100 octane for my tuned t2
#1
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hey guys, i recently discovered a 100 octane station by my house that sells it for a reasonable price. I currently use 91 octane but am willing to shell out the extra cash if it really makes my baby run stronger. so my question is, will it really make that much of a difference? I know it shouldnt harm my internals, but id appreciate some info from you guys, i did a search and couldnt really find a thread that gave me some concrete info.
my mods are s5 motor/turbo, downppipe(no cats) fmic, haltech e8 standalone, im running about 10-11 pounds of boost at about 255rwhp. Let me know guys im curious, thanks![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
-mitch
my mods are s5 motor/turbo, downppipe(no cats) fmic, haltech e8 standalone, im running about 10-11 pounds of boost at about 255rwhp. Let me know guys im curious, thanks
![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
-mitch
#3
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alright cool beans, yeah i was gonna try to mess with the timing, but idk... Im pretty much maxin the boost on the stock turbo, so ill just give it a try
#6
it only makes more power if you are running more advanced timing than necessary or leaner air/fuel mixtures. only cars that are not properly tuned will have a noticable increase in performance with race fuel with one exception- >18PSI of boost it is a requirement or an aux. injection system.
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#8
just running 100 octane will not magically make your car faster. the only way it will give you any extra power is if the car is tuned for 100 octane. you would just be wasting money.
that said, it will not hurt your car to run it, unless you are set up for ethanol or an alternative fuel.
if you road race your car then it can help as a safety barrier. you can mix the 100 with 93 pump and it will help agenst things like detonation, hot spots, because it burns cooler. i do this in my supra but only when at the track, i dont drive that hard on the street for that long. ( 5,000 - 8,000 rpm for an hour +)
that said, it will not hurt your car to run it, unless you are set up for ethanol or an alternative fuel.
if you road race your car then it can help as a safety barrier. you can mix the 100 with 93 pump and it will help agenst things like detonation, hot spots, because it burns cooler. i do this in my supra but only when at the track, i dont drive that hard on the street for that long. ( 5,000 - 8,000 rpm for an hour +)
#9
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Lets put it this way... the only way that 100 octane makes your car feel more peppy, more responsive, and better fuel milage, compared to 91 octane, without making any other changes, is if your timing is being retarded due to engine knock, when using 91 octane.
#11
BDC Motorsports
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hey guys, i recently discovered a 100 octane station by my house that sells it for a reasonable price. I currently use 91 octane but am willing to shell out the extra cash if it really makes my baby run stronger. so my question is, will it really make that much of a difference? I know it shouldnt harm my internals, but id appreciate some info from you guys, i did a search and couldnt really find a thread that gave me some concrete info.
my mods are s5 motor/turbo, downppipe(no cats) fmic, haltech e8 standalone, im running about 10-11 pounds of boost at about 255rwhp. Let me know guys im curious, thanks![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
-mitch
my mods are s5 motor/turbo, downppipe(no cats) fmic, haltech e8 standalone, im running about 10-11 pounds of boost at about 255rwhp. Let me know guys im curious, thanks
![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
-mitch
B
#12
BDC Motorsports
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Screwing with spark advance isn't a terribly good idea unless you've got a lot of experience already having done with (with other fuels) while keeping in mind that it'll be quite easy to chunk a motor over it.
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#13
Almost. While technically most higher octane race fuels do burn more slowly, that doesn't necessarily mean it's an excuse to crank ignition advance forward. The main reason to use a good, high-quality, high octane race fuel is for resistance to knock (your first point) with respect to using it in a hotter engine environment making double or triple the power of a stock engine setup. Think of it like the same rationale behind using a colder spark plug in a hotter engine environment. That is analogous to using a "colder fuel" in a "hotter engine" if that makes sense.
Screwing with spark advance isn't a terribly good idea unless you've got a lot of experience already having done with (with other fuels) while keeping in mind that it'll be quite easy to chunk a motor over it.
B
Screwing with spark advance isn't a terribly good idea unless you've got a lot of experience already having done with (with other fuels) while keeping in mind that it'll be quite easy to chunk a motor over it.
B