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Old 02-23-2012, 06:00 PM   #1
ruckus racing
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Default fuel requirement question, 99 STi RA

99 STi RA, original tune, no power mods...

what octane does this car require, and what is prefered.
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Old 02-23-2012, 09:13 PM   #2
TommyAtomic
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What is the highest octane pump petrol available to you?

I run 94 octane ethanol free. It seems like it is just on the border of what is required. Many in the US only have 91 octane with ethanol available to them. I have heard it borders on being insufficient.

This of course is heresay. What octane is the standard for premium fuel in Ansbach?
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Old 02-23-2012, 10:33 PM   #3
eg33GC
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I would assume the newer 207s have more aggression than an early G does out of the box.
It should be noted uk guys have issues even with 97ron octane and det.
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Old 02-23-2012, 10:45 PM   #4
DHRDAN
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Quote:
Originally Posted by eg33GC View Post
I would assume the newer 207s have more aggression than an early G does out of the box.
It should be noted uk guys have issues even with 97ron octane and det.

It should be noted there are no "newer 207's"


Just saying....
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Old 02-23-2012, 11:12 PM   #5
eg33GC
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Quote:
Originally Posted by DHRDAN View Post
It should be noted there are no "newer 207's"


Just saying....
you might want to work on grammar, reading comprehension; modifiers and propositional/operation phrases specifically.

And there are variants of the 207. An older 207 is a 1999. A newer is a 2007.
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Old 02-24-2012, 01:55 AM   #6
ruckus racing
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i have Aral 102 available, and esso super plus near by (97ish)

i was told on type-ra.co.uk that i MUST get no less than 99
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Old 02-28-2012, 08:13 AM   #7
Poppie
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100RON as the that is what the 99+ STIs (possibly WRXs as well) were mapped for.
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Old 02-28-2012, 10:18 AM   #8
Marnix
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Yes 100 RON so you have fuel with that rating available from Shell or Aral.
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Old 02-28-2012, 09:36 PM   #9
elislider
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keep in mind different countries use different octane rating systems. the USA uses an average of different octane ratings. Japan uses straight RON values. so in japan i believe it is 98 (not 100?) RON [maybe this is for the v3/4 only?] which translates to about 94 in the USA rating system. I ran 92 (usa rating) in my v3 STi and it was fine, though not perfectly ideal. also all the gas in the USA is E10 now... kinda sucks but the oil industry is always trying to squeeze out another dollar from the economy
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Old 02-28-2012, 11:03 PM   #10
i_c_the_light
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Simply put: use the highest you can get. 98 RON is the minimum for them.
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Old 02-29-2012, 02:33 AM   #11
Marnix
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Europe uses the same rating as Japan. Shell has V-Power 100 (or is that 98?) and Aral Ultimate 102.
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Old 02-29-2012, 08:00 AM   #12
Poppie
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V-Power in the UK is 99 RON but Germany gets it rated at 100 RON and France is 98 RON.
Seems odd that Shell don't just do the same rating of their SUL in Europe.
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Old 03-04-2012, 08:07 AM   #13
Dan707
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Default I own one, 99 STi RA V ltd

Agreed with this.

v5/v6 STi Ra/R has an aggressive tuning (more timing from factory) and higly recommended for min 98...
Or you should add some real octane booster to help.

Quote:
Originally Posted by i_c_the_light View Post
Simply put: use the highest you can get. 98 RON is the minimum for them.
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Old 03-05-2012, 10:14 PM   #14
elislider
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USA Shell V-Power is 92 (usa rating system) which is only like RON 96.5-97
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