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93 octance

1265 Views 6 Replies 6 Participants Last post by  awenthol
if you flash your car to 93 octane "stage 1" and let say you go somewhere where premium octane is 91 can you still pump it or no? because there are some area that doesn't offer 93 octane gas. plus im planning a trip to PA to snowboard so just want to know what everybody feedback. thanks
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Flash to 91 when you need it. Never run lower octane than what you are tuned for.
The AP has a setting to run a blanket "retard timing xx degrees for bad fuel." Otherwise, as stated, flash a 91 tune....or stay out of boost.
if you don't want to change your tune just don't drive your car car terribly hard and you'll be fine - avoid boosting. otherwise, flash for the fuel you're using. that's the perk of owning an AP, you can easily change your map.
What happens worst case? I have a pro tune so can't really dump in a 91 map unless I use the stock one I guess. I know changing the map is the best idea but I think its important to understand why things behave the way they do so you can learn. This is a good question and I'd like to learn a bit.

I'm thinking the car would pull timing for knock reduction?

Can anything really bad happen, or will the car just run poorly? (Assuming this is just for 1-2 tanks)

Is there a valid octane boosting additive available that works?
Drive like a grandpa and it won't matter. Worst case scenario, you beat the shit out of the car at a high elevation with a fuel system that is already inadequate while using a fuel of less octane, and end up cracking a ringland.

Fuel additives won't make enough of a difference, but if you want to make sure she's safe and still beat the piss out of her, just bring a jug of race gas and add a couple gallons to each 91 tank.
What happens worst case? I have a pro tune so can't really dump in a 91 map unless I use the stock one I guess. I know changing the map is the best idea but I think its important to understand why things behave the way they do so you can learn. This is a good question and I'd like to learn a bit.

I'm thinking the car would pull timing for knock reduction?

Can anything really bad happen, or will the car just run poorly? (Assuming this is just for 1-2 tanks)

Is there a valid octane boosting additive available that works?
Up until it pulls enough timing it'll knock like a mofo and you'll fail a ringland.

Drive like a grandpa and it won't matter. Worst case scenario, you beat the shit out of the car at a high elevation with a fuel system that is already inadequate while using a fuel of less octane, and end up cracking a ringland.

Fuel additives won't make enough of a difference, but if you want to make sure she's safe and still beat the piss out of her, just bring a jug of race gas and add a couple gallons to each 91 tank.
^^ Agreed. Even running 93 octane on 93 octane tune, I dump 1 gallon of "dirty" gas (pumps around me use one hose for all octanes) into a gas jug I keep with me, and add a gallon of Tolulene per fill up. Jug gets emptied into my DD, so i'm not out anything there.
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