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Old 04-23-2009, 08:42 PM   #11
Banana S
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Join Date: Oct 2008
Location: Indiana
Posts: 179
Quote:
Originally Posted by 23109VC
i used to own a highly modded Volvo S60R. that car LOVED 100 octane. there was a gas station near me that sold it and I would mix in 5 gallons with a tank of 91 to net around 93-95 octane. i would also fill up two 5 gallon cans and keep it in my garage - i was addicted.

i called it "cracktane".
That makes perfect sense! Your S60R's "normal" ECU program is tuned to 93 octane. (Most performance turbo cars are.) So when you were running Kalifornia's 91 octane gas, you were most likely getting just enough knock to kick you down into the ECU's "low octane" timing table. Instant power reduction. Add in the 100-octane gas, and you're back into the "normal" timing table, and you're up 30 HP. Doesn't surprise me a bit! to you!
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