BP 102

[topher]

go to revo, get an sps3 box, adjust your timing and boost 'on the fly' to suit all your octane needs

[Teutonic_Tamer]

It won't make bu&&er all difference on the standard ECU mapping, as the upper limit is only designed for 98RON (hopefully with some kind of tollerance error - to allow for the now 99RON stuff).

The only time you would achieve any real gain, would be from a specially designed re-map, with the upper limit threshold specifically designed for 102RON.  This also applies to octane boosters too!

Just a waste of money, IMHO. 

Yes but on a back to back scenario, the higher octane will give a better cleaner burn, for the same max advance curve at the same rpm.

Not necessarily so.  The actual "quality" of the burn has nothing to do with the anti-knock (hence octane rating) ability of the fuel (providing that both lower and higher octane fuels are both operating without knock).

What you may be thinking, is that the higher octane fuels usually also have a better overall additives package, which may help to modify the actual flame front, and the general quality of the combustion process. 

Isn't that what i said  :embarassed:   

Well - sort of!

I just tried to clarify the "usual" confusion regarding higher octane fuels.   

[Creepy Coupe]

It won't make bu&&er all difference on the standard ECU mapping, as the upper limit is only designed for 98RON (hopefully with some kind of tollerance error - to allow for the now 99RON stuff).

The only time you would achieve any real gain, would be from a specially designed re-map, with the upper limit threshold specifically designed for 102RON.  This also applies to octane boosters too!

Just a waste of money, IMHO. 

Yes but on a back to back scenario, the higher octane will give a better cleaner burn, for the same max advance curve at the same rpm.

Not necessarily so.  The actual "quality" of the burn has nothing to do with the anti-knock (hence octane rating) ability of the fuel (providing that both lower and higher octane fuels are both operating without knock).

What you may be thinking, is that the higher octane fuels usually also have a better overall additives package, which may help to modify the actual flame front, and the general quality of the combustion process. 

Isn't that what i said  :embarassed:   

Well - sort of!

I just tried to clarify the "usual" confusion regarding higher octane fuels.   

I was only kidding 

[Phil mcavity]

i have to say i filled up with Shell jungle juice for the 1st time today, and have to say, car seems to be running very smooth and im getting approx 2 miles to the gallon better , weird but true. i normally use 99 octane from the people that say "every little helps", missing out on my clubcard points but hay hoo, dont tell the missus, ill be shot if she finds out theres no clubcard points this week!