hypothetically speaking....what would happen if you put 87 or 89 in your tank?

 

if you put in a lower octane, at best the car would sense it, retard the timing and run with less power.

at worst, detonation and a destroyed engine.

 

93 ftw! 91 if your area isn't cool enough for 93

 

There's mapping in the ECU for up to 95 octane, per Hondata, at least, on the 06+. However, I do agree, it doesn't necessarily mean more power

 

ECU senses detonation, retards timing, and you get less power and mpg. Maybe detonation is weak and no damage occurs, maybe not, but the cost spread analyses I've seen show that you are better off paying the 10-20¢ premium per gallon to get more power and mpg rather than lose that money on the back end with lower mpg and having to fill up more often.

 

LOL >.<

 

you live aurora too? and drive a yellow s2k??

 

In the Rocky Mountain (high altitude) states, 85 AKI is the minimum octane, and 91 AKI is the maximum octane available in fuel[citation needed].

The reason for this is that in higher-altitude areas, a typical naturally-aspirated engine draws in less air mass per cycle due to the reduced density of the atmosphere. This directly translates to less fuel and reduced absolute compression in the cylinder, therefore deterring knock.

It is safe to fill up a carbureted car that normally takes 87 AKI fuel at sea level with 85 AKI fuel in the mountains, but at sea level the fuel may cause damage to the engine. A disadvantage to this strategy is that most turbocharged vehicles are unable to produce full power, even when using the "premium" 91 AKI fuel. In some east coast states, up to 94 AKI is available. In parts of the Midwest (primarily Minnesota, Iowa, Illinois and Missouri) ethanol based E-85 fuel with 105 AKI is available [2]. Often, filling stations near US racing tracks will offer higher octane levels such as 100 AKI[citation needed] . California fuel stations will offer 87, 89, and 91 AKI octane fuels, and at some stations, 100 AKI or higher octane, sold as racing fuel.

 

 

LOL are you the turboed one?

like you go to the timarac meets and stuff? before they closed it down.