use of higher octane gasoline

[Rustic]

The source may be the USA Today review, 8-2-02: "(Charles) Baker (head
of Accord development) claims that - based on what we'll call field
research by him and Honda V-6 engineer Yasuaki Asaki - the
four-cylinder Accord, rated 160 horsepower, accelerates head-to-head
with the four-cylinder Altima, rated 175 hp. And the 240-hp Accord V-6
outsprints the 240-hp Altima V-6, he says....The Accord V-6 ratings
assume regular-grade fuel, and Honda will market it as a regular-fuel
engine. But - pssst - it's good for another 10 hp and 10-plus lbs.-ft.
on premium, acknowledges V-6 engineer Asaki."
http://www.usatoday.com/money/autos/reviews/2002-08-01-accord_x.htm

Now i'm about to be dissapointed...why is this engineer comparing the
accord with the Altima, isn't the accord suposed to be compared to the
maxima? or is the maxima engine now superior to the accord's?

 

[Pahsons - Somnolent]

Falling asleep through Steve Beaman's post...

On Honda's with coil over plug ignition the computer uses a TDC sensor
and a Knock sensor to actively adjust timing for the best
performance/economy at any given time. Honda's VTEC system uses a
computer controlled third intake rocker/cam lobe to increase the fuel
flow to the cylinder.

But by that, it would have to have the correct parameters set in the ECU
for a higher octane, which it doesn't. Otherwise the car would run on 93,
with the knock sensor retarding timing for 87 octane. The VTEC system has
nothing to do with it. Adding more fuel has nothing to do with it.

--
"If you can't change a tire, you're not allowed to have a beard. It's the
most basic part of a car: If you don't know that much about a car, you
really shouldn't be driving, should you?" - Jimmy Kimmel
http://www.cafeshops.com/creexul.2534632
Owner of the following: Henry Cotter - A.G.F.F., Eric Dreher AND mark
digital© - A.A.T., wiru the tired - A.F.D., and that Gino guy who keeps
chaning his nick on A.A.Acura.
http://acfsliars.0catch.com/todd

 

[Pahsons - Somnolent]

Falling asleep through stewart's post...

But - pssst - it's good for another 10
hp and 10-plus lbs.-ft. on premium, acknowledges V-6 engineer Asaki."

So the engine was designed for 93 octane.

--
"If you can't change a tire, you're not allowed to have a beard. It's the
most basic part of a car: If you don't know that much about a car, you
really shouldn't be driving, should you?" - Jimmy Kimmel
http://www.cafeshops.com/creexul.2534632
Owner of the following: Henry Cotter - A.G.F.F., Eric Dreher AND mark
digital© - A.A.T., wiru the tired - A.F.D., and that Gino guy who keeps
chaning his nick on A.A.Acura.
http://acfsliars.0catch.com/todd

 

[Bill B. Johnson]

I have a 1999 Honda Accord LX six cylinder with about 31,000 miles on it. I
have always used unleaded gasoline 87 octane (manual says use 86 or higher)
and had no problems. However a friend of mine said I would get better
performance and mileage if I used premium grade higher octane gasoline.
Other than paying a higher price per gallon is there really any difference
in performance or mileage using higher octane fuel if the compression ratio
remains unchanged?
John

I agree with the intelligent posters that told you to make use of
"unleaded 87 octane" gasoline. It will save you lots of money during the
time you own the vehicle. Even if higher octane gas might add some extra
horsepower--you will rarely if ever need the extra horsepower unless you
plan to race your vehicle or go over 120 mph on a regular basis. Don't
waste your money on high octane gas.