Want to push more power from your VA Subaru WRX STI? The best place to start is with the PBMS Stage 1 Package
A Stage 1 Upgrade Package is the first step in increasing power through a simple and effective Tune Package & ECU reprogramming.
VA WRX STI Upgrade Package - Stage 1 Includes:
How does the Stage 1 Power Package increase power?
The factory Subaru Tune is programmed to run a stock engine with emissions in mind. With a completely new engine setup, we apply a custom tune calibration to suit your exact setup, ensuring this caters to your specific performance goals & the age/condition of your engine.
Additionally, Subaru's ignition timing control strategy can create a slightly inconsistent and slightly jerky power band. A PBMS tune package will fix this and give you incredibly consistent, smooth and safe power.
Note: This is a physical service that must take place at Possum Bourne Motorsport in Pukekohe, Auckland. We require the vehicle for approx. 2 business days to complete this service thoroughly and often have a 2-4 week lead time so, please contact us prior to purchasing if you would like to confirm a time. If no time is confirmed prior to purchase you may not be able to get the date you required.
Benefits Stage 1 Power Package
- Increased power and torque - typically 25kW / 15% more than stock through the whole power band
- Improved throttle response
- A smoother power band and optimised drivability
- Tuned for current NZ fuels making for a safer and more reliable tune for modern fuel. See fuel rating information.
- Removal of any fault codes for removed or disabled systems (typically emission control related - see air pump removal information)
- Removal of any speed cuts (please request when dropping off)
- Custom calibration on our in-house dyno to suit your engine, engine condition and any specific modifications or requests you may have. See the PBMS 9-Step Tuning Process.
Compatibility
This is compatible with Subaru WRX STI VA Sedan 2.5L models from 2014 to 2021. We offer similar packages with minor variations to suit all NZ & JDM vehicles, 2L, 2.5L, manual & automatic. We can offer this service on a huge range of vehicles, contact us if you can not find your vehicle using the vehicle selector.
Not sure what model STI you have? Check out our blog article on identifying what version WRX you have.
Recommendations & Upgrade Options (Not included in price)
- We recommend completing any other modifications you desire BEFORE a PBMS Tune Package
- We recommend the vehicle is serviced, maintained and in good working order prior to the PBMS Tune Package. PBMS can complete any additional work as required. PBMS can perform any service work required. If you are going to have the oil changed else-where, please contact us to choose the correct oil for a high-load performance application.
- We recommend heat wrapping the downpipe to keep the steering and body of the vehicle protected from heat. Click here for pricing - includes labour.
- Consider upgrading to an EcuTek tune for additional tuning features.
- EcuTek Race Rom for features such as launch control, flat foot shifting & anti-lag (Included free of charge if EcuTek licence purchased with Stage 1 Package). Additional Bluetooth ECUTEK ECU Connect kit can be used to adjust settings and monitor performance.
- E85 Flex Fuel upgrade package - Contact us for further information.
- Upgrade to a Link Plug In ECU to take your vehicles tune to the next level.
- Before dyno run to give you a true power comparison against your stock power level. Click here for pricing.
- Oil catch can or Air Oil separator to capture the oil vapours that occur as a result of the higher power levels produced. Click here for options.
Next steps (Not included in price)
Once you get a taste for power, you may find yourself wanting even more! We have developed a series of upgrade stages to allow you further performance upgrades. You can purchase the parts online to fit yourself or have PBMS fit the parts for you. Please note that every additional modification that changes the engine flow (intake or exhaust related) or fuel delivery (injectors or fuel pump) requires a re-tune to suit.
Not enough power for you? We've check out our other power upgrade packages:
Stage 2 - Decrease exhaust back-pressure in the most restrictive part of the system
- Stage 1 Plus the following
- High flow downpipe and adapter 3 inch
- Fuel pump upgrade
- Fuel filter replacement
- One step colder spark plugs
Stage 3 - Increase exhaust flow and note with cat-back exhaust system
- Invidia R400 Cat-Back Exhaust System 3 inch
Stage 3+ - Increase intake flow and induction noise with a cold air intake kit
- Stage 3 Plus the following
- Process West Cold Air Intake 76mm (Large) w/ K&N Filter
Stage 4 - Takes power and track capability to the next level with a Turbo upgrade and complete fuel system overhaul/
- Stage 3+ Plus the following
- Perrin Turbo Intake Pipe - Black (can be optioned in Red or Blue by special request)
- TGV Delete Housings
- Stainless Steel Headers unequal length and up-pipe (can be optioned in equal length by special request)
- Injector Dynamics ID1050X Subaru Injector Kit
- Blouch 2.5 XTR Turbo Upgrade
- PBMS Boost Control Solenoid
- PBMS Spec Service as required when fitting a replacement turbocharger
- Motul Sport 5w40 Engine oil designed for high-power modified street engines and genuine Subaru oil filter
Stage 4+ - Increase cooling capacity and power consistency with a front mount intercooler.
- Stage 4 Plus the following
- Process West Front Mount Intercooler Kit with Black Intercooler Core (can be optioned with Silver intercooler core or more responsive/less peak power top mount intercooler kit by special request)
G4X Upgrade Package - A Link Plug In ECU upgrade can be added to any stage. Allows advanced tuning, Motorsport and engine protection features.
Stage X - E85 Conversion (can be applied to any stage to increase power, torque and turbo response by approx. 15-25%). Contact us to arrange a consultation today.
Motorsport / Custom - We can customise a package to suit your performance and motorsport needs including PBMS built engine & Twisted turbo system. Contact us to arrange a consultation today.
