Date: Mon, 8 Apr 2002 21:40:00 -0700
Reply-To: David Marshall <vanagon@VOLKSWAGEN.ORG>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: David Marshall <vanagon@VOLKSWAGEN.ORG>
Subject: Re: GAS FOR TIICO...
In-Reply-To: <000f01c1df48$7e63e5c0$0100a8c0@home>
Content-Type: text/plain; charset="iso-8859-1"
Gary,
Your theory is half correct here. The timing will advance to a point and
then stop at a pre programmed maximum. If the engine needs 89 octane fuel
and won't ping at all with 89 octane then burning 91, 95, 101 etc won't do
anything for you as the timing is maxed according to the computer program
already.
You will get LOWER fuel economy with higher octane fuel as the higher octane
fuel burns slower (to prevent pre-detonation or ping) and has less potential
energy than lower octane fuel. Save your money and run 87 or 89 in there
and buy some fuel injector cleaner at every oil change. Also some of the
very high octane fuel have methyl alcohol in them which slowly eats the
rubber o rings in your FI system.
If you want more power out of your engine, advance your timing to 10 to 12
BTDC (assuming stock is 6 BTDC). By doing this the total maximum advance of
the distributor will in effect by more and therefore give you the potential
of more power - instead of 40 BTDC at 3000 RPM you will now have 46 BTDC -
this is in effect what the ECU chips do (they need higher octane fuel too!).
If you experience knock, the knock sensor will retard timing and take some
power away from you. Don't go more than 6 degrees more as the total
'retarding' effect is about 10 to 12 degrees - more than that and you won't
be able to prevent knock as the system won't be able to retard the timing as
much.
David Marshall
Fast Forward Automotive Inc.
4356 Quesnel Hixon Road
Quesnel BC Canada V2J 6Z3
http://www.fastforward.ca mailto:sales@fastforward.ca
Phone: (250) 992 7775 FAX: (250) 992 1160
- Vanagon Accessories and Engine Conversions
- Vanagon, Transporter and Iltis Sales and Importation
- European Lighting for most Volkswagen models
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Gary Stearns
Sent: April 8, 2002 2:58 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: GAS FOR TIICO...
Since the TiiCo engine is equipped with a knock sensor, you can run any
grade gas that you want. Run 89 or lower and it'll sense impending knock
and retard the timing. You'll won't get knock, but your power and mileage
will suffer. Run 94 (or just for kicks try some octane booster), still no
knock, power improves, mileage improves. Don't know where the break even is
on mileage savings vs. octane cost.
Gary
----- Original Message -----
From: "Chris D'Amico" <chrisdamico@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, April 08, 2002 3:33 PM
Subject: GAS FOR TIICO...
> HEY LISTERS,
> WITH THE PRICE OF GAS RIGHT NOW, WHAT IS THE LISTS
> OPINION OF WHAT TYPE OF GAS TO PUT IN MY INLINE 4.
> I'VE PUT ALL TYPES IN AND IT RUNS PRETTY MUCH THE
> SAME. ANY HELP WOULD BE GREAT.
> CHRIS.
> 89 WOLFIE WEEKENDER TIICO ED.
>
> __________________________________________________
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