Jump to content
SAU Community

Recommended Posts

on 98 (ultimate/optimax) previously had to pull boost back a touch to prevent higher knocks,

on 100 (extreme/Vpower racing) have been able to re-up boost to as previous yet rarely get a high knock.

(pfc is still tuned to 98 fuel as would hate to get stuck in stix with wrong tuning to fuel available.)

works for me,

john.

tyred on my R33 GTST S2 for the first time about a week ago (shell near garden city), it certainly feels a lot better, no mods just exahust and still stock ecu !!.....

and hense petrol is anyway 10 cents cheaper here in brisy then in melbourne (moved up 1 month ago)..the price still feels better.....

im pretty sure its now called v-power coz thats what its called in europe. sort of a would wide standard.

ps. anyone ever read the "new unleaded" brocher where it "gets you further"

down the bottom it says in a small disclaimer that the fuel used during the test is "diferant" from what is curently available localy lol so yah it doesnt get you further lol

i have a question - I pumped up with v-power today (had a quarter tank of ultimate left). Came to about 33 ltrs - but then it only came to 3/4 tank full :(

would there be something to do with expansion of the fuel or is it just that my guage is stuffed? Im guessing my gauge is stuffed.

Yeah sounds like the gauge is stuffed. Did your fuel light come on though?

nah cos i filled it up when there was quarter tank of petrol....its just wierd - i will see how it goes when i fill it next time (if i get to fill it before my next service). I do know that skyline fuel gauges are notorious for being faulty.

SK

With your head work, have you run it up on the dyno?

Have you found higher power figures, different boost curve, faster or slower to boost, better or worse economy and response?

Thanks

BASS

SK

With your head work, have you run it up on the dyno?

Have you found higher power figures, different boost curve, faster or slower to boost, better or worse economy and response?

Thanks

BASS

Hi, not on the dyno, I am road tuning it. At the moment, with the standard turbo, I have 10 psi at ~2,000 rpm because of the ignition advance I can use, +18 degrees (compared ot the default maps) at many load points. As a result the response is lightning fast.

As for ecomomy, it happily runs 15.1 to 1 A/F ratios at cruise (open loop), with absolutely zero hesitiation or surge. So I can confidenmtly change the lambda aim table when I turn closed loop back on.

:( cheers ;)

SK. So headwork is a good option on a car, if for instance you are bored and want to pull the head off and have get it tidied up?

You won't loose any grunt?

without changing valves and all that, do you see it as a good thing to do once you have done turbo, injectors etc etc.

How does it go on the $ / results graph?

Just going back to the title of the thread for a second while we wait for God to respond... I used some of this fuel on the track the other day.

I was expecting to be able to put some more ignition timing in it but knock levels didn't decrease with the change of fuel so I left it alone. I felt maybe 5 more rwkw. However much is the smallest amount I can feel using the seat-of-the-pants-o-meter.

  • 1 month later...

As postred in the other thread where you asked the same questions

Been using 100 ron in the R33GTST since January (almost 12 months). I put an adjustable FPR in recently to raise the fuel pressure and a GTR fuel pump. I checked the fuel lines at the same time and they are in perfect condition.

:D cheers :D

is it me or why do i still think that my car feels nicer and smoother and 'quicker' on Vortex 98 even compared to V power racing?

Car: R33 gts-t (auto) with basic mods

my best mate with a stock R33 Gts-t Manual has the same opinion?

Edited by dineth
  • 3 months later...

ive been running vpower now 4 about 2 months in teh 1st week the motor started to run cleaner rev more freely and this improved all week. ive gone bac and tried ultimate etc and

also fuel economy when drivin normally (not v often 4 me lol ) has improved (550 km per tank good? )_

those out there using the ethanol blends from the discounters beware there some dodgy servos (no way ? :( ) out there upping there eth blend to cut costs........

As postred in the other thread where you asked the same questions

Been using 100 ron in the R33GTST since January (almost 12 months). I put an adjustable FPR in recently to raise the fuel pressure and a GTR fuel pump. I checked the fuel lines at the same time and they are in perfect condition.

:rofl: cheers :rofl:

So have I. seems to be great.

I have a 100RON joint near my house..I only drive the car 1 time per week so the extra cost means nothing to me.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Very nice - I also have a 92 GTST and hardly see any others around these days
    • When I need something else to edit, I use Movavi. A friend who does video editing on a daily basis recommended me) it's an easy video cutter to use for beginners
    • I need to edit some videos for work but I'm not good at all this. Which video editor can you recommend?
    • I think you're really missing the point. The spec is just the minimum spec that the fuel has to meet. The additive packages can, and do, go above that minimum if the fuel brand feels they need/want to. And so you get BP Ultimate or Shell Ultra (or whatever they call it) making promises to clean your engine better than the standard stuff....simply because they do actually put better additive packages in there. They do not waste special sauce on the plebian fuel if they can avoid it. I didn't say "energy density". I just said "density". That's right, the specific gravity (if you want to use a really shit old imperial description for mass per unit volume). The density being higher indicates a number of things, from reduces oxygen content, to increased numbers of double bonds or cyclic components. That then just happens to flow on to the calorific value on a volume basis being correspondingly higher. The calorific value on a mass basis barely changes, because almost all hydrocarbon materials have a very similar CV per kg. But whatever - the end result is that you do get a bit more energy per litre, which helps to offset some of the sting of the massive price bump over 91. I can go you one better than "I used to work at a fuel station". I had uni lecturers who worked at the Pt Stanvac refinery (at the time they were lecturing, as industry specialist lecturers) who were quite candid about the business. And granted, that was 30+ years ago, and you might note that I have stated above that I think the industry has since collected together near the bottom (quite like ISPs, when you think about it). Oh, did I mention that I am quite literally a combustion engineer? I'm designing (well, actually, trying to avoid designing and trying to make the junior engineer do it) a heavy fuel oil firing system for a cement plant in fricking Iraq, this week. Last week it was natural gas fired this-that. The week before it was LPG fired anode furnaces for a copper smelter (well, the burners for them, not the actual furnaces, which are just big dumb steel). I'm kinda all over fuels.
    • Well my freshly rebuilt RB25DET Neo went bang 1000kms in, completely fried big end bearing in cylinder 1 so bad my engine seized. No knocking or oil pressure issue prior to this happening, all happened within less than a second. Had Nitto oil pump, 8L baffled sump, head drain, oil restrictors, the lot put in to prevent me spinning a bearing like i did to need the rebuild. Mechanic that looked after the works has no idea what caused it. Reckoned it may have been bearing clearance wrong in cylinder 1 we have no idea. Machinist who did the work reckoned it was something on the mechanic. Anyway thats between them, i had no part in it, just paid the money Curiosity question, does the oil system on RB’s go sump > oil pump > filter > around engine? If so, if you had a leak on an oil filter relocation plate, say sump > oil pump > filter > LEAK > around engine would this cause a low oil pressure reading if the sensors was before the filter?   TIA
×
×
  • Create New...