E85, stock turbo II

Boostmaniac · 08-10-2009, 04:27 AM

Quote:

Originally Posted by moremazda

Yes they do. In fact the ecu has two distinctly different sets of fuel tables for base and correction (including fuel temperature) that it blends between based upon the ethanol content of the fuel in the lines. Ethanol is not a straight conversion like you are making it out to be. Ethanol has many different properties than gasoline that are addressed by the modern flex fuel ECU's.

Like I said on the "other" board you could swap in the 720's and for the most part in the summer it should work just fine, but your millage will most likely suck, and if you drive it in the winter good luck getting it started. On the positive note you could probably run that stock turbo right through the hood and not have to worry about the engine dieing from pre-ignition, compressor wheel shrapnel maybe, but not pre-ignition.

Ryan

Lol, yeah. 18 psi, 74 degrees BTDC, zero pre-ignition.... if it'll start.

If you do this, just borrow a wideband and keep a close eye on your AFR's. Remember the stock ECU loves to run pig rich so you may end up having to pull fuel around the torque peak if it gets chunky on the dyno.

This sounds like a fun experiment, let me know how it goes.

SecondGenPat · 08-12-2009, 12:08 PM

about a month after buying my stock/unmodified 87 n/a I tried a full tank of E85 out of curiosity to what the primitive eec would do:

The car started every time, however it ran like crap, the idle was horrible, huge lack of power, constant misfires, and horrible fuel consumption.

Those were my results, hope that helps in your decision.

If you want to run E85, go for it. Be an innovator, challenge the old ideas, try new things. If it breaks, it breaks, but you will come out of it with more knowledge than the guy who is too afraid or just does what he is told to do. That is what makes our passion for automobiles a passion.
-Pat

08-12-2009, 12:08 PM	#2
SecondGenPat Start a Revolution Join Date: Feb 2009 Location: Park Ridge, NJ Posts: 29 Rep Power: 0	about a month after buying my stock/unmodified 87 n/a I tried a full tank of E85 out of curiosity to what the primitive eec would do: The car started every time, however it ran like crap, the idle was horrible, huge lack of power, constant misfires, and horrible fuel consumption. Those were my results, hope that helps in your decision. If you want to run E85, go for it. Be an innovator, challenge the old ideas, try new things. If it breaks, it breaks, but you will come out of it with more knowledge than the guy who is too afraid or just does what he is told to do. That is what makes our passion for automobiles a passion. -Pat __________________ That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, — That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government -The United Stated Declaration of Independence