anyone used this before. there is a gas station about 40 min away that sells it. i was gonna go and fill up a gas can with it and take it to the drag strip with me. the email i got from the dealer gave me a blend chart and some other information. it could also be used for auto-X correct??

 

What benefit do you expect from using it? Has your engine been knocking on the gas you've been using? Do you plan on advancing your timing or increasing the boost on your turbo?

 

What he said. Unless you've got a reprogrammed ECU or big boost, you'll see no benefit. You WILL see, however, a big hole in your wallet. The station up the street from my mom's place has it for $3.99/gallon!! Only person I've ever seen buy it was a Talon driver. And he made sure I heard his big turbo spool up as he left the station.

 

so what you guys are saying is, i wont get any performance gain what so ever from using this octane. i find that hard to believe.

 

higher octane will give U NO greater power, unless U can run higher boost or higher compretion. The only reason to run higher octane is if your haveing ping/nock on lower octane. Tust me, there has been studies on this

 

I get 100+ octane (around 102) in my place, and from what I know, doesnt higher octane give a better chance of not having detonation? My MR2 saids it needs "Hi-Oc" which is "Premium" in U.S. So thats what I use.

 

Yes, like I said the only time U need higher octane is if your having ping/knock (detonation). If this is the case higher octain may be needed.

 

If your motor's not set up with increased compression/boost etc. you will actually lose power by running too high of an octane rating. Higher octane=slower burn=not useful unless you NEED it to work with your motor set up.

 

Yep, that's what they're saying. Believe me if there would be gains to be had with simply running 100 we would run it in the racecar instead of 93.

 

I don't think he's saying to run it all the time. I only put 89 in it....It feels crappy when I run 93(during normal driving conditions, commute) IMO.....let alone 100 oct.

....and are these opinions....or actual facts?? don't just post what you think you know if you aren't going to back it up with explanations.

I was told that it would be good to run 100 oct at the dragstrip to give a lil extra power...especially with my current exhaust setup...but I was also told that it would be wise to adjust my timing to get full benefit, even if I am not running the 100.
...and that higher octane burns FASTER. Now I don't really know to much about this particular area, but my bf stepdad was a mechanic and worked on cars/engines most his life, so I believe most of the things he tells me. and I am sure he knows alot more.

...so all I am saying is don't give false info...it just confuses me

 

Exactly, with stock timing there is NO gain. The only gain to be seen is with the timing advanced. And even then, on a stock motor, you get a little top end BUT sacrifice a chunk of low and mid range.

 

It's pretty common knowledge that at least on honda cars with the stock ecu, you will not have gains by running 100. In IT even if 100 would give you an extra 1 hp, people (and us) would use 100, for at least some of the time. It is just not the case. There are a lot of experienced people who know these cars inside out, who still just run 93 on raceday. With a custom ecu, you may have it programmed to run on higher octane and take advantage of it, but for the stock from the factory ecu for hondas, it is just not made to run 100 and so you will not see any gains. Running higher octane (than 93) is not like a magic potion that just "gives" you more power regardless. All higher octane really does is that it burns slower, as someone pointed out. This is why high boost applications use higher octane in order to prevent detonation and also why a custom ecu might be running a much leaner program on higher octane race gas than it could on regular pump gas. Detonation is the fuel detonating earlier than you want it in the combustion process and therefore higher octane will work to counter that. It is true that there are cases where simply running higher octane will give you more power. As in the case of a turbo street car, running higher octane would allow you to run more boost before hitting detonation, so higher octane over 93 in a sense will essentially in this case allow for more power. Well at least that's the story I've heard. If it's any different, then someone please say something.

 

No.

Higher octane burns SLOWER.

Low octane = Faster burn = gas exploding rather than burning = pinging = bad

 

I run a Hybrid B16a with a custom programed ECU by Zydne, I have 8-10% larger injectors and ITR manifold and throttle body and CTR cams. I also have no knock sensor. I typically mix 110oct and 94 for track and autox. Am I waisting my money or is this cheap insurance.

 

Depends upon how the Zdyne is tuned. If it isnt setup to advance timing enough to take advantage of the increased octane, then NO it isnt helping. However, as stated above, if you are on the edge of knock with lower octane, then YES it would be helpful.

 

If the person(s) who programmed your ECU or built your engine can't answer this, I'd say better safe than sorry. BTW, they *should* be able to answer this question.

 

Facts. I never posted false info. I was a bit cramped for time when I posted before and as such, I did not have a chance to cite my sources. A few years ago, I read a fuel comparison dyno test in either Dirt Rider or Motocross Action magazine. I cannot remember which, since I had subscriptions to both. They tested at least 8 different octane grades of gasoline, also comparing leaded vs. unleaded, oxygenated vs. standard. All of them were tested on the same 250cc 2-stroke motocross bike. I could be "slightly' off here in remembering the specific numbers from the dyno test, but I believe their peak power rating was 48.xx whp which was reached while running 105 leaded racegas. 114 octane leaded put out 44whp. There was a fairly linear depreciation in power output as octane increased beyond the optimal rating. Yes, we are not talking about motocross bikes here, but the octane performance data is still relevant to show that indeed, dumping in octane beyond the engine's requirements can be a bad thing.

 

hey...I like these posts!

very useful information.

 

OK what i know is that until 11.5 to 12.0 compression you can run 94 octane and thats with a knock sensing P72 i know a few running 12.5 with 94
my motor wont run on 94 alone without serious detuning
on boost 10lbs on pump gas any more isnt a good idea
if your motor has sotck compression for NA use you dont need 100 octane and you will lose power...if it doesnt knock why waste the money
higher octane is needed only if it does knock or you are boosting or high compression

 

I know in my 90 'teg LS with advanced timing I got significantly worse gas mileage (consistantly) on 93 oc vs 91. A pretty sure sign my engine was running less efficiently with the higher octane despite the advanced timing.

 

Say it with me....

HIGHER OCTANE DOES NOT EQUAL BETTER PERFORMANCE

HIGHER OCTANE DOES NOT MEAN BETTER MILEAGE

HIGHER OCTANE DOES NOT BURN CLEANER

and, most importantly...

HIGHER OCTANE DOES NOT EQUAL BETTER PERFORMANCE!!!!!!!!!!!!!!

I can't stand it when people believe a fish-mouth body kit gives them 15 horsepower because it flows better just because their neigbor says so, then get all skeptical when someone says higher octane is of no belefit. Read the posts on this page until you understand, and never, ever let anyone tell you different.

 

i think the question has been answered.... thanks for playing.