2018 Jaguar Xe Sv Project 8 95 1600X1200


Unleash The True Beast

Performance is our passion here at Swallows Racing and it truly shows, from our love of motorsport to our own projects, race cars and competition its easy to see why we put our heart and soul into everything we do here at SR.

We offer a huge range of Performance Tuning services that grow the capabilities of your vehicle whilst maintaining its class and poise, whether it be on the road or track your car is sure to perform at its best with Swallows Racing.

Tweak your Jaguar and enhance its capability to bring out the best in your beautiful machine, With our tuning packages developed through extensive testing on the dyno and real world you can be sure of ultimate performance.

What's more, with our in-depth expertise, gained first hand from racing on the UK's best known racing tracks with our own Jaguar race cars, we our committed to delivering high quality proven performance parts.


Check what your Jaguar can achieve with our Vehicle Registration performance lookup.

View VRM Performance Lookup View our Performance FAQs


Remapping is a software change where we modify the operating parameters in the vehicles ECU program or ‘map’. We do not change or add any hardware in your vehicle. In many cases the map stored on the ECU’s processor can be accessed via the on-board diagnostics port (OBD) in the vehicle, normally found under the dashboard. In some newer models the ECU will have to be removed from the vehicle and programmed on the bench.

Once one of our IMI professionally qualified technicians have read the vehicle they will upload the original map to the file writing team. During the mapping process they will adjust the parameters to maximise the performance, fuel economy, or a clever blend of both. Depending on the vehicle and ECU type the remapping process normally takes less than an hour, sometime longer if it needs to be programmed on the bench.

Performance Package Icon 1

SR Green

Designed to return an improved economy in turbo diesel engines. By re-characterising the torque limits on the engine, at lower rpm’s you will benefit from additional performance and improved economy.

At higher rpm’s the software will encourage shifting up through the gearbox, to keep the engine running in its optimal window.

Performance Package Icon 2

SR Blue

The most popular remap choice, offering the best mix of power and economy in virtually all turbo diesel engines. Designed to de-restrict the engine and open up the true torque and power range.

Swallows Blue offers a better driving experience while returning an improved fuel consumption figure. Parameters are carefully managed to optimise best burn times and achieve optimum pressures.

Performance Package Icon 3

SR Red

High Power & Ultimate Performance Designed to fully unleash the full potential of your engine. By enabling the power delivery to come late in the rev range the power is then in the optimum position for spirited driving on roads or track.

Swallows Red is recommended for use with petrol engines only and is specifically designed for performance only.


Custom Mapping

With custom mapping there is greater depth to the map by extending the perimeters one step further, level of mapping is bespoke to your engine and therefore ideal for modifications carried out to the full exhaust system and further forced induction options.

The ultimate mapping option for your for vehicle!

Our Key Performance services


We offer a range of bespoke performance packages to suit you and your vehicle. Our performance parts are developed in house and are at the leading edge, we are regularly developing further improvement on the road and on our Jaguar race cars, Take a look on our online shop for vehicle specific costs and modifications.

Kisspng Computer Icons Download Computer Software Icon Number 1 5Afdd6C8E034F5 4539147015265850329184


An SR remap that improves power, torque and economy coupled with our supercharger pulley makes up our Stage 1 kit. This package is our most popular one due to the amount of BHP that is increased for the smallest price package, this gives great new power figures and feels much more responsive on the road thanks to increased throttle response.

Number 2 Filled Icon 256


The SR Stage 2 package is our mid weight system that opts for the SR high flow centre section to be add and mapped bringing increased flow to the exhaust system by removing the most restrictive silencer in the middle of the vehicle, adding to the power advantage the roar of the system brings out the true noise and makes for a great package.

Icons8 Windows 8 Numbers 3 Black


The largest package availible. With a full SR 200 cell sports cats and valved back box accompanied with a map to take advantage of this unrestrictive performance gain, This makes you're vehicle a lot more powerful and more responsive on the road & Track as well as giving your the Cheshire Cat syndrome of a grin ear to ear from the exhaust note.

Icons8 Windows 8 Numbers 4 Black


The pinnacle of bolt on modifications in the form of a larger charge cooler, custom air intakes and live mapping on the dyno to achieve maximum performance from your engine with no internal modifications. The ULTIMATE performance package for power gains across the whole range and ideal for track use.


We offer a range of bespoke Handling packages to suit you and your vehicle. Our suspension parts are developed in house and we are regularly developing further improvements on the road and on our Jaguar race cars, Take a look on our online shop for vehicle specific costs and modifications.


Brakes are one of the most important supporting modifications when tuning your vehicle. You need to be sure that as well as accelerating faster, you can slow down just as effectively. We offer a range of bespoke braking packages to suit you and your vehicle from high performance braking parts that are developed in house, we regularly develop further improvements on the road and on our Jaguar race cars. Take a look on our online shop for vehicle specific costs and modifications.

Swallows Jag Track days

Why not Join us on one of our Jaguar track days!


Proud Partners Of Castrol Oils

Order online here
Instagram Image
Instagram Image
Instagram Image
Instagram Image
Instagram Image
Instagram Image
Instagram Image
Instagram Image

Check out our performance parts

Click below to see a list of our own performance parts in our online shop.

View Performance Parts

If you would prefer to talk over the phone Call 01934 750 319