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why premium??

 

Premium has a higher octane so it burns slower. The fc was made to run on 87 octane. If you've done any major mods to the car then it is recommended to run premium because of it's slower burn rate. The slower burn rate keeps the car from detonating.

 

its bone stock, still need to run premium?

 

As long as you are on bone-stock, no.

 

Uh, the first question is....

Turbo or not?

 

either NA or turbo, if your bone stock, 87 will work fine. However once you begin modding, premium will become a must.

 

DOUBLE ..... your fun with two of my posts

 

I actually have the same question, but somebody told me that 87 in the USA is like 91 in Canada, does this make sense?

 

I'm tuned for premium, but today it's a bargain!
I look at it this way:
At $1/gal, premium cost 20% more.
at $3/gal, it's only 7% more.

 

It's the difference between MON and RON gas ratings. US gas ratings are listed as about 4-5 points lower than (just about) anywhere else in the world.

So our pumps labeled 87 would be listed as 91 in Europe. And our pumps listed at 93 would be labeled 97 in Japan, etc. Someone can confirm whether Canada uses the US rating or the RON (IIRC) rating.

 

Makes sense to me!

 

and on top of that 110(pump at a few stations around here) is only 4.05 a gallon right now
only 33% more to run race gas!
now thats a bargin

 

I wonder if rocket fuel is now cheaper that gas?

 

Probably. But I am guessing that running rocket fuel in any car, much less a turbocharged rotary is not recomended.

 

I talked to the guys who run fuels on base. Last week when gas prices were near all time highs. They said jet fuel was alot cheaper.

 

Jet fuel prices vary.... (It's just kerosene with additives)

The airlines are prob buying it at $2.20 or so a gallon.

Go to your local airport it is prob $4+ a gallon.

On the bright side.... your car does not burn 450 gallons in the first hour of flight like the cargo plane I flies does :P

James

 

ok well im just gonna run 89 for safty's sake

its an 88 GXL (N/A)

 

lol you dont need anything more than 87 for n/a!

 

I'm going to tune my car to to run 87 AND still get 450WHP

 

rockets run on ethanol or hydrogen, so yes and no

 

with a p-port 20B?

 

i was wondering, does running on premium give you a little more gas mileage,
and will i need to run on premium if i bridge port a s4 N/a?

 

I have an N/A that put down 172rwhp, more than most, and all I run is 87. Anything more is a waste.

 

Do we have to have another thread on this??? The search function is found in the uer right hand corner of the page...

If LittleCon had searched he (or she) would have found that anything more than 87 octane on a stock FC motor actually is more likely to cause problems, and will actually result in less HP.

See the octane rating has absolutely nothing to do with BTU or power output. The only thing higher octane numbers do, is make it harder to pre-ignite. It makes the burn slower. Higher octane does not contain any additional power or performance unless the motor was designed or tuned to run on a higher octane (and even then the additional power is only a result of higher compression or boost along with computr processing).

In fact (more so on a non-turbo) you want the gas to ignite as easy as possible. Lower octane on a rotary with less than a 10:1 compression actually burns cleaner and faster than a higher octane.

So using higher octanes on a stock motor will result in increased deposits on the rotor faces(which could result in pre-mature engine failure), less power, and less money in your wallet.

So why would you waste the money and buy anything but 86 or 87 octane???

And finally, thread closed. Covered and proven countless times before.