> from 92 to 91 octane causes a slight decrease in power that becomes
noticeable
> under extreme acceleration.
i will plan to drop the right foot a little sooner then this sunday. =)
-james c
OSP #74
----- Original Message -----
From: Michael R. Clements <mrclem@telocity.com>
To: Michael R. Clements <mrclem@telocity.com>; Steve Kupper
<skupper@2xtreme.net>; Autocross <ba-autox@autox.team.net>; John J.
Stimson-III <john@idsfa.net>; Jerry Mouton <jerry@moutons.org>
Sent: Friday, August 24, 2001 7:17 AM
Subject: RE: octane boost
> I filled up with 100 octane race gas at the Union 76 yesterday. The car's
11
> gallon tank took 7.5 gallons. The gas didn't seem to make any difference,
> until I opened up the throttle and let the engine rev as I entered Hwy
280. At
> wide open throttle the engine pulls a bit harder from 3k to 6k RPM. Not a
huge
> difference, but enough to feel.
>
> This 100 octane stuff is probably overkill, but it does indicate that the
drop
> from 92 to 91 octane causes a slight decrease in power that becomes
noticeable
> under extreme acceleration.
>
> Thanks for all the info,
>
> P.S. I found the following link with detailed info on RON, MON and other
> things Octane:
> http://www.seansa4page.com/resource/octane.html
>
> -----Original Message-----
> From: owner-ba-autox@autox.team.net
> [mailto:owner-ba-autox@autox.team.net]On Behalf Of Michael R. Clements
> Sent: Wednesday, August 22, 2001 15:28
> To: Steve Kupper; Autocross
> Subject: RE: octane boost
>
>
> True, but our cars are no longer getting 92 octane. So upping it back to
92
> could have some benefits. That's what I intend to find out.
>
> -----Original Message-----
> From: owner-ba-autox@autox.team.net
> [mailto:owner-ba-autox@autox.team.net]On Behalf Of Steve Kupper
> Sent: Wednesday, August 22, 2001 14:54
> To: Autocross
> Subject: RE: octane boost
>
>
> I don't know about the computer on other cars, but on BMWs OBD II does not
> recognize octane level higher then 92, thus you will see no performance
> increase unless you change the software.
>
> steve
> -----Original Message-----
> From: owner-ba-autox@autox.team.net
> [mailto:owner-ba-autox@autox.team.net]On Behalf Of Michael R. Clements
> Sent: Wednesday, August 22, 2001 2:03 PM
> To: Jerry Mouton; Autocross
> Subject: RE: octane boost
>
>
> Jerry,
>
> Thanks for the info, sounds like race fuel at the pump is the more
effective
> solution.
>
> The engine is not knocking, yet I fear that since it's designed for 92
> octane,
> the engine's OBD II system is retarding the timing to avoid knocking, so
I'm
> losing power. The engine computer is supposedly designed to constantly
> advance
> the timing just shy of knocking, so theoretically it should respond to
> higher
> octane fuel. I want to try the higher octane stuff so see if I can feel
the
> difference in the seat of my pants. I figure it's worth at least one tank
of
> the stuff, even if doesn't make any difference, just to satisfy my
> curiousity.
>
> -----Original Message-----
> From: Jerry Mouton [mailto:jerry@moutons.org]
> Sent: Wednesday, August 22, 2001 13:45
> To: mrclem@telocity.com; Autocross
> Subject: Re: octane boost
>
>
> Michael,
>
> If your engine is not knocking, getting higher octane gas won't
> help you a bit. There is no additional energy or performance in
> higher octane fuel. It just has a slower burning characteristic
> that avoids preignition -- knock. My '64 Jaguar knocks a lot
> with pump gas, so I have a neverending quest for octane.
>
> If you are getting preignition,
>
> 1. It's at Almaden and Foxworthy, near I87. The pump octane
> is 100, which means it has a research octane rating of 106,
> higher than the 100 research octane that used to be premium.
> The Jag does not knock a bit with this fuel.
>
> 2. 104+ is the most effective additive, the others don't have much
> effect. 104+ doesn't have very much effect, either. It kept
> knock down to a minimum with the old 92 pump octane fuel, I have
> not tried it yet with the 91 octane available now.
>
> Jerry
>
> Jerry Mouton mailto:jerry@moutons.org Laissez les bons temps
> rouler!
>
> ----- Original Message -----
> From: "Michael R. Clements" <mrclem@telocity.com>
> To: "Autocross" <ba-autox@autox.team.net>
> Sent: Wednesday, August 22, 2001 12:56 PM
> Subject: octane boost
>
>
> > Hi everyone,
> >
> > Based on the thread a little while back regarding 91 octane gas, I'm
> wanting to ensure that I'm getting every last erg of output from my
> not-so-large high revving V8 engine. So I'm wondering what are the options
> for getting real American true blue 92 octane or higher gasoline.
> >
> > Option 1: go to that gas station somewhere in the south bay (forgot
where
> it is) that supposedly sells 100 octane gas.
> >
> > Option 2: use a fuel additive to increase the octane of the gas in the
> tank.
> >
> > Regarding option 1, just where is that gas station and what is the
octane
> of the gas it's selling?
> >
> > Regarding option 2, are there any products out there that actually do
> raise the octane of the gas without causing side effects or damaging the
> engine?
> >
> > Are there other options?
> >
> > I tried searching the web and found a few links like this:
> http://www.goldeagle.com/cartips/octimpr1.htm but can't really tell if
these
> are "real".
> >
> > Thanks,
> >
> > Michael R. Clements
> > mrclem@telocity.com
> > Some find truth in beauty, others find beauty in truth.
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