[Randysubi20]

wassup guys.
I want to install e85 onmy Subaru wrx sti limited 2020 . I’ve been watching few videos and one says a certain things need another says a bit more needed. I was hoping if some one can help me out with a quick breakdown on what I would need to order pls. I would really appreciate it! Thanks 🙏

 

[WRX-maniac]

What are your power goals? Bare minimum you will need to get ethanol rated injectors, fuel pump, fuel rails, and a fuel pressure regulator and a pro tune.

 

[XJman]

What are your power goals? Bare minimum you will need to get ethanol rated injectors, fuel pump, fuel rails, and a fuel pressure regulator and a pro tune.

With this I'd also recommend a flex fuel kit because rarely pump e85 is actually e85

 

[WRX-maniac]

With this I'd also recommend a flex fuel kit because rarely pump e85 is actually e85

More like never. My STi has been on E for 2 years now, the highest pump e85 I have ever gotten was 79%. Every now and again I will spoil her with some ignite E98.

 

[WRX-maniac]

With this I'd also recommend a flex fuel kit because rarely pump e85 is actually e85

Cobb discontinued their flex fuel kit last I checked. Only real perk of the flex fuel kit is being able to run e85 or pump 93, or any mixture of the two on one tune.

Now things are back to old school, you need a separate tune for pump gas and one for e85. With the e85, tuners typically just have the customer fill up on whatever e85 pump they typically use and adjust the fuel tables to that ethanol content.

 

[CaTiRo79]

With no flex fuel I would monitor the blend with a gauge. Something like this: