I haven't ever actually tested a station. Propel seems to be pretty consistent.
If you are worried about the E85 concentration, use the [URL="https://www.cobbtuning.com/subaru-flex-fuel/"]Cobb[/URL] or [URL="https://www.delicioustuning.com/catalog/20"]Delicious[/URL] Flex-Fuel kits for your tune. They use a GM sensor and can automatically adjust to any concentration of ethanol

I previously had every intention to go with a flex fuel setup on my car. Earlier this year I called Cobb and asked why they don't offer a flex fuel kit for the 02-05 2.0L WRX and was told that WRX's for those years only had 16 bit ECU's vs later models (06+) that have 32 bit. They mentioned that the 16 bit ECU doesn't have enough memory to run mapping for a flex fuel setup.

My current setup I'm using an 02 USDM ECU & wiring with an 02 USDM EJ205. I'd love to go flex fuel but I really don't have any interest in updating to a newer ECU and probably have to redo a ton of wiring to get it working.

Fixed
[url]https://www.delicioustuning.com/02-05_GD_flexfuel[/url]

Have fun stormin the castle

^Wow thanks for sharing, really wish I had known about that before... good to know its there though! At ~$600 I'll still plan to go ahead with my dedicated 91 & E85 tunes on the ID1050x injectors. Looking like something I could get around to doing in the spring next year.

[QUOTE=stg2lgcy00;3656843]Going in for my E85 tune next Friday[/QUOTE]

You will enjoy :)

What turbo do you have? The E85 makes a bigger turbo come to life

Vf34

New 91 & E85 tunes from GST :thumb:

[ame]https://www.youtube.com/watch?v=u3zxRvFbHAM[/ame]

Over 300 at the wheels ...Thats a lot of fun right there!