Upgrades & tuning
Performance packages, parts and fitting for any car. Developed and tested at The Mill, from a first stage 1 map to 2,000 bhp+.
GT-R tuning stages
We’ve been developing R35 tuning since 2008. Each stage builds on the one before. Ask us for today’s price.
Stainless steel Y-pipe, ECUTek engine licence and SVM custom map.
590 bhpAdds the SVM 102 mm stainless steel exhaust and K&N drop-in filters.
610 bhpAdds K&N large cone filters, ECUTek gearbox licence and SVM 76 mm MAF pipes.
615 bhpAdds ASNU 1050 cc injectors.
640 bhpAdds downpipes: de-cat (off-road use only) or sports cat. Our most popular package.
660 bhpAdds the SVM Stage 1 IHI turbo kit.
Ask usBig-power builds, planned around your goals and budget.
2,000 bhp+Want something more personal? Tell us your goals and budget and we’ll put a package together.
GR Yaris packages
Our own developed and tested hardware. Your original ECU stays in place: no lost functions, no warning lights.
SVM 9-injector system
- 3 extra 660 cc injectors and new SVM fuel rail
- Fuel line upgrades and 3-bar MAP sensor
- SVM/ITG panel filter and SVM intercooler
- DB/SVM custom ECU control unit
- SVM turbo-back high-flow exhaust and sports cat
SVM hybrid turbo package
- SVM Hybrid V2 quick-spool turbo kit with uprated actuator
- Race-spec SVM intercooler, 85% bigger than standard
- SVM high-flow fuel pump and uprated regulator
- Uprated valve springs and retainers, 4-bar MAP sensor
- Full rolling road mapping session and SVM set-up
We also fit brake pads, lines and fluid, BC coilovers, camber bolts, geometry alignment, ITG induction kits and Syvecs 4WD controllers.
Ford, Audi, JDM & more
If it’s fast, or you want it to be, we can help.
Ford Focus ST & RS Mk3
Mapping, intakes, exhausts and supporting upgrades.
Audi RS6 C7
Performance upgrades and servicing for the C7 RS6.
Nissan 370Z & 350Z
Upgrades and servicing for Nissan’s Z cars.
Anything JDM
And Porsche, BMW, Mercedes, Ferrari, Lamborghini and more.
Your goals, your budget
No job is too complicated for our team. Whether it’s a fast road car, a sprint championship car or a drag build, we’ll plan the parts, fitting and mapping with you.
We can collect your car in our enclosed trailer and keep you updated as the work goes on.
Tuning questions
Which cars do you tune?
We specialise in the Nissan R35 GT-R and Toyota GR Yaris, and also tune the Ford Focus ST and RS Mk3, Audi RS6 C7, Nissan 370Z and 350Z and anything JDM, plus Porsche, BMW, Mercedes, Ferrari and Lamborghini.
How much power can you make from an R35 GT-R?
Our GT-R stages run from 590 bhp at Stage 1 to 660 bhp at Stage 4.25, and our big-power builds go to 2,000 bhp and beyond. Ask us for today’s price for each stage.
Will my GR Yaris keep its original ECU?
Yes. Our GR Yaris packages use our own developed and tested hardware, and your original ECU stays in place, so there are no lost functions or warning lights.
Can you collect my car for tuning?
Yes. We collect and return cars anywhere in the UK in our enclosed trailer, fully insured, and keep you updated as the work goes on.
How do I get a price for an upgrade?
Call us on 01952 583917 or email sales@severnvalleymotorsport.co.uk with your car and what you want from it, and we will put a package together for your goals and budget.
What our customers say
“Have been using Severn Valley for over 9 years. I cannot once remember having been let down in any way by them. I highly recommend them for all your R35 servicing and performance needs.”
Ifty
“Had my GTR go to SVM for their stage 1 package, full service, gearbox and diff oils change, alignment. My car was collected within 24hrs in their enclosed trailer and progress updates started coming in the very next morning. My GTR will be going nowhere else.”
Ahmed
“Took my Porsche 911 Turbo to SVM after another garage hadn’t fitted a new set of brakes correctly. They explained what the problem probably was before they saw the car, and were proved right. They also fitted new turbo actuators, a new front radiator and coolant, and reset the boost. It’s running the best it ever has.”
Brent
“Thank you to the team at Severn Valley Motorsport for helping my husband win the Litchfield Sprint Series Championship in his Nissan GTR. This would never have happened without their dedication and support.”
Mary
Ready for more power?
Tell us about your car and what you want from it.