TOYOTA SUPRA Mk5 (A90)

On the 3.0 B58, most owners start with an ECU tune, an intake and a cat-back or valved exhaust, then add an upgraded heat exchanger to control intake temperatures. Lowering springs or wheel spacers improve the stance, and a wind deflector is a popular comfort fix. Plan the order around how you use the car: a road car benefits most from the tune and sound, while a track car needs cooling, brake pads and fluid first.

Yes, but Supras manufactured from around mid-2020 have a locked ECU. The ECU usually needs to be unlocked by a specialist before flash tools such as MHD or bootmod3 can load a map. Earlier cars can often be flashed directly. Check your build date on the door sticker, and use a reputable tuner who can confirm the unlock, map and any supporting hardware your car needs.

The A90's B58 responds well to tuning, and owner forums report sizeable gains on the stock turbo with a good map and supporting parts. As output rises, the limits are typically fuel delivery and heat rather than the turbo alone, which is why upgraded heat exchangers, fuel system parts and upgraded turbos appear on bigger builds. Results vary with fuel quality and climate, so be cautious of headline figures and get advice before going beyond a stage one map.

Lowering springs keep the factory dampers, so the Adaptive Variable Suspension continues to work as normal. Coilovers that replace the electronically controlled dampers will trigger fault codes unless a cancellation kit is fitted, such as the electronic damping cancellation kit offered by KW. Either way, have a four-wheel alignment carried out afterwards. Each suspension product on our site states whether it suits adaptive or passive cars.

Many mechanical parts cross over, because the A90 Supra and G29 Z4 share the platform, the B58 and B48 engines and the ZF eight-speed gearbox. Intakes, heat exchangers, engine internals, some suspension and some brake parts are often shared, but body panels, aero, interior trim and some exhaust sections are model-specific. Always check the listed fitment rather than assuming a Z4 part fits.

Fitting aftermarket parts does not automatically cancel a UK warranty, but a manufacturer can decline claims for faults it can link to a modification, and ECU remaps are the most likely to cause disputes. Toyota's extended Relax cover also depends on servicing within the Toyota network. Speak to your dealer, keep receipts for parts and fitting, and tell your insurer about every modification.