How much HP does Stage 2 add?
Sarah Cherry
Published Feb 19, 2026
How much HP does Stage 2 add?
Stage 2 and Stage2+BigSF produce peak gains of +19%HP / +40% TQ over stock and maximum gains of +110% HP / +110% TQ over stock when using 93 octane fuel.
How much HP can a stock STI handle?
They will hold up to 400 whp (again as shown in our PPIHC car), but if you want to push up to or beyond that power level, a set of aftermarket H-Beam rods would be recommended.
What is Stage 2 tuning Subaru?
The COBB Stage 2+Big SF Power Package is a simple bolt-on and tuning solution that will allow you to maximize the power output of your 2015+ WRX 6MT! The heart of this package is the Accessport V3. It also provides increased airflow from a 3″ Stainless Steel Turboback exhaust and Big SF Intake & Airbox combo.
How much wheel HP does an STI have?
Today’s WRX STI uses the venerable EJ25 turbocharged 2.5-liter and makes 310 hp and 290 lb-ft in standard trim.
What is stage 2 on a STI?
The GrimmSpeed Stage 2 Power Package is a well-rounded kit, offering increased power and torque output thanks to reduced restriction before and after the turbo, as well as a more aggressive street presence thanks to the intake and exhaust tones.
What Is a Stage 2 tune STI?
Our Stage 2 reflash smooths out the entire band, offers a linear power curve and improves the low-end torque and response while maintaining a very powerful, consistent and reliable tune.
How much HP does a Stage 3 STI have?
COBB shows that Stage 1 adds about 20 hp and 60 lb-ft of torque with just the COBB AccessPort and a panel filter; Stage 2 adds 65 hp and about 75 lb-ft over stock with COBB’s new EcoStang intercooler system and recommended cat-back exhaust; and Stage 3 finds a whopping 81 hp and 80 lb-ft of torque with a required turbo …
How much HP can a 2006 WRX handle?
The stock bottom end on a WRX can safely handle anything under 300whp which equals about 380 or so to the motor or less… after that, it’s on borrowed time.
What do I need to run Stage 2?
The required hardware for their stage 2 software includes a full turbo-back exhaust with a sports-cat and a high-flow air intake. They also recommend an uprated intercooler, uprated engine mounts, and an uprated throttle pipe.
How much HP does a 2020 STI have?
310 hp2020 Subaru WRX STI / Horsepower
How much horsepower does a 2010 STI have?
305 hp2010 Subaru Impreza WRX STI / Horsepower
What is a Stage 3 STI?
The Stage 3 Power Package for STI Includes: COBB Accessport, SF Intake System, SF Airbox, SS 3″ Downpipe, Cat-Back Exhaust, SS Turbo Heatshield, AEM High Flow Fuel Pump, Top Feed 1050x Fuel Injectors, Fuel Rails, Fuel Rail Line Kit, Fuel Pressure Regulator for Fuel Rail Kit, Subaru Throttle Body Coupler, Silicone Turbo …
