What about on stock tuned sti's though? Any experiences

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Version 6 STI

Hey Bud - I'm running it in my STI - Ya ya not stock I know but I haven't had to touch the tune at all swapping between 98 & P100.

I could possibly squeeze another degree of two of timing into it on P100 though.....

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[CENTER][SIGPIC][/SIGPIC][/CENTER]
[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]

I occasionally swap between the two fuels bp98/p100 in a stock tuned 2010sti with no issues. Car was tuned for 98.

Cheers.

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Bye bye betty blue. Hello F6.

What if you just chucked in some p100 for lols in a stock 06wrx after its only been using 98 all its life ? No issues?

using the Perth-WRX mobile app

Pull the trigger bro.

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Bye bye betty blue. Hello F6.

I still have no explanation for this: I get more kms running on P100 than BP98 and the car feels better on P100 also. I have absolutely no idea how or why that works because I'd expect the opposite (for amount of kms).
Driving in the same way for both fuels too, still more kms out of P100. Unbelievable.

It's a great fuel!

^ am i missing something here or i thought that the p100 was suppose to get you more km's than 98? Being a higher octance shouldnt you expect it to run better?

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98 gf8 Rip

Mine's still running fine, feels better but it's a stock V3 JDM STI computer so it's designed for 100ron - so it ran on 100 in Japan for about 9yrs then 98 here without a problem for about 7 yrs then back to 100 all without a hiccup.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.

P100 is "98RON + ethanol"

The ethanol has less stored energy, or something similar in technical terms, and fuel economy could be/should be worse than straight 98.