Is E85 good for STI?

It’s real good. The properties in E85 offer many benefits that the Subaru STI and Subaru WRX engine absolutely loves. Simply stated, E85 equates to more horsepower & torque with a high degree of reliability. E85 is a more knock resistant fuel than your typical 91 and 93 octane due to its slower burn.

What kind of gas does a Subaru WRX Sti take?

Fuel Requirement Premium unleaded gasoline (91 octane) required. 93 octane recommended for maximum performance (WRX STI).

How much HP does a Cobb tune add?

Cars utilizing a Stage1+BigSF or Stage2+BigSF map with the COBB Big SF Intake System can expect to see 10-12 HP in addition to the presented non-SF dyno charts. *For a complete explanation of each Off The Shelf Map for the 2020 WRX, visit our Map Notes Page.

What do you need to run E85 STI?

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 I put 87 in my STI?

your STi is totally fine. The ECU will notice that you put gasoline lower then the recommended 91 octane in and will retard timing and boost.

Can I put 87 in my WRX?

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.

Is Cobb stage 1+ worth it?

Is it worth getting an Accessport if the vast majority of your driving is commuting in traffic? Absolutely. COBB’s Stage 1 tune has transformed the car to drive the way I want it to drive, rather than having to work with its quirks. I don’t even feel like I need any more performance for a good long while.

How much HP does E85 tune add?

After jetting the blower carbs for E85, the power output jumped to 700.1 hp and 646 lb-ft of torque. In addition to the power gains, the E85 dropped the inlet air temps by over 70 degrees, from 166 degrees to 92 degrees!

Can you run E85 on a stock WRX?

yes, i have done that. i have the Cobb AP to monitor knock, fuel, and AFR to confirm everything is okay. i only put in 1 to 1.5 gallon of E85 and the rest with gasoline.

What does the Cobb flex fuel Kit do?

The COBB Flex Fuel kit will allow you to overcome any disparities in ethanol content from station to station or season to season. This is something a standard tune for E85 cannot do.

How does flex fuel work in a Subaru?

Subaru Flex Fuel. This long awaited, highly anticipated, feature is upon us! Firstly, let’s define Flex Fuel. Flex Fuel allows seamless flexibility between using standard gasoline and ethanol based fuel which is where the term Flex Fuel is derived. The key component enabling flexible fuel usage is an ethanol content sensor.

What does it mean to use flex fuel?

Firstly, let’s define Flex Fuel. Flex Fuel allows seamless flexibility between using standard gasoline and ethanol based fuel which is where the term Flex Fuel is derived. The key component enabling flexible fuel usage is an ethanol content sensor.