Eflex/E85 or 98 – Nistune

[simpletool]

the 02 sensor is just a lambda sensor, it dont care what fuel is in the motor, it will always try and correct to lambda = 1

lambda = 1 is the same no matter what fuel it runs on. the AFR scale is different but the lambda sensor gives no shit..

+1 to that.

It will work fine. Stoich is stoich as far as the O2 sensor is concerned. O2 is one of the better sensors on the car as it works from basic chemical principles.

The biggest issue E85/E70/Eflex users seem to have is the changing ratio. If you want to be really special you can make a flex fuel vehicle with an oxygen content sensor in the tank (http://www.zeitronix.com/Products/ECA/ECA.shtml) and an ECU with multiple maps (Link G4) and interpolate between them.

I say just run 98 ron. That giant ugly turbo you have will make plenty-o-powah.

[Ben.]

If you want to be really special you can make a flex fuel vehicle with an oxygen content sensor in the tank and an ECU with multiple maps (Link G4) and interpolate between them.

did this on a mates car recently, but threw liquid lpg into the mix too. tri-flex fuel lol

[Datman]

Don't forget the substantial decrease in range of a tank of fuel on E85. Not a real problem if driving past said caltex on regular basis, but could get very annoying if you have to go out of your way to refill 2 or 3 times a week.

[Jason Broadhurst]

Not being able to change the PID control for the O2 feedback on a nistune will be a problem if deviating a long way between the map and the required trim level.

[10sec rx7]

Why would you have to correct a lot? Only reason is because you haven't dialed in the ve table correctly...

[AlexinPerth]

What? They can't autotune on a narrowband sensor?