R33 Tuned For 100 Octane

[and3_3]

Hi everybody,

I bought my gtst with all the basic mods and its power fc which was tuned for 100 octane petrol. The previous owner says it was tuned on a shell petrol which didnt have ethanol in it (not V-power racing which i dont like as its 20c more), so my question is since if run i it on 98 octane is there something i should adjust on my hand controller to accomodate to the lower octane petrol?

Thanks!

[dezz]

the shell 100 has ethanol in it....

but now that its being removed, you'll need a retune.

[R31Nismoid]

Hi everybody,

I bought my gtst with all the basic mods and its power fc which was tuned for 100 octane petrol. The previous owner says it was tuned on a shell petrol which didnt have ethanol in it (not V-power racing which i dont like as its 20c more), so my question is since if run i it on 98 octane is there something i should adjust on my hand controller to accomodate to the lower octane petrol?

Thanks!

Well you've contradicted yourself.

Tuned for Shell without ethanol means it was V-Power, the 98

The 100 was V-Power Racing, which had ethanol, and is not discontinued

So based on what you said, your car is already tuned for 98... so if you've been putting 100 in there, you've sadly been wasting your money.

So if you just muddled yourself and you indeed WERE tuned on 100, you will need to be re-tuned for 98. Simple as that

[croat]

as nismoid said you should 98 is v-power, 100 is v-power racing with ethanol. I have read somehwere that shell is slowly phasing out its v-power racing fuel so i would not get a retune with it.

[and3_3]

Yeah somehow the previous owner had 100 octane shell petrol in it for the tune, he said it didnt have ethanol in it but he may have been mislead. Who knows.

So a WHOLE retune is required to have the car running optimally?

[tridentt150v]

I'd check the knock levels on the handset first, if the readings are OK, I wouldn't worry too much about it and just get it done whenever [the tune].

Sounds like the last owner didn't know what they were talking about [some confusion over fuels], so it could be that your tune is already OK as it is.

Suck it and see.............

[RusH_]

yes, v-power racing is being phased out, for the most part it should be gone by the end of the month

[Duncan1]

Well you've contradicted yourself.

Tuned for Shell without ethanol means it was V-Power, the 98

The 100 was V-Power Racing, which had ethanol, and is not discontinued

So based on what you said, your car is already tuned for 98... so if you've been putting 100 in there, you've sadly been wasting your money.

So if you just muddled yourself and you indeed WERE tuned on 100, you will need to be re-tuned for 98. Simple as that

V-Power racing has been discontinued on the gold coast where i am and i suggest in many other places

[nizmonut]

this thread is redundant

100 octane is standard factory issue.

skylines from factory are tuned for 100 octane cause in japan thats the lowest octane they have....exept diesel obviously.

stick 98 in the tank and alter the timing the timing a couple of degrees.

[and3_3]

Knock levels aren't too bad actually, i had some trouble with it before but i think the boost wasn't tuned correctly (liked to spike).

I switched from bp ultimate to normal v-power last week and i havent seen knock over 25.

I'll take it to the drags and see how i go.

Nizmonut, so i retard the timing by the odd degree?

[Guilt-Toy]

if you have a hand controller you can PM me, il give you my number and il go through with you on the phone how to take some timing out of your map, in summer you will notice a raise in knock

[and3_3]

in summer you will notice a raise in knock

Yeah thats definately true actually, summer was when i was having problems....

I'll let you know when i have time to do it, and we can sort something out, thanks for offering to help. (sick r33 btw )

[tridentt150v]

if your only getting 25 in summer, you have absolutely no problem - you'd only be getting 10 in winter and 60 is the danger threshold.

[Beer Baron]

this thread is redundant

100 octane is standard factory issue.

skylines from factory are tuned for 100 octane cause in japan thats the lowest octane they have....exept diesel obviously.

stick 98 in the tank and alter the timing the timing a couple of degrees.

lol. that is a good one. 100octane is the lowest in japan. I'm sorry mate but that's simply not true. having been to japan many times, and driven cars in a number of different cities (tokyo, osaka, kyushu, chiba, saitama) I can tell you 100octane is pretty much the bees knees. hi-oku blend. regular unleaded there is like 94 octane. good fuel 98 or so, and yes they have hi-oku 100ron fuel too. but no factory car would be tuned un-able to run on 98 or even 96. this myth came about when high performance cars designed to run on 95 or 96 octane fuels were run on fuel in aus that at the time was 90-92 at best. things have come a long way since then and the gap between japanese fuel and australian fuel is not that great.

[9krpm]

V-Power racing has been discontinued on the gold coast where i am and i suggest in many other places

Is United doing the same thing with their Boost 98?

Unless the car is tuned on the edge, running Vpower 98 fuel shouldn't be a problem. You will get more petrol into the cylinders compare to vpower racing and find that the car is alot richer. You will be down on power as well.

Have you try the freedom 98? It has 10% ethanol as well and is only 2 RON lower than Vpower racing. If knock reads higher with the freedom fuel then pull the timing back by a few degrees until knock reading goes back to normal.

[R31Nismoid]

V-Power Racing is only a Shell brand. Nothing else has changed

[9krpm]

V-Power Racing is only a Shell brand. Nothing else has changed

So they still have the 100octane fuel (98 octane +10% ethanol)?

[pj-33]

u can buy this shell race petrol in a drum but its expensive i used to buy it from autobarn but you need a cams licence but if you no someone it should be all sweet buddy... try autobarn 2moz man