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Message
Need some help regarding 91/93 octane fuel.
Posted on 3/19/15 at 11:32 am
Posted on 3/19/15 at 11:32 am
My vehicle is set up to run 93 octane but I will be driving it out to AZ for an extended stay and the highest octane they have there is 91. So my question is should I simply put an octane booster every time I fill up or should I buy a programmer and set it up for 91 octane?
4
Posted on 3/19/15 at 11:42 am to upgrayedd
don't worry about it and don't drive it aggressively.The computer will retard the timing if it senses any detonation
Posted on 3/19/15 at 11:43 am to upgrayedd
How old is your vehicle
Eta: what ^^ he said
Eta: what ^^ he said
This post was edited on 3/19/15 at 11:44 am
Posted on 3/19/15 at 11:43 am to Agforlife
quote:
How old is your vechile
2010
Posted on 3/19/15 at 11:44 am to upgrayedd
Yeah you should be fine just don't hammer it up any big hills or pull anything heavy
Posted on 3/19/15 at 11:44 am to meauxjeaux2
quote:
don't worry about it and don't drive it aggressively.The computer will retard the timing if it senses any detonation
So I have to drive it aggressively all the time for the ECU to compensate?
Nevermind, you said DON'T
That's going to be hard with a Camaro 2SS
This post was edited on 3/19/15 at 11:46 am
Posted on 3/19/15 at 11:45 am to upgrayedd
No don't drive it aggressively
Posted on 3/19/15 at 11:48 am to upgrayedd
quote:chevys have excellent knock sensors.
That's going to be hard with a Camaro 2SS
Posted on 3/19/15 at 11:51 am to meauxjeaux2
quote:
chevys have excellent knock sensors.
So what exactly happens when it senses a knock? I'm not familiar with all this (obviously).
Posted on 3/19/15 at 11:57 am to upgrayedd
Less power.
After a week or so at 10k feet you could run 85 octane.
The majority of the country doesn't have 93 anyways.
After a week or so at 10k feet you could run 85 octane.
The majority of the country doesn't have 93 anyways.
Posted on 3/19/15 at 12:30 pm to upgrayedd
Just run it like it is.
Avoid high revs when its ( the engine) cold.
Avoid high revs when its ( the engine) cold.
Posted on 3/19/15 at 12:37 pm to upgrayedd
The computer changes the fuel mixture/ timing to a richer mixture.
Doing this for too long will ruin the cats.
Doing this for too long will ruin the cats.
Posted on 3/19/15 at 12:46 pm to VetteGuy
quote:
Avoid high revs when its ( the engine) cold.
So as long as I floor it only when the engine is warmed up, I should be ok?
Posted on 3/19/15 at 1:30 pm to VetteGuy
quote:
The computer changes the fuel mixture/ timing to a richer mixture.
I thought it just retarded timing...?
Posted on 3/19/15 at 1:34 pm to s14suspense
quote:
thought it just retarded timing...?
Nope it constantly adjusts air fuel mixture for optimal ratio
Posted on 3/19/15 at 2:02 pm to upgrayedd
Your ECU will give zero fricks going from 93 to 91 octane fuel. GM tuned that thing pretty conservatively and the ECU will make whatever small changes are needed accordingly.
Posted on 3/19/15 at 2:48 pm to upgrayedd
Posted on 3/19/15 at 3:52 pm to upgrayedd
quote:
So as long as I floor it only when the engine is warmed up, I should be ok?
Damn straight.
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