BP Ultimate 102 RON fuel

[CosmosblueMR2]

You can now buy the Apexi Excell software,so i think you'd be able to download various maps to your PFC.

don't much like their small print

If you purchase this software and it doesn`t operate on your computer then nengun performance takes no responsibility.

If you choose to purchase this product you purchase it at you own risk. We have no back up service for this software.

[matt_mr2t]

Thats just covering their back side for WHEN some on with no skill maps it, blows their engine up then tries to blame the manafacturer.

[CosmosblueMR2]

Thats just covering their back side for WHEN some on with no skill maps it, blows their engine up then tries to blame the manafacturer.

no it's covering their bums cos they admit they have had problems with registration and getting the software to work outside Japan..

- There has been some problem with the registration process, we believe we have determined that an email address ending with .jp is required for registration -- though this has not been confirmed --

oh well that's alright then - if you beleive you have sorted it - but then again you hold no responsibilty for the software to work whatsoever . ... sounds like the business to be in !

[Jode]

mmmm id just love to try this stuff out, but i get through enough fuel as it is without at least doubling my costs with this. Cant help but want it though despite the need for mapping etc.
There is also a list of places that sell it on page 11 of Banzai issue 56 June with Phils lovely supercharged v6 in.

[Bry]

After a night of hard driving with the 102 ron fuel,the highest knock value I got was 29,when using optimax I normally hit around 40,so the 102ron fuel certainly does make a difference,the only thing is I'm gonna have to give up eating in order to afford the stuff

[Vindezal]

I can quite clearly feel a difference between Ultimate 97 and Tesco extra value rocket fuel.

Yeah! top end flys! .....and depending what mood your in too

[jonb-]

If you look how much 102ron race fuel costs, then you'll see £2.30 isn't actually that bad at all.

Actually, not amazingly no.

Demon tweeks (which isn't the cheapest place on the planet) sells 105ron race fuel for £65 / 25 litre drum whiich is £2.60 litre.

It's the control fuel for the british GTs and advertised stable up to CRs of 14:1.

Of course you could order the 114 ron Nascar fuel for £68 / drum too.

[BrianUK]

I dont believe that 102 RON will provide an additional 50-60 BHP to be honest.

It it does though, do a conversion to LPG (105 RON) map to it and the performance improvement gained from the higher octane rating should be more than you would lose from converting to LPG = net gain on BHP but at 40p a litre

Brian

[Mark Edwards]

I dont believe that 102 RON will provide an additional 50-60 BHP to be honest.

It it does though, do a conversion to LPG (105 RON) map to it and the performance improvement gained from the higher octane rating should be more than you would lose from converting to LPG = net gain on BHP but at 40p a litre

Brian

For every 1ron you can adjust the ignition advance approx 1 degree, for every 1 degree of ignition advance you can gain a good 10bhp, so taking mine as the example, it's mapped for 97ron, so by using 102ron and advancing the ignition 5 degrees i should gain between 50-60hp. And this is fact, not just something i've made up.

[Al-sw20]

If you still run the stock ecu or a power fc in the trim it came in, it will LOVE 102ron, I read somewhere that under the right conditions the stock ecu can advance up to 17 degrees btdc under boost if theres no knock, this maybe just hearsay but my car runs rather well on 100ron leaded!

To put it in perspectivce the difference octane can make, i put down 253rwhp @ 16psi running 11:1 a/f with my ct20b, dp, exhaust, panel filter etc running 100ron leaded. My mate dynoed 239rwhp with same mods and pod filter but used 98 pump gas 17.5psi, and was running 10:1 a/f !!! If my theory is correct the ecu was not advancing the timing as much as my ecu did because of his lower octane, so even though his boost was higher, the ignition wasn't being advanced as much, so the fuel wasn't being used

[Mark Edwards]

The stock cars were mapped to 100ron so yes, it should make a noticable difference over the usual 97/98 poo we normally use.

[HH]

http://www.bp.com/sectiongenericarticle ... Id=7016848

What benefits might I expect?
In our independent tests in a range of cars, BP Ultimate 102 gave typical power benefits of between 4 and 7.5 per cent above 97 octane BP Ultimate Unleaded when the ignition was remapped. On a high performance, turbo charged vehicle, with boost pressure increased, the power benefits seen included an increase in maximum power of 37 bhp (8.6%), and as much as 60 bhp (16%) at some points in the engine speed range.

[mr tim]

very interesting read , even tho i didnt understand a lot of it !! ..... are ya able to use standard 97/98 ron , and boost it to 102/105 by using an additive ? .... or is that crazy talk ? it would certainly be cheaper than £2.50 per litre !

i used to live in spain , where u can still buy good old 4 star , a lot of people over there use it combined with additives , and have decent results

[Al-sw20]

..... are ya able to use standard 97/98 ron , and boost it to 102/105 by using an additive ? ....

The active chemical that increases octane in octane boosters is tolulene, you need a whole lot more than a 500ml container of the stuff to even raise it to 99 octane when mixed with a tank of 98.

[BrianUK]

What benefits might I expect?
In our independent tests in a range of cars, BP Ultimate 102 gave typical power benefits of between 4 and 7.5 per cent above 97 octane BP Ultimate Unleaded when the ignition was remapped. On a high performance, turbo charged vehicle, with boost pressure increased, the power benefits seen included an increase in maximum power of 37 bhp (8.6%), and as much as 60 bhp (16%) at some points in the engine speed range.

So even BP suggest a performance increase that equates to 38.4 BHP on a REV III - and that includes upping the boost pressure as well? And that makes the figure meaningless as it doesn't say how much the boost was increased by...

The only credible figure that can be taken then is the 8.6% improvement which would work out at about 21 bhp.


£92 to fill your tank!!!

Brian
(General Motors)

[SimonPearse]

..... are ya able to use standard 97/98 ron , and boost it to 102/105 by using an additive ? ....

The active chemical that increases octane in octane boosters is tolulene, you need a whole lot more than a 500ml container of the stuff to even raise it to 99 octane when mixed with a tank of 98.

toluene is only one of the range of fractions that can be used, and since octane is in itself a fraction it's more correct to talk about octane rating rather than octane (since by definition you cant have greater than 100% octane)

[SimonPearse]

I dont believe that 102 RON will provide an additional 50-60 BHP to be honest.

It it does though, do a conversion to LPG (105 RON) map to it and the performance improvement gained from the higher octane rating should be more than you would lose from converting to LPG = net gain on BHP but at 40p a litre

Brian

For every 1ron you can adjust the ignition advance approx 1 degree, for every 1 degree of ignition advance you can gain a good 10bhp, so taking mine as the example, it's mapped for 97ron, so by using 102ron and advancing the ignition 5 degrees i should gain between 50-60hp. And this is fact, not just something i've made up.

it's not quite that simple,you need to consider the calorific value of the fuel as well. LPG has good resistance to detonation, but low calorific value so an lpg conversion will normaly give a reduction in power output. Water has fantastic anti-knock properties, but you dont get much power out of it!
The ideal ignition timing is whatever figure causes maximum bmep. If you over advance (even without causing detonation) you loose power, it's not a simple case of more advance=more power. The timing needs to be advanced (before) tdc to allow time for the flame front to propogate, since it takes a finite time we need increased advance at higher revs. An engine that needs an extreeme level of advance is likely to be suffering from other combustion problems (usualy poor scavenging caused by bad exhaust manifolding) that cause uneven flame propogation.

[Mark Edwards]

Another over complicated answer from you.

We're not all rocket scientists.

What i said works, we're talking normal road fuel that we all put in our cars and not any of the more unusual stuff. Keep it simple.

[luthor1]

1 degree of advance is 10bhp?

I am assuming that only works on Turbo engines? ...since going from 95 to optimax 98 in the mk1 and advancing the timing 3 degrees certainly won't yield me 30bhp

[Mark Edwards]

1 degree of advance is 10bhp?

I am assuming that only works on Turbo engines? ...since going from 95 to optimax 98 in the mk1 and advancing the timing 3 degrees certainly won't yield me 30bhp

Yes sorry, that's for a tubby.