C70drvr Posted July 8, 2009 Report Posted July 8, 2009 Anything wrong with that? What could one expect performance wise? I'm thinking about hitting the strip and want to make the most of it.
DHV70 Posted July 8, 2009 Report Posted July 8, 2009 nothing wrong with it... the performance factor really won't be that noticable. its just better for your engine is all. where are you getting 94 & 104 though? the highest i can find in CT are 93 and cam 2, which i'm pretty sure is 98.
ErikS Posted July 8, 2009 Report Posted July 8, 2009 I'm thinking about hitting the strip and want to make the most of it. Then use the lowest octane you can find. Mixing octanes isn't really the recommended way to do things.
B Mac Posted July 8, 2009 Report Posted July 8, 2009 the highest i can find in CT are 93 and cam 2, which i'm pretty sure is 98. I thought CAM2 was like, 100 octane? The only place I know that has it is the exit 17 Mobile off 84 :ph34r:
J0E Posted July 13, 2009 Report Posted July 13, 2009 Generally, the more octane you have, the faster your car goes. There is a reason why in the owner's manual of all high-end performance cars it says you must use premium-grade fuel while economy-cars can run on the lowest.
BurgerBob Posted July 13, 2009 Report Posted July 13, 2009 Generally, the more octane you have, the faster your car goes. There is a reason why in the owner's manual of all high-end performance cars it says you must use premium-grade fuel while economy-cars can run on the lowest. Umm...fucking no. High end cars may require a higher octane, but the octane is an enabler, not the reason for a gain. The octane is a measure of how resistant fuel is to detonation. More powerful applications benefit from higher octane fuels because there is smaller chance of knock.That said, I tried to mix fuels like that at the track and my car did not run right. I'm not sure what tune you're running, but you typically want to calibrate a tune to work with certain octanes (pump gas or racing fuel).
J0E Posted July 13, 2009 Report Posted July 13, 2009 Umm...fucking no. High end cars may require a higher octane, but the octane is an enabler, not the reason for a gain. The octane is a measure of how resistant fuel is to detonation. More powerful applications benefit from higher octane fuels because there is smaller chance of knock. That said, I tried to mix fuels like that at the track and my car did not run right. I'm not sure what tune you're running, but you typically want to calibrate a tune to work with certain octanes (pump gas or racing fuel). Nah man. I ran a bottle of octane-booster in my mom's car which said it raises the octane of the fuel by "7 points" (so 87 to 94) and I could totally feel the difference. Without the extra octane, the car would never spin tire off-the-line. Afterwards, it would bark the tires real loud from a stop. My buddy who knows a lot about cars said it works, too. Plus, higher octane fuel is more expensive. It wouldn't be more expensive if it didn't give you more power. At the track, you have to run more octane and remove the passenger and back seats for the best times.
DHV70 Posted July 14, 2009 Report Posted July 14, 2009 Umm...fucking no. High end cars may require a higher octane, but the octane is an enabler, not the reason for a gain. The octane is a measure of how resistant fuel is to detonation. More powerful applications benefit from higher octane fuels because there is smaller chance of knock. He's got it right. The higher octane fuel is more expensive because (drum roll please) there's more octane in it, duh. Octane is SLIGHTLY (i'm talking miniscule amounts) abundant than hexane, heptane, ect ect. either way. the higher octane number there is in a fuel, the more uniform the ignition of it is. if you're running pure octane, it will be completely uniform. less octane will make ignition less uniform, and cause the car to "knock," which is due to two separate ignitions (at incredibly small time intervals, but at such a high rate, it becomes noticeable) octane also produces a stronger "explosion" when ignited. explosion being used incredibly loosely as my word of choice. also, i'm not 100% on the octane rating of cam2. i just looked it up in google. are you talking about the place in bolton? because that's where i see it my friend's family owns the place... i get it cheaper if i talk to the right people although bolton is off of 384...
C70drvr Posted July 14, 2009 Author Report Posted July 14, 2009 I ask this because I notice the difference in power and how my car runs when I use 94 over 91 octane. It seems more lively using a higher octane.
Dan A Posted July 16, 2009 Report Posted July 16, 2009 Nah man. I ran a bottle of octane-booster in my mom's car which said it raises the octane of the fuel by "7 points" (so 87 to 94) and I could totally feel the difference. Without the extra octane, the car would never spin tire off-the-line. Afterwards, it would bark the tires real loud from a stop. My buddy who knows a lot about cars said it works, too. Plus, higher octane fuel is more expensive. It wouldn't be more expensive if it didn't give you more power. At the track, you have to run more octane and remove the passenger and back seats for the best times. I see what you did there.
J0E Posted July 16, 2009 Report Posted July 16, 2009 I was able to fill with premium because I got paid today...the car is definitely faster!
BurgerBob Posted July 16, 2009 Report Posted July 16, 2009 Please go google what the octane rating method is for. If I ran 87 octane in my car, it would run like shit because I'm pulling 20 psi. There would be knock like crazy...fyi knock is not good. If, on the other hand, I ran 93 octane, then the car would probably run okay. Is the improvement because I am making more horsepower on 93 octane? NO (albeit, there may be a difference of 1 or 2 given no other conditions are altered...something you would not feel of course)! I am able to safely make power with a higher octane, and higher octanes are crucial in forced induction setups. Now, why might a higher octane rating help in a forced induction application?
waldendan Posted July 16, 2009 Report Posted July 16, 2009 Please go google what the octane rating method is for. If I ran 87 octane in my car, it would run like stuff because I'm pulling 20 psi. There would be knock like crazy...fyi knock is not good. If, on the other hand, I ran 93 octane, then the car would probably run okay. Is the improvement because I am making more horsepower on 93 octane? NO (albeit, there may be a difference of 1 or 2 given no other conditions are altered...something you would not feel of course)! I am able to safely make power with a higher octane, and higher octanes are crucial in forced induction setups. Now, why might a higher octane rating help in a forced induction application? Ahh but in a roundabout way you would because the computer would retard timing with the presence of knock so there for there could be a power difference between 87 and 93, depending on what is done to the car of course, but your not making anymore power than the car should be making, its just that the car had less power than it should have been with 87, everyones Butt Dyno is NOT a reliable source of information when it comes to power gains.
RZT5 Posted July 20, 2009 Report Posted July 20, 2009 this thread is so full of fail octane ratings are just a way of representing the temperature at which a fuel burns, and therefore the fuel's resistance to heat and pressure induced combustion (knock). The higher the octane rating, the higher the resistance to knock and the more ignition advance the ECU can run thus making more power. once full advance is reached for a given tune, using higher octane wont make you any more power. http://en.wikipedia.org/wiki/Octane_rating read that and you'll figure out pretty quick if you were one of the ones adding fail to this thread. to the OP, my coral was hitting full ignition advance on 94 in canadian summers, stick with 94 if you have a stock tune.
BurgerBob Posted July 20, 2009 Report Posted July 20, 2009 this thread is so full of fail octane ratings are just a way of representing the temperature at which a fuel burns, and therefore the fuel's resistance to heat and pressure induced combustion (knock). The higher the octane rating, the higher the resistance to knock and the more ignition advance the ECU can run thus making more power. once full advance is reached for a given tune, using higher octane wont make you any more power. http://en.wikipedia.org/wiki/Octane_rating read that and you'll figure out pretty quick if you were one of the ones adding fail to this thread. to the OP, my coral was hitting full ignition advance on 94 in canadian summers, stick with 94 if you have a stock tune. Thanks.
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