BBR introduces an MX-5 Miata Stage 1 upgrade

BBR’s new Stage 1 package for the current Mazda MX-5 delivers huge output and performance improvements.

In standard guise, the roadster’s normally-aspirated 2.0 litre engine produces 157 bhp (118 kW / 160 PS) and 200 Nm (147 lb/ft) of peak torque. With the latest BBR modifications, those figures rise to 248 bhp (185 kW / 251 PS) and 320 Nm (236 lb/ft).

Mazda MX-5 (BBR Stage 1) (2017) Front Side

To achieve such colossal increases, BBR resorted to forced induction. According to the company, “Very early on during development it became clear that use of a supercharger, with its high parasitic losses, would work against the Mazda Skyactiv-G engine’s ultra-efficient ethos.

“Significant boost levels would be required to deliver considerable power gains with a supercharger, which would be incompatible with the Skyactiv-G engine’s high compression ratio.

“Therefore, having rejected all other forced induction methods, our extensive dyno and road testing has proven that our choice of a low back-pressure twin-scroll turbocharger, with its enhanced exhaust scavenging ability, is the optimal solution. It works harmoniously with the original Skyactiv-G layout and knock-resistant technologies, as is evident by the impressive power figures achieved at very modest boost pressures.”

As well as a TSX30-71R turbocharger, the conversion includes a carbon fibre heat shield, a bespoke cast iron manifold, a stainless steel downpipe, an aluminium air-to-air intercooler, Starchip / EcuTek RaceRom ECU recalibration and K+N’s Typhoon high-flow intake system.

Mazda MX-5 (BBR Stage 1) (2017) Engine

Consequently, the 0-60 mph (96 km/h) time drops to 5.0 seconds, while top speed is electronically limited to 155 mph (250 km/h). In other words, the turbocharged MX-5 is significantly faster than a stock Abarth 124 Spider.

BBR says that emissions remain MOT-compliant, plus CARB and TÜV approvals are being sought. Furthermore, the alterations are fully reversible.

In the UK, the Stage 1 upgrade costs £4,395 in DIY kit form, or £4,995 fully fitted (both prices exclude VAT). It’s also being offered in the USA via distributor Flyin’ Miata.

Of course, Stage 1 might not be sufficient for some MX-5 owners. For them, Stage 2 enhancements should be available later this year.

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