Octane Booster

[Jacostang]

Does anyone know what is the best Octane Booster that really works besides Race Fuel of course or is it a waste of money????? The last stuff I tried was by Champion and it said it was the max for street use up to 15 points, so that would put the pump gas 91 to about 92 or almost 93? Right?

[BurnTire]

Torco.
http://www.jbsblownc5.net/html/torco.html#5gal

Will raise a full tank to about 95 octane.

Mixed with 5 gallons of 91 will equal 100+.

What car do you need to increase octane in?
If the car is tuned for 91 octane this will not help it run better.

[Jacostang]

The 89 GT, if I dont put at least 91 in it it will ping a little and the last time I tried to put 87 ( In California) it really hated it!! Now I carry some around with me all the time and just add some when I put gas in. The only time I actually fill it up is when we are driving long distance.

[BurnTire]

The 89 GT, if I dont put at least 91 in it it will ping a little and the last time I tried to put 87 ( In California) it really hated it!! Now I carry some around with me all the time and just add some when I put gas in. The only time I actually fill it up is when we are driving long distance.

Torco will help.
Or bump the timing back a little.

[Jacostang]

Cool Thanks Jeff!! Still savin the Iron for ya!!

[Justin@VMP]

Most of the stuff you can buy off the shelby is junk IMO.

I've heard Torco works decently, but have not done any testing myself.

If you mix your own xylene or toulene then that can work, but you've got to watch the stoich point, if you change it you'll need to add more fuel through tuning.

[Blueovalboy]

What is the procedure to up the octane in a full tank of 91? How do you know how much to mix in? I guess my real question is how long will 5 gallons of it last you?

[BurnTire]

Below are the results of mixing 32oz with 10 gallons on 91 octane gas. If you mix a full 32oz can with a tank of 91 octane you are getting around 93-94. If you mix it with 5 gallons of 91 octane you are getting 100+ octane.

I get my torco here
http://www.jbsblownc5.net/html/torco.html#5gal

At the track I use 109 octane race gas. I use the torco on the street.

Hope this helps.

[Justin@VMP]

Also, race fuels will often have a very different stoich point compared to pump gas. For example, VP 109UL has a stoich point in the 13s, so you need quite a bit more of it to get the same a/f ratio as pump gas.

[BurnTire]

Also, race fuels will often have a very different stoich point compared to pump gas. For example, VP 109UL has a stoich point in the 13s, so you need quite a bit more of it to get the same a/f ratio as pump gas.

So in plane english you are saying you need to run a richer MAF Transfer on race gas compared to a street tune?