Toyota GR Yaris
Tuning Guide
Every upgrade for the Gen 1 GR Yaris in one place: staged packages, parts we have chosen and priced, real lead times, and HAZ Motorsport tuning to tie it together.
See the Stage 2 packageAsk about tuning
Pick your stage
Two clear steps. Start with Stage 1 and move up later, or go straight to Stage 2.
Tune and breathe
- HAZ Motorsport Stage 1 tuning
- Performance panel air filter
- No other hardware needed
The full hardware package
- Carbon intake, downpipe, intercooler, dump valve and exhaust
- HAZ Motorsport Stage 2 tuning
- Hardware from £4,607.93
Stage 1
The first step for a standard car: HAZ Motorsport Stage 1 tuning with a performance panel filter.
Stage 2 around 320hp*
Five parts that work together, then HAZ Motorsport Stage 2 tuning. Choose a decat or a sports cat downpipe and the package total updates.
Carbon Fibre Intake Kit
Gloss or matte carbon
Decat Downpipe
Decat downpipe, GPF delete
Uprated Intercooler Kit
Front mount intercooler with boost hoses
Electric Dump Valve
Atmospheric or recirculating
Exhaust System with Carbon Tips
GPF-back system
*Power figures are estimates. Results vary with the dyno used, fuel, weather and the condition and specification of each car. Lead times are estimates from the date of order. All prices include VAT.
Downpipes that remove the catalytic converter or GPF are intended for track and motorsport use. A car without them will not meet UK road emissions requirements.
Other options for each part
Prefer a different brand or budget? Here are other parts we stock for the GR Yaris. Ask us to confirm fitment for your car before swapping one into a package.
Intake
- Eventuri carbon intake£1,344.00
- Airtec enclosed cold air intake£708.71
- MST Performance intake£472.51
Exhaust
- Cobra Sport cat back£1,275.00
- Remus GPF-back, chrome tips£1,160.36
- Scorpion GPF-back, carbon tips£1,082.61
Intercooler
View all parts we do for the Yaris GR
Brakes, suspension, cooling, mounts, filters and more, all matched to the GR Yaris.
Servicing
A tuned engine works its oil harder, so fresh oil matters more. Our GR Yaris oil service kit puts everything for an oil change in one box.
GR Yaris Oil Service Kit · from £101.99
Oil filter, new sump plug with seal and 5 litres of Motul 5W-40. Fits Gen 1 and Gen 2. Choose Motul 8100 Power (£104.99) or Motul 300V Competition (£139.99); each is £3 less without the sump plug.
View 8100 Power kit View 300V kitToyota's handbook oil grade for this engine is 0W-20. These 5W-40 kits are aimed at mapped and hard-driven cars, so check which suits your car before you order.
More servicing: engine oil service kits · gearbox and diff service kits
Worth considering
Organic Clutch Kit · £599.99
Not essential on day one, but something to consider in the future. Whether you need it depends on your driving style and how hard a life the standard clutch has had.
View partAlso available with a new release bearing for £749.99. Worth doing at the same time, as the gearbox is already out.
View with release bearingHAZ Motorsport tuning
Stage 1 and Stage 2 tuning for the Gen 1 GR Yaris, matched to the hardware on your car. Tell us what is fitted and we will come back with a price and the next available date.
Tell us your registration, the stage you want and what is already fitted.
Gen 1 GR Yaris, Stage 2
An example of how a typical Stage 2 order comes together, using the parts on this page.
Questions
Why "around 320hp*" and not an exact number?
Every dyno reads differently, and fuel, weather and the condition of the car all change the result. We quote a realistic target, not a best-case figure.
Decat or sports cat?
The decat is the lower cost option and is for track and motorsport use. The sports cat keeps a catalyst and costs more. Both remove the GPF.
Do I need the clutch?
Not necessarily. It depends on your driving style and how the standard clutch has been treated. Many owners fit it later.
Does this fit the Gen 2 GR Yaris?
This guide covers the Gen 1 car. Many parts are generation specific, so ask us before ordering for a Gen 2.
How long will it take to arrive?
Each part shows its own estimated lead time. The longest in the Stage 2 package is around 3 weeks.
*Power figures are estimates and vary with dyno, fuel, conditions and vehicle. Images are for illustration.