Detonation Rb25

[hale1320]

I didn't know it but the base switched from 95 octane to 86. I filled up without even looking, and o my way to work I started hearing BAD detonation almost like rod knock. I was on my way to work and it was midnight so I drove it to work. When I got off this morning I went and put in a bottle of octane booster and after a few miles it went away car runs fine but what damage could I have done? And is there anyway I can make the car safe to run on 86 without a tune?

[Harey]

Where are you from? 86 octane sounds low.

To start off with drop the boost as much as possible but in the end you will need to get the ecu retuned for the 86 octane fuel.

[PM-R33]

No way this can be in Australia. 86?

[luvpsi]

didnt know there was such thing as 86 octane. what country you in defently not australia

[MrStabby]

And is there anyway I can make the car safe to run on 86 without a tune?

No. The factory computer should be able to cope with 95 by using the "knock" map, but 95 is the absolute minimum.

[DVS JEZ]

Just baby it around till all that 86 is gone.

Hopefully it didnt ping for too long under high load. Hard to tell over the internet if any damage was done. But just hope for the best the guess.

[hale1320]

I'm from Okinawa japan and we normally have 95 but with all the stuff going on in toyko were not going to have good gas for awhile.

[Galois]

That sucks mate, can you get it retuned there? How long do they think the 86 will be in for?

[hale1320]

Right know they are saying atleast a month I'm prolly just park it and drive my other car. I can get 98 off base but it is supper expensive.

Edited April 4, 2011 by hale1320

[Galois]

Right know they are saying atleast a month I'm prolly just park it and drive my other car. I can get 98 off base but it is supper expensive.

That's what I'd do, though I'm not sure how ideal those octane boosters are, is there any issue with leaving them for a month? Might be worth syphoning the fuel and replacing it with 98

[JonnoHR31]

sitting shouldnt be a problem, but dont use them for more than 1 tank at a time (and only ever as an emergency thing) as it fouls plugs and o2 sensors very quickly