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      01-20-2009, 08:05 PM   #1
ChitownM3
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Octane boost?

So I see that PG got over 30whp with using 100 octaine fuel, so I wonder, would using octane boost add any kind of power? I have heard for the most part that octane booster is crap.
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      01-21-2009, 10:52 AM   #2
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http://www.m3post.com/forums/showthr...ghlight=octane

http://www.m3post.com/forums/showthr...ghlight=octane
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      01-21-2009, 11:03 AM   #3
Mischievous M
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hehe... just being cheeky BUT bring your car for a fill up in Brunei.

USD0.35cents/L for Octane 98

Its not Octane 100 but this should do
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      01-21-2009, 12:00 PM   #4
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Octane Boost is only .1 octane more, but I use Liqui Moly Speed Tec just because the gas here is crap, and the Fuel Injector Cleaner every 4000km
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      01-21-2009, 12:08 PM   #5
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Do not add octane boost, the stuff is crap and will damage injectors, buy the good gas and leave it at that.
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      01-21-2009, 05:22 PM   #6
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Quote:
Originally Posted by sparkyg View Post
Do not add octane boost, the stuff is crap and will damage injectors, buy the good gas and leave it at that.
+1

we had a lot of discussions here in the press a year ago or so and the results were pretty plain:

higher octan = no benefit in mpg and slightly increase of HP (mainly 91 versus 95octan)

you wont feel it really therefor save your money and buy some toys for your car
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      01-21-2009, 06:14 PM   #7
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are all octane boosters crap? What if you are in the situation like our mate here from guatemala and can only get 87 or 89 octane gas and octane booster is the only option?

I saw torco racing fuels octane booster at the store for $25 a bottle, thats not cheap.
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      01-31-2009, 11:27 AM   #8
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NF black race is the best octane booster around and comes in easy to use and store bottles. I use it exclusively in my Subaru STI for almost 20000 miles with no issues and no detonation (which is what I was getting before due to poor fuel quality in South Africa)
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      01-31-2009, 02:14 PM   #9
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Quote:
Originally Posted by ChitownM3 View Post
So I see that PG got over 30whp with using 100 octaine fuel, so I wonder, would using octane boost add any kind of power? I have heard for the most part that octane booster is crap.
Surely there's 100 octane gasoline available in Chicago. Call the race shops to find it quickest. Union 76, Chevron and Sunoco are brands that carry no-lead 100 and 105-octane. Don't even think about the 111 and 114, since it's got a bit of lead in it.

Use it when you plan to compete. It's best to get the tank near empty, but you'll feel gains at lower lower octanes resulting from mixing. Two tanks in a row will give you the best boost. The M3's knock sensor will continue to advance the timing right up to the limit of preignition, so you'll benefit a bunch.

After I upgrade my exhaust and throttle bodies I'll do some dyno pulls to see what improvement there is over baseline. Maybe I'll do it with and without 100 octane to see how close I get to PG's excellent results.

This is a really inexpensive upgrade for anyone competing. The extra cost doesn't justify constant use unless you're big on street racing (not recommended).

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      01-31-2009, 07:20 PM   #10
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I've heard that VP is great stuff, but it's way more convenient to fill your car from a pump at a Union 76, Sunoco or Chevron station. There will be a few places around Chicago where you can find this, I'm certain. (We've got it readily available in Denver).

If you do go with VP, watch out for the metals and ethanol in the "oxiginated" formulas, you don't want much of either. Also, avoid E85 ethanol fuel that's available at 100 octane in pumps at certain locations. It'll gum up the works in your M3 that's not designed to use it.

Dave
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