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  1. General Subaru Discussions
    I was wondering if anyone has used cobbs new flex fuel kit? I heard the previous version had issues or the sensor would go bad fast? Also just trying to get a feel if I want to make the investment to switch the car over to e85 since more and more stations near me have it. I was looking at buying...
  2. General Subaru Discussions
    Hi i have a 04 forester i want to be making 450whp on e85 there are some questions i have first because i am still confused on the fuel lines and everything. i have a grimmspeed bb500 turbo EJ25 getting forged pistons,rods, bearings, and sti crank. getting full jdm sti 04 forester drivetrain...
  3. General Subaru Discussions
    I have a 2018 STI with a Built IAG closed deck block. I am running E85 with a Hellcat pump and 1300cc injectors. I live in Tennessee and with the recent cold snap I have noticed some start troubles with the e85. I know the fuel doesn't like to vaporize below 50 degrees, but I was concerned about...
  4. General Subaru Discussions
    Hello, I am new to the Subie world and just got a 2020 STI. I recently bought an accessport and threw on the Stage 0 tune just so I can log the car, since it is new to me. I ended up getting really bad FNL readings (~ -4) and slight FBK feedback knock readings. A friend suggested that since the...
  5. 2015+ STI Discussion
    Hello everybody. Just want to post here for others to have some comparison and to humble expectations. My goal was to see how far the stock motor and turbo can go. The limiting factor in this current build is the turbo. The tune has maxed out the turbo at about 22 psi. There is no more power to...
  6. Power Bragging
    Hey guys! I have a 2005 Subaru sti. I start got it built here’s the run down Engine built Iag closed deck block 100mm cp coated pistons Saenz I beam rods King bearings Iag pick up and windage Heads Stock cams 80lb Bc springs and retainers Stock valves Ported and polished Arp head studs Fueling...
  7. General Subaru Discussions
    I have a 2006 sti. We are currently running id1050x’s on an ej207 top feed fuel lines with an aem 340Lph fuel pump... Along with it an aem afr gauge. My question is, of course with a proper tune will I need to purchase sensors in order to run straight e85? From what I think, all sensors are for...
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