Can you use E85 in a WRX?

At minimum to run E85 you will need upgraded fuel injectors, upgraded fuel pump, and tune on the EJ engine 2002-2014 WRX, 04-current STI, 05-12 LGT/OBXT, and 04-13 FXT. On the FA engine (2015+ WRX) you will need an upgraded in-tank fuel pump and a tune.

Can you put E85 in a Subaru?

No, it will not. Only vehicles built for dual fuel are OK to run E85. The fuel system parts in your vehicle will be attacked by the fuel, and the system will also not be able to supply sufficient fuel for it to run properly.

Can WRX Sti run E85?

It’s real good. The properties in E85 offer many benefits that the Subaru STI and Subaru WRX engine absolutely loves. We’ll start with the end outcome and work our way forward. Simply stated, E85 equates to more horsepower & torque with a high degree of reliability.

Can I run E85 without a tune WRX?

has anyone ran e85 with no tune and have 0 issue? Yes, on the stock tune up to 3 gallons of E85 on a full tank of premium is beneficial for knock resistance.

Why E85 makes more power?

High-Octane Content Alcohol is effective in creating more power because it offers high octane content. E85 is up to 85% ethanol, aka ethyl alcohol. So naturally, E85’s high alcohol content makes it the highest octane fuel on the market.

What gas does WRX take?

unleaded gasoline
For WRX and BRZ models, the Owner’s Manual states: “The engine is designed to operate using unleaded gasoline with an octane rating of 91 or higher.” However, fuel with an octane rating of 87 or higher can be used in either model with no detriment to engine durability.

How much horsepower does E85 add to a STI?

Peak power rose to 305.76 whp, a peak increase of 51.81 whp. An even greater jump in torque was realized, as peak torque output with E85 hit 313.34 lb-ft, a gain of 68.87 lb-ft. The maximum incremental horsepower and torque gains both occurred at 3,880 RPM with an additional 80.11 whp and 80.04 lb-ft, respectively.