BBR'S PORTFOLIO OF MX-5 CONVERSIONS continues to grow with this, a supercharger kit for the 2-litre 'ND' (MK4) car in its original, 158bhp form, as built from 2015 to 2019. BBR is working on an installation for the later, 181bhp ND models too, but for the 158bhp engine the kit is available in two stages of tune: Stage 1 being the core and Stage 2 improving the engine's breathing to liberate even more horsepower and torque.
The heart of the conversion is the fitment of a Rotrex C30-94 supercharger - and very neat it looks too under the bonnet, where you'd be hard-pressed to notice this is a modified car and not as it left the production line. The kit includes an oil cooler, intercooler, and K&N air filter, along with a long list of smaller parts, and is governed by a new map for the engine's ECU. The result is 'at least' 220bhp (BBR quotes this figure as a minimum, with 225bhp expected) joined by 200lb ft of torque (up from 147lb ft) delivered on a plateau between 3750 and 5750rpm. A glance at the power and torque curves plotted on a graph suggests the characteristics of the standard engine have been retained, but with simply more of everything, everywhere.
Moving to Stage 2 means adding BBR's stainless steel exhaust, from the 4-1 manifold via the sports cat to the rear silencer and tailpipe. This liberates 240-250bhp in total, with 220lb ft of torque, plus you can add a larger Forge Motorsport intercooler if you're really going to push the car hard in high ambient temperatures, such as at a summer trackday.
Denne historien er fra April 2023-utgaven av Evo UK.
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Denne historien er fra April 2023-utgaven av Evo UK.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
BEST BUYS BMW M CARS
THE PERFORMANCE CAR LANDSCAPE WOULD HAVE looked very different over the last five decades without BMW. Its M division, founded in 1972, has produced some of the best driver’s cars ever to hit the road, and in the process has provided a stream of benchmark models for its rivals to chase. In recent years, stricter emissions regulations, downsizing and electrification have seen some of those rival cars falter, yet by and large BMW’s M machines have remained strong. In fact, some rank among the greatest the department has made think of the eCoty-winning M2 CS and M5 CS while others are the only options worth recommending in their respective segments. Price tags have risen with performance, however, putting those latest offerings out of reach for many, but the marque’s popularity means there are numerous earlier M models available on the second-hand market for far more attainable figures. Here are four of our favourites.
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TOY STORY
Where best to store some of Toyota’s most prized and valuable racing superstars? Under the wind tunnel at its Cologne HO, of course...
POWER PLAY
It develops 819bhp. It has no turbochargers, no hybrid assistance. Ferrari describes it as the most complete GT it's ever made. And it’s so proud of its mighty V12 engine it’s named the whole car after it. This is the 12 Cilindri
THE FIRST SAMURAIS
Japan has been responsible for many of our favourite driver's cars of recent decades, but their ancestors are often much less well known. We take a look at where the big manufacturers began their performance car journeys
DEFINITELY. NO MAYBE
Three Japanese performance icons - Lexus LFA, Subaru Impreza 22B and Nissan GT-R. Over three days on some of our favourite roads we explore what makes each uniquely thrilling, but also the car culture that unites them
1V3.0
F1, P1... and now W1. The next chapter in McLaren's Ultimate Series is the British firm's challenger to the forthcoming new Ferrari hypercar and a £2million, 1257bhp, hybrid-powered, technical tour de force
Thornley Kelham European RS
One man’s dream to build the perfect Porsche 911 has resulted inthis aaticMously restored and enhanced classic. We delve into the details and take it for a drive
Bentley Continental GT Speed
The new Continental GT is the most powerful Bentley ever, and the beginning of anew plug-in hybrid era for Crewe. But is it still a benchmark grand tourer?
