If you happen to seek a Jaguar JXR review that labels the biggest cat in the line-up as underpowered you're going to have a hard time. Even so, certain XJR drivers feel the need for more grunt, as is the case with the luxury sedan seen here.
The owner of this Jag turned to British aftermarket specialist Viezu, which gifted the supercharged 5.0-liter V8 under the hood a bit of attention. To be more precise, the blown engine was gifted with an ECU remap, as well as gaining a sports exhaust. As a result, the four-door now allows the one in the driver seat to control 650 ponies.
Packing 200-cell sport catalytic converters, the new exhaust hardware not only sees the motor to breathing freely, but it also delivers an impressive range of aural treats.
As for the torque value of the massaged supercharged 5.0-liter V8, the tuner didn't mention this, mentioning that the lavish vehicle now packs more twist than a Lamborghini Aventador.
While we're at it, we'll also mention the Aventador will see its 509 lb-ft peak torque (that's 690 Nm) upgraded, since Sant'Agata Bolognese is preparing to introduce the facelifted incarnation of the supercar - here are the latest spyshots of the beast.
Sure, Viezu may have recently had such a V12 Raging Bull in its shop, as its Facebook page shows, but comparing a forced-fed engine to a naturally aspirated one regarding maximum torque still seems like a cheesy move to us.
Regardless, Viezu provided a short clip that allows us to see the XJR stretching its mechanical legs on the dyno. And we have to admit the hefty feline delivers an overly pleasing scream.
Head over to the "play" button below to check out the XJR's dyno room adventure and remember to turn up the volume for this brief adventure.
In his quest to bring you the most impressive automotive creations, Andrei relies on learning as a superpower. There's quite a bit of room in the garage that is this aficionado's heart, so factory-condition classics and widebody contraptions with turbos poking through the hood can peacefully coexist. Full profile
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