I'm guessing it did, which is why he's sad that it's about to run out.
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05-14-2009, 01:53 PM | #151 (permalink) |
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I'm guessing it did, which is why he's sad that it's about to run out.
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05-14-2009, 01:54 PM | #152 (permalink) |
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I wouldn't expect it to without a tune. The MAS/MAF whatever in the intakes and the A/F meters in the headers can retune for a lot of things, but I don't think they're capable of retuning themselves for higher octane. I would suspect all it does it buy you extra insurance against knock/detonation.
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05-14-2009, 01:55 PM | #153 (permalink) | |
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Quote:
Dont forget the wonderful race gas smell, too...mmmmmmm...
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05-14-2009, 02:59 PM | #154 (permalink) |
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LOL, maybe he was just enjoying getting high on the fumes
I was also under the impression that the car only "detuned" for low octane to prevent knock. If it can up-tune as well that would be really cool. |
05-14-2009, 04:00 PM | #155 (permalink) |
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I think the issue there is that the car doesn't have any way to 'sense' the increased octane to account for it. It can sense too little octane, but only the hard/indirect way, by noticing knock and backing off to eliminate it.
Hence the need for a different flash/tune to take advantage of race gas. One of the things I like about the UpRev stuff I was reading is that they can store up to 5 maps in your reflash and you can switch them via the cruise control buttons without reflashing again. You can have an easy-going map for light driving and/or questionable fuel, an all-out on 93 pump gas map, a 108 race gas map, a valet map, etc. |
05-14-2009, 04:08 PM | #156 (permalink) | |
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05-14-2009, 04:13 PM | #157 (permalink) | ||
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You can read about UpRev Osiris feature-list here: Osiris - Tuner - Osiris - Default Store View Edit: Link to Osiris User Manual: http://uprev.com/documentation/Osiri...Guide%20V2.pdf Edit again, paste from the above manual: Quote:
Last edited by wstar; 05-14-2009 at 04:18 PM. |
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05-14-2009, 04:18 PM | #158 (permalink) |
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Cool! Looks like you have to buy your own license though. I'm going to be spending $800 to have my car dyno tuned with UpRev as it is. If Sharif (Forged Performance) can upload additional maps, cool. But if he can't, I don't think I'll be spending another $900 for this ability.
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05-14-2009, 04:19 PM | #159 (permalink) | |
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05-14-2009, 04:43 PM | #160 (permalink) |
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well, the point of using race gas is to just have an additional margin of safety at the track. When the car is flat out for 20 minutes in 100 degree weather reaching high temps... that's when it is most prone to knocking. Racegas on an otherwise stock tune is just an additional line of defense. If you guys track the cars, its nice to at least mix some 5 gallons or so of 108 octane gas into your 93. You will end up with about 98 octane and thats pretty good for the car...
Also about the osiris..I used to have a UTEC on my sti and you could literally just switch a little remote dial with numbers on it to switch maps. The osiris system looks pretty cool too, I am going to have that... definitely going to have a track tune, a race gas tune for the track, valet and everyday. Also...my brake light is turning on whenever I put the clutch in during hard acceleration....like when the cars weight shifts back...almost as though brake fluid is sloshing around, maybe in the reservoir? Last edited by RCZ; 05-14-2009 at 05:19 PM. |
05-14-2009, 06:01 PM | #164 (permalink) |
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Umm...how do you know this? I mean, it's not like you can see your brake lights while you're driving/accelerating, right?
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