Nope - completely unnecessary if you know how to read a wideband & have an accurate system (I have a Techedge 2J - same as All Star use on every tune) & the difference between E85 & E70 is 3 octane points i.e Fuck all.

Australian E85 standard excerpt From https://www.comlaw.gov.au/Search/E85:

"E85, as it is commonly known worldwide, is a blend of between 70 and 85 per cent by volume ethanol and the remainder petrol. In summer, internationally, E85 contains 85 per cent ethanol. In mild climates, such as much of Australia, E85 usually contains 70 per cent ethanol in the winter months as the larger petrol component allows cold starts. For very cold winters overseas, the ethanol proportion is lowered to 50 per cent. Despite the seasonal variation in the ethanol proportion, the fuel is still typically referred to internationally as ‘E85’."

Sorry to break it to you RJ, there is no problem with the fuel. The octane rating is no lower than 105 (E70) and no higher that 108 (E85) in Australia.

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

My rotational hovers between 23-25 which is normal due to the rotational fuel cut at idle (pumps lots of cool air through the motor).

I tuned for 11.4:1 above 1 bar of boost.

Your not seeing the 18's at very light throttle on over run by chance?

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

What do you mean by over run? It will sit up at like 18 when just cruising at pretty much any speed.

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R33 GTR - 550hp
Barina - Daily

Over run as in being just on the throttle rolling down a hill or coasting.

What wideband controller do you have? How old is your sensor?

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

Ah k, yeah stays around the same. And innovate, it's maybe 3 months old. Unsure if calibrated for E85 or 98 though. Hasn't been installed in the way I asked so I can't access the plug to recalibrate it.

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R33 GTR - 550hp
Barina - Daily

There's no recalibration needed between the 2 fuel types.

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

How far away from the turbo, Cats (if you have any) os the sensor located?

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The one perkent...

Probably no problem with the fuel Rossco but I would rather fill up at stations where Im getting the extra 3 octanes to 107 instead of E70...there is something in the tank that's lowering the content at ozzy park as proven, but its not a problem as such I guess... its like having your car tuned for 98 Premium then filling up with Unleaded 95...fuck that!
Also that statement you posted above is for generic e85 not the uniteds pumping "Race Blend" I believe which is meant to be guaranteed to deliver 107 octane without any lower variations than 107?

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06 STi: 337hp @23psi on E85...
06 STi: 309hp @22psi on 98ron...

Lexia, Osi Park, Ellenbrook and Padbury are all mean to be "Race Fuel''. That's what they said when I rang them anyway.

Padbury is not listed on their website though....

That will be my closest station, as of tomorrow.

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Bye bye betty blue. Hello F6.

Correct and race blend is meant to be a guaranteed minimum of 107 octane as I understand it.

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06 STi: 337hp @23psi on E85...
06 STi: 309hp @22psi on 98ron...