Ive been told that premium is only good to use once a month to flush out the s#!t in yur engine and if u use it too much it wears away the parts,

but then again some engines recommend the use of the higher octane

ne ideas on the magna engine ?
is it bad to just use premium ?

i only run BP Ultimate in my car since re-locating back to the city!! but hey - i honestly don't know!!

Manual

i use to only run unleaded, but im now running Premium (will move to BP Ultimate) cos my Haltech is getting installed properly 2 morrow :D:D

oh, and for the record.. ive ordered the very same cold air induction that the Magna TT has 8)

a whole re location of the pod to the hole in the front bumper.. ahh.. how cool is that ;)

i will post pics + a new dyno sheet when finished at the end of next week :cry:

Yeh i only ever use BP Ultimate
only 72c so not much of a price diff from 68c for normal
:D
hey GBM which hole in the bumber are u talkin about ?

yeah i am currently paying about 89c for BP Ultimate!! bit more dear than you - but still better than 1.20 like i used to pay!!

Manual

Yeh i only ever use BP Ultimate
only 72c so not much of a price diff from 68c for normal
:D
hey GBM which hole in the bumber are u talkin about ?

well we are paying 1.12 :evil:

and the hole im talkin bout is the hole where the fog lights normally go :D

is there any other places to put it ?
caz i got the lights and dun really wanna get rid of them

is there any other places to put it ?
caz i got the lights and dun really wanna get rid of them

nuh, your stuffed. ;)

seriously.. i donno... have a bit of a play around in the area.. maybe int eh grilly part of the front bumper next to the lights.. you can cut small slits or somethin>?

yeh possibly,
there is a bit of room in that little grill part,
just have to stuff round with it i spose, see if the pod will fit, if not maybe just put some pipe goin up to the pod,
at the moment just have the origianl induction scoop goin straight onto the pod

That whole urban legend of high octane hurting your car is bullshit.

I'm just curious, when I do the A/F and computer, do u guys reckon I should have it tuned to run premium? or should I stick with regular?

I'm just curious, when I do the A/F and computer, do u guys reckon I should have it tuned to run premium? or should I stick with regular?

with the mods you plan to do.. no doubt premium is what you want :)

the real 'premium' is the BP Ultimate 98.. everthing else is dodgy!

tune it with premium....the quality of the fuel is getting quite poor :cry:

Killbilly is right in saying the urban myth about ultimate ***ing your engine.

Its Octane booster. It should only be used atleast once every 3 months to clean out everything...used any more and there is a chance itll mess ya engine...or burn out your cat-converter.

DSL, im confused.. killbilly said


That whole urban legend of high octane hurting your car is bullshit.

which to me, hes suggesting that the high octane fuel wont do harm, but your contridicting the story by saying "It should only be used atleast once every 3 months to clean out everything...used any more and there is a chance itll mess ya engine...or burn out your cat-converter"

huh??? or did you read killbillys post as "That whole urban legend of high octane hurting your car is ture."

cos im confused? :?

slow northern folks :badgrin:

If u use ultimate, optimax...they say it is not good to also add octane booster, whcih will boost it up to 100+ octance. not good for engine or cat.

U can once every 3months min. add it higher octance fuel...but with normal octance, its not so bad adding a octane booster.

Therefore to sum it all up i am correct to say that you can run high octane fuels - ie optimax and BP Ultimate - but not meant to add octane boosters to make it higher than 100 RON fuel.

Where as if u r just using normal unleaded or PULP then it is ok to add octane booster because then you are still only reching 97/98 RON!!

Are cars are not tuned to run +100 RON fuels!! that is why jap cars are detuned to run in aus - we don't have high enough RON fuels!!

Manual

Correct Manual the fuel quality (octane level) in Japan and most of Europe is significantly higher in RON even compared to our optimax etc 8)

ahhh.. thanks for clearing that up fellas.. i was a bit confused for a min :?

[quote:647845eda5]Are cars are not tuned to run +100 RON fuels!! that is why jap cars are detuned to run in aus - we don't have high enough RON fuels!! [/quote:647845eda5]

is it possible to 'tune' my car for 100+ron with my haltech?

ie run different maps according to what fuel im using?? :D

so ill have a 'everday map' on like standard unleaded...
and have a 'friday/saturday nite' map where ive filled up with BP Ultimax and a octain booster ;)?

muh ahhaha!

Its an idea BOOYA (do u eva stop thinking?). But even thow it states that your petty is 98ron, youl be lucky to ever have it at that level!

Sorry if I was confusing booya.

It doesnt hurt your engine.

I've used it the whole time I've had my car barre 2 moths as I had not much money.

Never had a problem..I had minor probs when I changed to regular...but not when I went to premium.

I'd also like to add you'd be lucky to get 2 points out of an octane booster on 98 ron petrol

It's an exponentially declining curve

[quote:0118dad735]so ill have a 'everday map' on like standard unleaded...
and have a 'friday/saturday nite' map where ive filled up with BP Ultimax and a octain booster ? [/quote:0118dad735]

Thats a very nice way of putting it booya :lol:

[quote:ed114a72de]so ill have a 'everday map' on like standard unleaded...
and have a 'friday/saturday nite' map where ive filled up with BP Ultimax and a octain booster ?

Thats a very nice way of putting it booya :lol:[/quote:ed114a72de]

but its trus :lol: im gonna dyno tune 2 maps so i can adjust according to which day ;)

Days? pfff...tune a few different moods...that would b kool!

Imagine 'cruisey mood' compared to 'i wanna hit someone mood' :badgrin:

BP Ultimate, wouldn't torture my baby with anything else.

Ok a lot of people mention it but I'm in need of a solid answer on the whole tuning for premium unleaded petrol issue. Basically I've tried most fuels now and did find BP ultimate to be the smoothest feeling of the lot. Only performance mods on my car is a lukey exhaust and soon to be K&N panel filter. I will probably continue to use nothing but BP Ultimate (small price to pay for peace of mind) so what is involved in tuning the car for this petrol? Basically I'm happy with the 98ron for smoothness but if I'm paying for it I'll take the performance as well :) I've read things about advancing timing etc but what I want to know is what has to be done to make my car act like it was built for 98ron? I'm not looking at getting a chip but if thats the only way of doing it fair enough just wanted to check if theres a simple setting or screw that can be adjusted.

really don't think that made much sense but yeah its been bugging me for a while :)

Advancing the timing is one thing you can do. You can get your car retuned to take advantage of the 98 RON fuel, I think they advance the timing in that anyway.

But remember if you tune your car to 98 (and ESPECIALLY if you advance the timing) you will have to use ONLY 98 ron fuel
Otherwise bad things can happen

Pinging, detonation..all sorts of evil things!

Thanks for your reply killbilly. Yeah I understand that but I figure I'm going to use 98ron anyway I may aswell get a performance boost. Am I correct in presuming advancing the timing would give me a boost over the smoothness I currently feel from the petrol? Also is this the kind of tuning you get done when your car gets dynoed. Also I noticed you said one of the things you can get done, does that mean there are others? Is there a reason this advancing of timing is often talked about as a mod for the car, I'm constantly reading about pod's and CAI but nothing as simple as adjusting the car for the special fuel most of the people here seem to use. Sorry if any of these questions are a bit simple or stupid

Even if you advance timing and can't fill up with PULP you can still use regular ULP just to get you to the next fuel pump where you can fill her up.

Just don't give it a fist full.

Blake in this post you mentioned you only use bp ultimate like I do. Have you adjusted your car at all eg timing to compensate for this? If so how? and did you notice any difference and if you havn't changed anything is there a reason for that as well?

Yeah you MIGHT be able to use ULP..

If you hear any pinging..then you'd wanna keep some tools handy in your car so you can retard the timing quick smart.

Blakes right...you could get away with it...just be careful!

I've never adjusted timing though i should considering i never use anything but ultimate. My car is going in this week for a major service and to retune the timing belt so i will get it done then and report my findings.

ok here we go..

if im gonna use BP Ultimate now on.. which i will..

and when we travel to Adelaide in November.. there will be at least 3 stops in a row where there wont be Ultimate? what will be the best bet?

1) Carry at least 2 jerrys of Ultimate :?
2) take it easy and just use the ulp
3) put GBM on the back of car trailer and tow it to adelaide :P

now i wanna at least rule out number 3 :S

just take a bottle of octane boost and knock the RON from 92 up to 95-96 and take it easy

Ok Blake that would be great look forward to your findings.

I'm just truly amazed no one appears to of done it. Everyone spends lots of money and time on different modifications to there car but a possibly cheap/easy mod with very little downside doesn't seem to be brought up much.

I'm presuming theres an obvious reason I'm missing but if you have made the decision to use nothing but quality fuel why not have your car set up for it?

I'm strongly considering getting a dyno to ease my mind and I guess you could get timing adjusted at this stage. My question is when my car is due for service (still has 3 years) will it simply be tuned back to standard defeating the purpose of it being done

gbm have you actually adjusted the timing? I know you have a chip which may change other things for the fuel but I'm looking for modifications that can be done on a pretty much stock engine

what's octane boost worth these days? and any particular brands?
cos with this haltech, i dont wanna break it! :lol:

To be honest i never even thought of it.

however doesn't advancing the timing consume more fuel?

Booya your up for between 10-20 bucks that'll last you approx 3 tanks. the more expensive the more octane they add. When my mum used to have her supercharged V6, when she went away i filled up with optimax and added a bottle of octane boost (est RON - 102) and it was the only time it chirped into second gear. Then i went silly and took out the panel filter to gain extra boost. Risking "the motor go bang show" the car went off its tits. Neva seen a statesman drift like it since.

Anyway, Nulon Octane Boost is the shit

To be honest i never even thought of it.

however doesn't advancing the timing consume more fuel?

heh well hopefully we're onto something now :)

no idea thats beyond me my knowledge is purely based on what I read around here. I just figured some cars are detuned and lose power to adjust to our standard unleaded so hopefully adjusting them for good fuel helps

so you reckon one bottle will last 3 tanks eh? what about one bottle to one tank ;)

seriously, would i see any advantages?? (assuming im already using BP Ultimate;))

I used some octang booster given to me which apparently got it up to 102 using RON98 (premium)

And BLARDY HELL i noticed the diff, the 2.4 just came to life baby! :D

I used some octang booster given to me which apparently got it up to 102 using RON98 (premium)

And BLARDY HELL i noticed the diff, the 2.4 just came to life baby! :D

well ive got a mate in the fuel business, so it looks like ill be getting some HIGH octane cartons delivered to my door ;)

hehe. another serious note.. when im traveling to adelaide, and can only use ULP, should i only use the bottle to fill one tank, or use one bottle for one tank?? i think the 1:1 is better for what im about to tune my haltech to... right???? :?

You do notice the difference, i've used it in a supercharged holden and my magna, i especially noticed the power difference right where peak torque comes in, there was a lot more go.
But the reason your asking about octane boost is for you to make it to adelaide. With ULP and boost it'll bring up ur octane so you can leave your Halteck settings with it should do

You do notice the difference, i've used it in a supercharged holden and my magna, i especially noticed the power difference right where peak torque comes in, there was a lot more go.
But the reason your asking about octane boost is for you to make it to adelaide. With ULP and boost it'll bring up ur octane so you can leave your Halteck settings with it should do

Thanks TZABOY, that was the full answer i was looking for. :D if only you could come to the magna meet ;) :D:D

actually one more queston..
do you put the booster in BEFORE the fuel or after? what is better..
i thougt in before so the fuel entering will mix wit the booster, but then... errr....

before, so when you fill up it mixes in with all the fuel. Also look at the bottle you use and make sure you don't exceed the amount of boost you put it, if you over load the tank with boost, the injectors will shit themselves

[quote:f88819842a]if you over load the tank with boost, the injectors will shit themselves[/quote:f88819842a]

:? id better put on my reading glasses when i do this then ;)

Yeh i only ever use BP Ultimate
only 72c so not much of a price diff from 68c for normal
:D
hey GBM which hole in the bumber are u talkin about ?

foooooooooooooooooooooC Offff.. no way!!
they got prices gowing 86 unleded and 93 or some high 90's For Premium :S

Hey Pines_apple thats qld for ya :D

If your car is tuned for 91 oct like a maggie engine, then i read that you wont get any pwr gains from putting higher oct petty in your car. :shock:

the only advantage is the cleaning agents in premium and it helps stop knocking.

thats why they said only need to put premo in you car after every 3rd or 4th refill.

saves money that way too, and you still keep your engine clean. ;)

i only run mine of normal unleaded cos sydney petty costs heaps 82-84 cents for normal unleaded and i get approx 750km out of a tank full with the air con on all the time! 8)

i use premium cause there isnt any ethernal in it unlike regular :lol:

i use premium cause there isnt any ethernal in it unlike regular :lol:

Same here optimax is the sh!t

Theres no ethanol in regular petty either as long as you dont buy it from the dodgy petrol stations in west sydney.... :lol: :lol: :lol:

Any petrol station that has enthanol in their fuel MUST have a sign that says so. (dunno if they have to have the %age tho) But they cannot exceed 10% ethanol anyway.

But whether or not they DO have a sign is a different story. :roll:

I've been thinking of the exact same thing since I bought it 'cause I only use Optimax...have done ever since it came out...much better than most of the other regular ULP crap.

Anyway the short answer of it is YOU CAN'T! The igniition timing of the 3.5 is controlled entirely by the ECU. It's ignition map has been programmed specifically for it to run reliably on a min of 91 RON fuel but does not adjust for higher octane fuels. Using PULP in the 3.5 may give you the impression that the car is "smoother" as the fuel burns cleaner than regular ULP, however, it wont give any significant power increase.

The safest option would probably be to put in a piggy back chip which is tuned for PULP. If you use that most of the time, and switch back to the normal ULP for a couple of tank fill ups where PULP isn't available, as long as you take it easy, the ECU will retard it's timing when the knock sensor kicks in. *BUT*....bear in mind...the ignition map of the ECU has limited range so it can cause some serious damage if you did decide to put your foot down a bit.

Most cars that require min 95 RON can run safely on 91RON if you take it easy, although, it's generally recommended only 1 or 2 tank fills before you need to fill up with the 95 RON again. 91 RON fuel CANNOT safely be used in a car designed for 98 RON fuel unless you use fuel additives (read "Octane Booster and fuel detergents").

Anyway the short answer of it is YOU CAN'T! The igniition timing of the 3.5 is controlled entirely by the ECU. It's ignition map has been programmed specifically for it to run reliably on a min of 91 RON fuel but does not adjust for higher octane fuels. Using PULP in the 3.5 may give you the impression that the car is "smoother" as the fuel burns cleaner than regular ULP, however, it wont give any significant power increase.

But what about the added bonus of having a denser fuel in the tank which gives you more kys opposed to regular fuel :? or was every fuel co telling porky pies :evil:

Do a bit of research about Optimax on the internet, especially on Subaru forums, and you fill find out that a group of Suby enthusiasts bought optimax from a heap of different servos and got the fuel tested.

(they had been having doubts about it)

Only to find that variances in what was called Optimax and what was regular ULP was massive between different servos. One of the servos was selling the same stuff as both ULP and Optimax.

Anyway, to end my rant, they came to the conclusion that optimax was shit unless you could guarantee it's source, whilst the Mobil stuff was extremely consistent between servos and had the best octan (or whatever) levels.

The end. :D

[quote:bb4390e9a9] whilst the Mobil stuff was extremely consistent between servos and had the best octan[/quote:bb4390e9a9]

so then i wonder why the BP Ultimate is rated so highly, when the MOBIL stuff seems to be 'the shit'

??

I read in some mag a while that BP claim that Ultimate is the "cleanest" fuel available in Australia.

Yes, using the higher octane fuel can definately give you better fuel economy (due to the physical properties of the actual fuel). Sorry, I was mainly talking about no real increase in the power/torque of the 3.5. The old 3.0 in the TR/TS is actually different...it's ECU has an ignition map which already increases the ignition timing when using 95 RON (but it wont further increase if you use 98 RON)!

I'm actually starting to believe that about Optimax....I'm going to convert to BP Ultimate from now on I think. My brother has an '03 Subaru Liberty and the Suby dealer up in Bendigo basically told him to stay away from it...they've had a lot of brand new WRX's come back in running like sh*t when they've been run on Optimax. They drain the tanks and tell the owners to run them on BP Ultimate :?

Thanks for the information MagnaLE. I definately notice a difference between optimax and ultimate with the later being the better. Ok so from what you've said adjusting the timing for 98ron fuel in a 3.5l v6 is not possible without a chip?

I actually reckon that Synergy 8000 is the best.

Oh well..each to their own.

So Bp sell Opitmax cause my BP only sell Premium Unleaded spose i better have a look and a different (larger BP)

is BP Optimax the 95RON petrol that they sell cause i just noticed they also sell 92RON both premium

who wants a free tank of fuel? i filled up last night and then boom cant use mah car no more

who wants a free tank of fuel? i filled up last night and then boom cant use mah car no more

yer man, just bottle it and send express post.. ;)

Stop!

You're all getting them confused

Optimax is Shell.

Ultimate is BP

Synergy 8000 is Mobil 1

They're the only 3 with 98 RON

There's Vortex which is Caltex, but AFAIK its only 95 RON.

Dont confuse yourselves..lol