Jaguar super-sedan picks up big power with a new pulley, intercooler exhaust and a tune.
The current Jaguar XJR with the supercharged 5.0-liter V8 is one mean luxury sedan. With stock power ratings of 503 horsepower and 461 lb-ft of torque, this big Jag has no problem keeping up with some of the top performance coupes in the world, but for those XJR owners who want to shorten the list of cars that can be their Jaguar, tuners, like VIP Design, have the answer.
In working with the team at Viezu Technologies, VIP created the Jaguar XJ tuning package, adding substantially more horsepower and torque with a price of roughly $10,000 US dollars. The two companies showcased that package in the video above from the Viezu YouTube channel and the results are impressive.
VIP Design Jaguar XJ Tuning Package
In working with Viezu Technology, VIP Design pieced together a fairly simple 650 horsepower upgrade package for the 2009-and-newer Jaguar XJR with the supercharged 5.0-liter V8. This package adds a full exhaust system including high-flow catalytic convertors, a smaller supercharger pulley for more boost, a larger intercooler, freer-flowing air filters and an ECU tune.
Based on the company’s data, this lifts the output of the supercharged V8 from 510 metric horsepower to 650 metric horsepower, or for those of you who prefer standard horsepower figures, we are looking at a jump from 503 to 641 horsepower. At the same time, torque figures climb from 627 nM to 824 nM, or in lb-ft, we are talking about an increase from 462 lb-ft to 608 lb-ft.
On the VIP Design website, this package has a list price of £7,995.00, which is a little over $10,000 US dollars based on the current conversion rate.
Dyno Action
In the video above, we watch as a Jaguar XJRlong-wheelbase model makes a pair of dyno runs. In the first run, the car is stock, making 501 horsepower and 627 nM of torque. We don’t know for sure, but those seem to be standard horsepower numbers at the crankshaft, as a stock XJR most certainly doesn’t make 501 horsepower at the wheels.
The second run shows the same car making another pull on the rollers with the VIP Design tuning package. On this run, the car is louder, but more importantly, it makes far more power. To be exact, this Jag lays down 643 horsepower and 824 nM of torque, so if that horsepower number is indeed standard, then this package actually offers a little more than 650 metric horsepower. For $10,000, that isn’t a bad deal for the big jump in power and sound.
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