O2 millivolts e85

[Wahoo]

What am i looking for when it comes to O2 millivolts on e85?

I have a TT chip tuned for my setup and seems to run good, no knock but i dont know if i should still he concerned with the millivolts?

Thx

 

[turbonut85]

O2s will read just like pump gas. E85 is a touch more forgiving so keep it above .780ish at wot....

 

[TT/Ameasap]

You can get by with lower 02 mv , but it depends on what kind of cylinder pressures. I have run low 700's and into the high 600mv with low boost and timing. As cylinder pressures increases, I add fuel.

 

[turbonut85]

You can get by with lower 02 mv , but it depends on what kind of cylinder pressures. I have run low 700's and into the high 600mv with low boost and timing. As cylinder pressures increases, I add fuel.

This^^

 

[Wahoo]

Well my chip is burned to my setup, but i havent run my boost as high as what the chip is burned for because i didnt have a boost controller.

I ran about 15psi and the chip should be good for 22-23psi.

Its hard for me to remember all the aspects about how the ecm and chips work, but i have a tt extender chip since i have a basic maf translator. I havent added any fuel with the translator at all.

My int jumps around between 120-138, my blms seem to all ways be around 150 but i dont know what rpms or cells i noticed that at.

Either way i havent seen knock. I havent adjusted the chip at all, and i havent run the 22_23psi the chip is burned to.

I dont really plan to do the pedal dance and tune it other than by raising boost and maybe using the maf translator to add fuel.

Im pretty sure this chip idles in open loop so is that when i notice the 150blm.. Ill have to post my numbers when i get the car back together.

 

[Wahoo]

So i have the extender chip, with basic maf translator. Chip is tuned for 22ish psi, only running 15psi at the moment.

Last night after a run my scanmaster showed my millivolts at 670 with no knock. It was a cold day about 45/50 degrees.

I turned my dail for wot to add 4% and it came up to i believe low to mid .700s. No knock, but that was my last run.

On the way home i put the scanmaster to read maf air flow, and i went wot at 15psi and it only showed 90 i believe. Is that low for a ta33 turbo@15psi? Or is my maf bad? The car runs great other than not that fast yet.

 

[turbonut85]

MAF should go to 255 at wot....but that's with a TT chip....idk about the extender chip