custom dyno calibration
Stage 4 – Cam & Exhaust Power
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Harrop high-flow airbox
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Harrop boost pulley
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Solid blower-drive coupling
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160 ° F (71 °C) thermostat
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FI LSA lid spacer and manifold spacer
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High-flow injector upgrade
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Coretuned LSA camshaft upgrade
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Powerbond LSA overdrive balancer
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Performance full exhaust system
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Optional supercharger porting
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Optional throttle body upgrade
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Fuel pump voltage booster (dependant on options)
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Custom dyno calibration
Each stage builds on the last, delivering smooth, reliable gains while maintaining OEM-level drivability.
V8 Holden VT–VZ Upgrade Stages
Stage 1 – Intake & Tune
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VCM OTR (plastic or alloy) MAF-less intake
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Custom dyno calibration
Stage 2 – Exhaust & Tune
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VCM OTR intake
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Tri-Y or 4-into-1 headers
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High-flow catalytic converters
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Twin 2.5-in or 3-in exhaust system
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Custom dyno calibration
Stage 3 – Street Cam Package
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Stage 2 hardware
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Coretuned custom camshaft kit
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Custom dyno calibration
Perfect for stock auto or manual gearboxes, smooth drivability with that classic cam idle.
Stage 4 – Aggressive Cam Package
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Stage 2 hardware
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Coretuned custom camshaft kit (aggressive profile)
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Custom dyno calibration
Designed for manual or high-stall auto transmissions, crisp street manners with a rowdy idle and maximum naturally-aspirated power.
Stage 5 – CNC Head & Cam Package
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VCM OTR intake
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4-into-1 headers
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High-flow catalytic converters
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Twin 3-in exhaust system
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Coretuned custom camshaft kit
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Coretuned CNC-ported cylinder heads
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Custom dyno calibration
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High stall for auto cars
The ultimate NA or boost-ready combination, CNC heads and matched cam unlock exceptional flow for serious performance.
V8 Holden VE–VF Upgrade Stages
Stage 1 – Intake & Tune
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VCM OTR intake kit
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Fascia and infill panels
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Custom dyno calibration
Stage 2 – Exhaust & Tune
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VCM OTR intake
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4-into-1 headers
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High-flow catalytic converters
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Twin 3-inch full exhaust system
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Custom dyno calibration
Stage 3 – Street Cam Package
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All Stage 2 hardware
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Coretuned custom camshaft kit
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Custom dyno calibration
Ideal for stock auto or manual transmissions, smooth drivability with that sought-after cam idle.
Stage 4 – Aggressive Cam Package
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All Stage 2 hardware
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Coretuned aggressive camshaft kit
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Custom dyno calibration
Suited to manual or high-stall auto setups, crisp street manners, racier idle, and maximum naturally-aspirated output for a stock bottom end.
Stage 5 – CNC Head & Cam Package
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VCM OTR intake
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4-into-1 headers
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High-flow catalytic converters
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Twin 3-inch exhaust system
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Coretuned custom camshaft kit
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Coretuned CNC-ported cylinder heads
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Custom dyno calibration
The ultimate flow upgrade for serious NA or boosted builds, heads and cam matched for exceptional power and torque.
V6 Holden VE–VF Upgrade Stages
Stage 1 – Intake & Tune
Expected gain: ≈ 20–30 rw kW
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Orrsom or VCM OTR intake
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Infill panel
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Custom dyno calibration
Stage 2 – Intake, Exhaust & Tune
Expected gain: ≈ 25–35 rw kW
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Orrsom or VCM OTR intake
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Infill panel
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Hurricane cat-back exhaust
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Custom dyno calibration
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Optional headers and cat upgrade
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Looking for bigger numbers? We also offer tailored camshaft, supercharger, and turbocharger packages—contact us for a personalised quote.
Forced-Induction Upgrades
Supercharging
As an authorised Harrop dealer, Coretuned supplies and installs the full Harrop supercharger line. Need something unique? We can custom-fit these systems to engine-swap projects and conversion cars, we also install Walkinshaw , Magnuson and Whipple units for a turnkey solution that suits your goals.
Turbocharging
Whether you want a proven bolt-on kit or a completely custom build, Coretuned delivers turbo packages for every power level. Our in-house team fabricates manifolds, intercooler pipework, and exhausts to ensure flawless fitment and OEM-grade reliability. Talk to us about a tailored turbo system engineered around your vehicle and performance targets.
