Boost98 V Extreme100

[m&m]

Last week I had my GTR tuned on Boost98 for a dyno figure of 351rwkw.I used Boost98 after reading the article in HPI by Martin Donnon.

The car ran great with knock readings in the mid 30's,till the weather got hot,where I recorded low 70's.Nigel(Ice Performance) suggested we retard the timing 2 degrees and see what happens.Single digit knock,so we tried 1 degee retarted,where we got mid teens and left it there.The car is going back in for cam timing adjustments,so I just adjusted the timing in the settings screen,I had to do it every time I restarted the car.

Today,I was near a Shell servo that stocks Extreme100,so I thought I would fill up(47 litres) and test it out.I am now running 3 degrees advanced over the original setting on Boost98,thats 4 degrees more timing!!!!! and recording mid teens on the knock sensor.

I will be using this fuel on my next tune in the New year,highly recommended.

Between now and my next tune,I will try Ultimate to see how it compares.

[SimonR32]

dyno results would be a bit more accurate

but sounds promising

pitty we dont get anything other that u98 in perth

[someonestolecc]

wtf is extreme100? Is that the ethanol fuel?

[m&m]

There are 2 Ethanol fuels.E10 has 10% and is sold by United as Boost98 and E5 has 5% and is sold by Shell as Extreme100.

Dyno figures are bound to go up dramatically as we had 365rwkw and had to knock out some timing using the obviously inferior Boost98.The 100 octane Extreme looks very very promising,allowing 4 degrees of extra timing while keepoing the knock lower,should also allow a little more boost.

[Robo's]

I also noticed Extreme 100 reducing my knock levels

[BookyVL]

As did I...

[RS500]

Last week I had my GTR tuned on Boost98 for a dyno figure of 351rwkw.I used Boost98 after reading the article in HPI by Martin Donnon.

The car ran great with knock readings in the mid 30's,till the weather got hot,where I recorded low 70's.Nigel(Ice Performance) suggested we retard the timing 2 degrees and see what happens.Single digit knock,so we tried 1 degee retarted,where we got mid teens and left it there.The car is going back in for cam timing adjustments,so I just adjusted the timing in the settings screen,I had to do it every time I restarted the car.

Today,I was near a Shell servo that stocks Extreme100,so I thought I would fill up(47 litres) and test it out.I am now running 3 degrees advanced over the original setting on Boost98,thats 4 degrees more timing!!!!! and recording mid teens on the knock sensor.

I will be using this fuel on my next tune in the New year,highly recommended.

Between now and my next tune,I will try Ultimate to see how it compares.

<{POST_SNAPBACK}>

which shell servo was this m&m?

[m&m]

Cnr Warrigal Rd and Centre Dandenong Rd Cheltenham,near DFO.

There are 5 shell servos on Burwood Hwy and 1 in St Albans as well.

[RS500]

Cnr Warrigal Rd and Centre Dandenong Rd Cheltenham,near DFO.

There are 5 shell servos on Burwood Hwy and 1 in St Albans as well.

<{POST_SNAPBACK}>

thanks for that.

burwood hwy is a bit out of the way for me, so i'll have to try my luck in st albans.

[thrtytwo]

what are knock levels ?

[Busky2k]

Generally you loose power with ethanol blended fuels, so you have to advance the timing to get some of the power back. The good thing is, with careful tuning you can get good gains over the regular 98 RON stuff.

[FAST-GT-R]

Generally you loose power with ethanol blended fuels, so you have to advance the timing to get some of the power back. The good thing is, with careful tuning you can get good gains over the regular 98 RON stuff.

<{POST_SNAPBACK}>

New 100octane shell fuel with 5% ethonal is what you want. you will not lose any power , you will gain timing,response and power.

[someonestolecc]

Hmm.... I'm still apprehensive about ethanol, although it would be good to put some timing in I might crack 200rwkw on a happy dyno without cams.

....

stupid magical 200 figure ... I'm such a pleb.

[discopotato03]

I did some research ito fuel octane and detonation and have to wonder why the ethanol was added . I sort of though that the alcohol helped to make any condensation soluble but I'm beginning to wonder if slower burning high octane fuels need a bit of help at the cold start phase . The mighty 3 cyl G11 ran like a hairy goat at the first cold start on the Shell 100 but runs fine on it now . If anything it make a little better part throttle torque and the choke (showing its age here) is never needed .

It will be interesting to see if the other flavours of 100 octane fuels will have ethanol in them .

Cheers A

[32DET]

Is this optimax extreme safe to run on a standard rb20 engine without fiddling with the timing or touching anything?

[Busky2k]

It should be perfectly fine. 5% ethanol isnt anything to worry about.

Just wish this stuff was in SA!

[B Frank]

You guys should go and check out the Shell Optimax Extreme web site. It should answer all you question about the fuel and locations of where to get it.

www.100octane.com.au