just curious about what the stock fuel requirements are... and does Toyota demand 93 for the TRD setup??

based on a measley 9.7:1 compression ratio, I would assume 87 for the stock setup... and the TRD doesn't have any form of intercooling so I would assume less than 5psi boost... which should warrant Super...

(my logic = 9.7*14.7psi = approx 142 static pressure for tc... 11:1 in S2000 yields about 162 psi... pretty much the detonation limit... and TRD would give 9.7*19.7 (based on 5 boost) yields 191psi)

anyone??

Not much is known about the S/C setup but the stock setup will be requiring just regular 87 octane according to the owner's manual. I am still going to use a higher octane though....yea, yea, yea, wasting money some would say but I think that if you are eventually going to go up to premium because of knocking then you might as well start with the good stuff.

I put 89 octane in my 91 camry right now, is that a waste of money?

I put 89 octane in my 91 camry right now, is that a waste of money?

Anything over what the manufacturer recommends is a waste, only thing octane effects is how much pressure it takes before the gas will ignite. Using higher octane will not help power etc.. I have to use 91+ octane in my car or I will get engine knock because the gas ignites before it should due to the compression ratio.

93 octane!?! wow. I wish good ol' california had that at the pumps...even though it would cause $3gal. Oh well.

Using higher octane gas than recommended will actually lower your performance by the wasted unburnt fuel... Gas isn't cleaner, it's just the mixure of the chemicals are different... Octane is just a % of that...

I would just go with the usual rule of thumb that if you're going F/I, it's safe to say you might as well put in 91 or 92 whatever it is at the pumps near you...

Also, some good things to know about gas in general is that gas companies all transfer gas along the SAME pipelines... Lets say the refinery is in Huston, and they have to pump gas up to Maine... Cheveron, Shell, Texaco blah blah all use the SAME pipes to transfer gas... What this means is that they'll pay up say 10 barrels up front in Huston, and instead of waiting for the fuel to pump, they'll just take 10 barrels from Maine thats already there to send to their stations... The the 10 barrels paid at Huston will be pumped to Maine for the next transaction...

In short, this means that no matter WHERE you go, the GAS you get WILL be the same less the additives... Studies have shown that the best fuel for your car for longivity is Cheveron... 76 gives you better performance but burns faster, and aside from those two, they're just about the same either way...

I'm nothing but Cheveron...

Hope this helps... If anyone wants I'll reference some links as to where I obtained this info... I dunno if I can find it now since I read this about 3 years ago while preping up to buy a new car...

I'm nothing but Chevron too...but my parents pay for gas. Only cause i'm going to college.