Not sure if this has been covered as I did a search and found nothing concrete. Simple question:

Does anyone know if Evo's sold in California are tuned according to the 91 octane limit available there? As opposed to an Evo sold in New Jersey for instance that will be regularly running on 93 octane or higher.

Any thougths would be appreciated!

 

think they are all the same

 

All the same. Mitsubishi has no way of knowing for sure what cars are going to end up where with people moving, traveling to other states, dealer trades and what not.

 

^^ agreed well put

 

That was what I was thinking. The reason I was asking was that I have been periodically filling up my tank with 8 gallons of 91 and 4 gallons of 100 from a couple of different 76 stations in Los Angeles. The blend will surely take my octane above 93 without using any additives or octane boost which I want to avoid using. This is good to know if I ever get a re-flash which I am considering.

Thank you for your responses.

 

lol, the Evo needs 91 or 93 octane? and what is better? BP or Shell?

 

The Evo wants 93 but needs at least 91.

Shell IMO.

 

i use exxon everytime

 

We have Sunoco here in PA. I use 93, and used to use 94 until they took it away!! But it's all good.

 

The ecu is adaptive. It learns what relative level of octane your fuel has and adjusts the timing/fueling accordingly. If you want your car to go faster with higher octane fuel you have to reset the ecu.

 

the evo needs 100+ octane,
but my wallet cant support its addiction

 

the evo needs C16, nothing less

 

I think it's more like... "The Evo needs at least 93" but has a very sensitive knock sensor that may save the motor during high load, high temp conditions.

Screw you California! Trying to save our air, water and resources...bastards. Just give us 94 octane and add another 20 cents in tax to the total...I'll pay it. What's another 50 cents when we're already paying $3.70+ / gal for ****ty 91 octane?

I think the bottom line is, get your car custom tuned so you don't have to worry about what the stock evo is tuned for.

 

haha what? Aren't vehicles are often made with different emissions controls for CA...or am i completely wrong??

 

I thought the same thing.