Is there an OCTANE Formula, IE 1 octane 2 -1 psi??

[Mini1293]

Hi

I'm new on here and was told that someone might be able to help use.

I just wondered is there a rough guide to how much extra boost / ignition advance you can run when you up the octane of your fuel??

so for example if I run some Millers octane boost in my car and it's been rolling road tuned on normal superPlus fuel, how much extra Boost could I safely run if this Millers give you 2 extra rons?

Many thanks for any help.
Mini1293

[cptsideways]

Difficult one its not a precise figure

Saab make a widget that adjusts boost & timing to compensate for air intake temps, RON, boost, intercooling etc.

It's not that simple.

http://naca.larc.nasa.gov/reports/1925/naca-report-205/index.cgi?page19.gif

www.turbofast.com.au/TFcompB.html#readme

May be some help in there.

The other method is a rolling road tune up, but octane boosters are bit of a dodgy one. Better off with water injection or extra intercooling.

[Mini1293]

Great many thanks for the links and the advice