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Old 02-21-2005, 09:11 AM   #1
NorthWesternMIScooby
Scooby Newbie
 
Member#: 68560
Join Date: Aug 2004
Location: Kewadin, MI
Vehicle:
1992 Legay Touring
Silver

Exclamation which octane

Got a question,
What is the number of the octane you can fun in subies. is it 87, 89, 92, or what. Also I am still looking for ways to upgrade my car both mechanically and cosmeticly.
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Old 02-21-2005, 11:32 AM   #2
conker69
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Member#: 59692
Join Date: Apr 2004
Location: Cincinnati
Vehicle:
2005 Impreza WRX STi
WRB-Gold

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I don't understand what you're asking? The octane requirements depends on the car. Not all of them are the same.
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Old 02-21-2005, 07:18 PM   #3
dosage0
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Member#: 42323
Join Date: Aug 2003
Location: VF35, Pinks
Vehicle:
2004 WRX
Silver - UTEC, Tuna, TBE

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you can run whatever octane you want. Your car works like this: It feels knock or misfires and it pulls timing / boost / and (or) adds fuel. This will decrease your power. The higher octane gas you run the less chance you are going to have detonation/missfires/knock and the more timing / boost / lean fuel conditions your car's ecu will run. Your cars ECU will not adjust immediately. So dont put in 94 octane and think OMG *** ITS NOT THE FAST right away. You probably wont even notice it because it changes over several tanks. This is true up to a certian point -- where the stock ECU will max out. If you run something aftermarket, you can generally set your parameters wherever you want.

Short answer: Run the highest octane you can afford.

Rob
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Old 02-25-2005, 10:27 AM   #4
legacy92ej22t
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Join Date: Sep 2003
Chapter/Region: MAIC
Location: Williamsport PA/SilvrSprngs MD
Vehicle:
92 Legacy turbo5mt
All go and no show...

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The '92 Legacy Touring wagon (turbo) is premium only. So depending on where you live that's a minimum of 91 octane. I run Ultra 94 exclusively on street myself. Like Rob said, I'd run the highest octane you can.
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