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480HP on Pump Fuel: The Ultimate MX-5 Engine Setup

This MX-5 project represents everything we stand for at Hummelink-Modifications: performance without compromise, built with precision and purpose. Powered by a stroked VVT engine and boosted by a Garrett G25-550, it delivers a brutal 480 horsepower and 527Nm at 2.0 bar, running on 98RON pump fuel.

At the heart of this MX-5 build is a precisely engineered 1.8L VVT engine, stroked to 1951cc for increased displacement and torque.
The bottom end is built around a Maruha 87mm stroker crank, Wössner 84.5mm forged pistons, and Manley rods, all locked down with Mazworx billet main caps and ARP studs.
A Boundary high-flow oil pump paired with a Skidnation oil baffle ensures consistent and reliable lubrication under pressure.
Up top, the cylinder head is fitted with Supertech +1mm Inconel exhaust and intake valves, Catcams valve springs, and Apex Torque head studs. The ported head breathes through a Skunk2 Ultra intake manifold, custom DBW throttle body, and Pipercross filter.
Fuel is delivered via a Radium fuel system and a high-capacity Walbro 525 LPH pump.
The boost setup centers around a Kraken low-mount kit with a Garrett G25-550, full 3” V-band exhaust, and Turbosmart GenV wastegate + Raceport BOV for precise boost control.
It’s all managed by an ECU Master EMU Black, integrated with a complete sensor package, custom harness, and even digital dash integration — bringing modern functionality like cruise control into the mix.

Cooling is dialed in with a Flyin' Miata crossflow radiator, BOFI Racing intercooler, custom reroute setup, and a 19-row oil cooler — ensuring thermal stability no matter the use case.
Putting power down is a BMW 6-speed gearbox (via SPS swap kit), linked to an MFactory 3.30 differential and reinforced drivetrain components.
The chassis is fully refreshed with powdercoated subframes, Skidnation polyurethane bushings, Whiteline anti-roll bars, and BC Racing coilovers, with additional bracing from Beatrush, UltraRacing and Skidnation to tie it all together.
Built with a perfect mix of comfort and chaos, this is more than just a spec sheet — it's a street-capable track weapon, ready for the daily, the weekend, and the race.


More detailed photo's: here

full speclist:

Engine Block
84,5 x 87mm 1951cc bottom end with:


  • Maruha 87mm stroker crankshaft
  • Wössner custom pistons 84.5mm
  • Manley forged connecting rods
  • Mazworx billet main caps
  • ARP main studs
  • ACL crankshaft/rod bearings
  • Boundary BP-S2 high-flow oil pump
  • Skidnation oil baffle (racing)
  • Fluidampr damper


Cylinder Head

  • Supertech +1mm Inconel exhaust valves
  • Supertech +1mm Hi-Flo intake valves
  • Catcams valve springs
  • Ported head
  • Apex Torque head studs
  • Cometic 85mm head gasket


Intake System

  • Skunk2 Ultra Series intake manifold
  • NC DBW throttle body + custom flange
  • Custom intake + heatshield
  • Pipercross C-Series filter


Fuel System

  • Radium fuel rail
  • 1600cc injectors
  • Radium adjustable fuel pressure regulator + adapter
  • Turbosmart fuel pressure gauge
  • Walbro GST450 fuel pump
  • Radium high-flow fuel filter (Micronglass)
  • Full AN fuel plumbing and quick connects
  • Flex Fuel sensor + full e85 resistant lines


Turbo System

  • Kraken 1.8 low-mount turbo kit
  • Garrett G25-550 turbocharger
  • Full 3" Kraken exhaust system
  • Turbosmart GenV IWG twinport wastegate
  • Turbosmart Raceport sleeper BOV
  • Cerakoted turbine housing & manifold + wrapped downpipe
  • 0.72A/R turbine housing for G-series turbo


ECU & Additional sensors

  • ECU Master EMU Black
  • ECU Master 7" ADU Rev. 2
  • ECU Master CAN keypad 10
  • ECU Master GPS to CAN
  • ECU Master CAN to USB
  • ECU Master EDL-1 Logger
  • Custom full engine wiring harness
  • 36-2 trigger wheel
  • Hummelink VVS sensor kit
  • Hummelink R8 VVT Billet coil on plug kit
  • Hummelink MAC 4-port boost solenoid kit
  • Flex Fuel sensor
  • DBW throttle body
  • ECU Master Oil temperature/pressure sensor
  • ECU Master fuel pressure sensor
  • Bosch Knock sensor
  • EGT Sensor


Engine Accessories

  • Gates Racing timing belt kit
  • SKF water pump
  • Skidnation engine mounts
  • Red metallic valve cover with AN10 breather system
  • Hummelink Waterneck Delete Block-Off Plate Kit for MX-5 Miata NA NB
  • Hummelink Timing Belt Cover Set for Mazda Mx-5 Miata 90-05
  • Hummelink Engine Bolt Kit Mazda Mx-5 Miata NA NB
  • Hummelink Miata Exhaust Manifold Nut Set


Cooling System

  • Oil cooler 19 row
  • Hummelink Coolant hoses & reroute
  • BOFI TR11 560HP intercooler kit
  • Flyin’ Miata Koyorad crossflow radiator + Stage 2 fan setup
  • Custom Fan shroud design & fabrication


Fabrication & Extras

  • Hummelink AN10 Catchcan / Breathertank for NA NB Mazda Mx-5 + braided lines
  • Custom radiator fan shroud for Brushless Spal fan + oil cooler
  • AN10 turbo drain welded to pan
  • EGT bung
  • All new cunifer brake lines + fittings
  • Hummelink rear exhaust heatshield
  • Custom Coolant reroute
  • Custom undertray


Drivetrain

  • SPS BMW gearbox swap kit
  • BMW DZ 6-speed gearbox
  • MFactory 3.30:1 ring & pinion gearset
  • Hummelink Billet diff spacer block
  • ARP flywheel bolts
  • Rebuilt diff with new bearings, seals
  • Custom solid pinion spacer + shims


Suspension & Chassis

  • Powdercoated front & rear subframes and arms, NB front subframe + steering rack
  • Skidnation poly bushings (NA rear, NB front)
  • Grease fittings
  • GC Fabrications doorbars
  • Whiteline adjustable sway bar kit
  • R-Theory ARB reinforcement blocks
  • Ultra Racing Frog Arms
  • Wilwood speed bleeders
  • New Front & rear wheel bearings + hubs
  • New Upper ball joints
  • New Tie rods
  • all new OEM subframe bolts + axles
  • Hummelink Reinforced Billet Differential Spacer Block for Mazda Mx-5 Miata NA/NB
  • Beatrush PPF brace (previously installed)
  • Skidnation butterfly brace (previously installed)
  • BC racing coilovers (previously installed)