I have a turbo car on E-85, and I would not recommend running it without an intercooler. While E-85 does defend against knock far better than "Premium" (91-93) Octane Gas. There is still some margin of error there. It's much more safe to wait until you can get a better flowing intercooler. Especially with your mods.Ubermeister wrote:I have read that the original Air-water-intercooler on 1st gen Legacy has an air flowrate of 230cfm.
My setup is: Forged conrods and pistons, E-manage ultimate, Td0516G big, 550CC injectors.
Running about 15Psi of boost, and i get a feeling that my intercooler is a bottleneck in my system. (getting increasing knock in high rpm/boost.
Since im testing E85 at the moment, im thinking about bypassing the intercooler, ie. plumb the turbo directly to the throttlebody, lower the boost and test if the car feels better to drive.
My plan is go get a nice chargecooler, add another electric waterpump in series with the stock one (one on each side of the system) + fit the largest possible radiator (since i dont have ac, i have more room..)
I live in Sweden, not very high temperatures, and its a daily driven car, so i think i will do without an watertank.
Hard to come by a nice fitting chargecooler (for resonable prices) in Europe, so i think i will buy from Votionspeed or Frozenboost.
I am going to fix this turbo issue as soon as I can afford it. Should be in the next couple weeks, and then I will be able to complete this write up.