and then kick him straight in the wiener!

 

Whatever. Just look for the spare parts MR from Florida in a couple of months.

 

Actually, Higher octane gas burns slower as there is a higher ratio of "fuel to filler" and thus it should make a car designed for 87 or a car designed for 91/93 get better gas mileage and perhaps show slightly better performance... the question is whether or not that out weighs the price difference at the pump

 

I dont normally post in the evo section, but I have a buddy with a 2005 corvette and it says the "recommended" fuel is 91, but he still puts in 87 and it runs fine. For instance my rrm piggyback recommends 91 octane as well, I started running 93 for a month or so, then switched over to 89 and I didnt recognize a bit of difference. My car still runs excellent. Just my two cents.

 

I don't think everyone reading this really understands how much of a difference octane makes with forced induction, especially with boost pressure like on the Evo. All of that extra air mass has to be mixed with a proportionate amount of fuel. So a forced induction motor uses ***multiple*** times the fuel of a naturally aspirated motor. What that boils down to is that the fuel mixture has to burn well without knock, thats why corvette^^^ and the ralliart^^^ are less suceptable to knock. NA simply burns less fuel at once. And it is a fact that lower grade octane IS more prone to knock, which in turn will retard the timing, which in turn will decrease performance. That is much more noticeable with forced induction.

 

What color was the MR? What Shell? East or West Orl?

 

well a corvette burns more fuel than an evo- stock hence 350hp vs 271(or whatever mitsu wants us to beleive) its just that it burns it over 5.7 liters of displacement so there is less power per liter and it will have a lower octane requirement to run well... Fact is yes, if you drive your evo on 87 you will say to yourself "this sucks" and lose to cars you wouldnt have otherwise...

 

I thought I knew and have done work on every MR in Orlando. I know none of my clients would ever do something like this. I called all of them. No dice. What did they look like? BTW, one is a salesperson for .

 

I probably would have gotten the plates and posted them so hopefully no one on the boards would ever end up buying it used!

 

burning slower means you can send unburnt fuel through the emissions system (fouling your cat). there is NO benefit to using higher-octane-than-prescribed fuel in a fuel injected car.

 

higher "fuel to filler" ratio??? the octane rating is based on the chemistry of the gasoline...93 octane gas has the burn characteristics of a fuel made with 93% Isooctane and 7% Heptane. Straight gasoline is 70/30 and different strategies are employed to increase the octane rating but there is no "filler" in 87 octane gas...its an improvement over straight gas and 93 is a further improvement.

again, there is NO cleaning, performance, or efficiency benefit from running higher-than-recommended octane fuels in a fuel-injected car.

 

There is a reason why has a sticker on the inside of the fuel cover that says "premium fuel only"

 

Let the guy run 87oct, he will find out the hard way. I is not going to be able to run much boost at all and he is in danger of really detonation. Ingorance can be expensive..

 

ROFL!!!

 

Grey MR

South Orlando, Near the Airport