100 octane!!

[matt9ball]

Just noticed for the first time ever that the crappy challenge petrol station by my house has a avggas 100 octane pump.i filled a petrol can with 10litres and went on my way...it was $2 a litre..that seemed good when the 96 there was $1.75...
anyway filled my 20V up with the stuff and it was like magic!!!

My question is it ok to run this stuff more often on my 20v????
i was told that i should mix it with 96??

anyway was the best $20bucks i ever spent on my 4age haha.

its a silvertop intake and exhaust mods

thanks

[RunningRich]

Avgas is leaded. Say goodbye to your O2 sensor and cat.

[matt9ball]

No CAT but O2 sensor could be a problem lol

[slighty_sykotic]

Just noticed for the first time ever that the crappy challenge petrol station by my house has a avggas 100 octane pump.i filled a petrol can with 10litres and went on my way...it was $2 a litre..that seemed good when the 96 there was $1.75...
anyway filled my 20V up with the stuff and it was like magic!!!

My question is it ok to run this stuff more often on my 20v????
i was told that i should mix it with 96??

anyway was the best $20bucks i ever spent on my 4age haha.

its a silvertop intake and exhaust mods

thanks

Explain to me why a higher octance will give you more power....

Unless your car was winding the timing back due to knocking/pinking

[rolla_fxgt]

Just noticed for the first time ever that the crappy challenge petrol station by my house has a avggas 100 octane pump.i filled a petrol can with 10litres and went on my way...it was $2 a litre..that seemed good when the 96 there was $1.75...
anyway filled my 20V up with the stuff and it was like magic!!!

My question is it ok to run this stuff more often on my 20v????
i was told that i should mix it with 96??

anyway was the best $20bucks i ever spent on my 4age haha.

its a silvertop intake and exhaust mods

thanks

Explain to me why a higher octance will give you more power....

Unless your car was winding the timing back due to knocking/pinking

Um aren't 20v's 100 octane needed? so anything below drops the performance, just like 98 is a huge improvement over 96 in them

[Leon]

Placebo effect, marvelous thing that.

[slighty_sykotic]

Placebo effect, marvelous thing that.

What I was thinking...

[Mr Revhead]

nope
would make a difference
the 20vs are specified for 100 octane in japan
thats why going from 95 to 98 is very noticable on them
and they barely run on 91!

[trdtrueno]

so if i used avgas i would lose my o2 sensor and catbak???

[Santa'sBoostinSleigh]

so if i used avgas i would lose my o2 sensor and catbak???

the lead in avgas kills O2 sensors and blocks up cat converters

[Mr Revhead]

02s and cats dont like lead.

so after a while your 02 wont function correctly

[barryogen]

Explain to me why a higher octane will give you more power....
Unless your car was winding the timing back due to knocking/pinking

I always find it weird when people ask for an explanation excluding the obvious reply that'll be given.

Higher octane doesn't necessarily give you more power anyway, look around at some of the 91 octane racing classes... sure it's a special blend of 91, but it's still 91.

Power output per litre of fuel is where it is at... hence why most biofuels suck, sure they have higher octane, but power per litre is not there.
Ethanol is a good example, ~110 octane, but energy per litre it is worse than normal gas.

[Mr Revhead]

quite true

higher octane wont get you more power unless the car is tuned for it, or the ECU can make use of it.

in the case of the 20v engines, and most other performance engines, the ECU is tuned for japanese 100 octane fuel.


what 91 octane racing classes?

[barryogen]

what 91 octane racing classes?

Nothing in NZ, and just right now I can't find any examples of them.

Most I had read about were smaller single seater series based in Eastern Europe, looked like the formula fords we race(d) here, but one of the regulations was fuel had to be 91 octane, so they made crazy energy/litre 91 octane gas to make them go faster. I'll see if I can find it, but kinda busy with work at the moment. :lol:

[fivebob]

Placebo effect, marvelous thing that.

What I was thinking...

Not necessarily, there can be a difference, even between different brands of 98. But in general it need more timing to reap the rewards of higher octane.

All you ever wanted to know about the difference between 98 and 100 octane http://www.motec.com.au/pdf/fueltest.pdf

[barryogen]

All you ever wanted to know about the difference between 98 and 100 octane ;) http://www.motec.com.au/pdf/fueltest.pdf

Although I don't doubt that the conclusions they came to were correct, the whole thing just smacked of an add for Shell V-Power 100 Octane.

Interesting that on stock ECU there was less than 1% difference, on after market one tuned for it there was quite a bit.

[Adamal]

Be sure to clean out that grey soot from your exhaust pipe or Mr Police-man is gonna get raw on yo ass.

[DexGT]

Placebo effect, marvelous thing that.

No , it works , really it does ,
I don't have any actual proof......... , but my mates friend's brothers father said it made a difference so it must be true .

[HachirokuGTV]

Do all Challenge stations carry 100 octane?
Would it make a difference in a 16v 4age?
Id like to try it in my dirty Legacy twin turbo. If anything happens to it, its no great loss.

[matt dunn]

It will make a difference in the cars that are originally tuned to suit the 100 octane, like the 20V,

but some other cars that are not it will make the same or less power than 98.

Matt