MX5 — Stage 2 ECU Tune
- 99% increase in power output
- 124% increase in torque delivery
- Improved boost control at 14 psi
- Enhanced fuel system response
- Optimized engine management calibration
- Increased overall performance capability
Classic NB MX5 fitted with an Evo X high-flow turbo and standalone Vipec V44 management. The platform gives full control over ignition, fuelling, and a three-port boost solenoid, which we've set to hold 0.96 bar on 98 RON. Supporting hardware includes upgraded injectors and a high-pressure fuel pump to keep up with demand at the top end.
The calibration delivered 179 kW at the wheels from a starting point of 90 kW—a gain of 89 kW. Torque lifted from 64 Nm to 143 Nm. We've tuned for closed-circuit use, with a focus on midrange response and repeatable power under load. The Vipec platform made fine-tuning straightforward, especially around transient throttle and boost cut points.
This setup shows what's achievable on a BP with the right turbo choice and fuelling strategy. No drama, just clean power delivery for track work.
Why the Vipec V44 over a piggyback or reflash?
The BP in this MX5 is naturally aspirated from factory. A standalone like the V44 gives full control over every map—boost, ignition, fuel, and protection strategies—necessary when adding a turbo of this size.
Is 0.96 bar conservative for this hardware?
It's a sensible ceiling on 98 RON with the Evo X turbo. The unit flows well at this pressure without pushing the engine beyond safe knock margins or stressing the head gasket.
What's the torque figure recorded—64 Nm seems very low?
That's the figure supplied by the workshop. It may reflect a partial baseline pull or unusual dyno reference point. The 143 Nm post-tune is consistent with this boost level and injector duty.
Workshop & Dealer Access
Protunes supplies ECU calibration files exclusively to approved workshops, tuners, and dealers throughout Australia. Platform: Vipec V44.
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