View Full Version : octane booster

09-25-2002, 07:35 PM
is octane booster safe for everyday use? i was gonna get some by NOS, it can raise the octane rating by 7 points. it said for race use only. do u think its safe to use? also does anyone use fuel additives, what do you think is best, and gives good results. thanks for your input.

09-26-2002, 12:47 AM
Why would you want to. Numerous magazines have tested octane booster. It does nothing for HP unless the car needs it, our cars need at least 92 according to ford. Higher octane just helps to keep the car from detonating under high boost and compression. Save yourself the money and dissapointment and just always fill up with 93 or 94 octane. Everyone complains about the price of the high octane but if you think about it there is only 10 cents difference between 93 and 94, so bug deal it will cost you 2 dollars more per tank full. and that is better than 6 or seven dollars for some crappy octane booster.

09-26-2002, 02:33 AM
Originally posted by Platinum90SC
it can raise the octane rating by 7 points.

The optimal word is points. In other words, it will raise the octane POINT 7! 93 octane, will become 93.7 octane, for $6-$7.

That $2 more for 94 octane sounds like a better choice to me.


09-26-2002, 09:36 AM
you guys can buy 94 octane the best i can get is 91 you have to ship me some haha

09-26-2002, 10:39 AM
Yah, unless your already filling up with 94 octane and you want almost 95, spend that extra money on licorice or something

09-26-2002, 11:12 AM
Just another note.

I have tried all octane boosters, NONE HAVE WORKED.
I have never noticed a bit of difference. Occasionally, i can get a chirp into third, but i don't think that has n e thing to do with the booster.

Twice, I have filled up with about 5 gallons of race fuel, 100, and 103. Still, have never noticed n e more performance. My car just seemed to idle real smooth for about a week.

If n e thing, use those booters as injector cleaners.

09-26-2002, 12:24 PM
I fill mine everytime with 98octane gas and sometimes when I have filled her up with 95octane she's much lazier than normal!!
So I'd say that octane does matter...

09-27-2002, 02:12 AM
I put my car up on the rollers at the MN-12 nationals. I had a tank full of 93 octane. On all 3 pulls, I was hitting the knock sensor from 3K on up. You can see everytime the knock sensor tells the computer to pull timing out of the spark. My A/F ratio was a straight line 12:1, so the engine wasn't leaning out.

I think that a double IC might help. Cooler Air is less likely to detonate.

My engine mods are: Coy Miller Stage 1 cam, 10% pulley (early blower), SCCoA headers, Big Dawg Exhaust, 36 lb injectors, 70mm MAF w/36 lb tube, Underdrives, K&N panel, new O2's, removed air silencer.

So as you can see, some of that race gas might help me stay off of the knock sensor, which would mean more hp/TQ = better times/mph at the track.

You should also know that the race gas has less BTU's in it, than regular gas. It burns slower & cooler, which produces less hp. Everything is a trade off!


09-27-2002, 03:04 AM
I have a Marathon in my area which sells 110 octane racing gas at a pump. Something like 4 dollars a gallon, but anyone I know that has tried it always had excellent results. Perhaps other Marathons offer similar options.

09-28-2002, 03:18 AM
Be careful that any race fuel you buy is unleaded. You can't assume it is unleaded.

09-28-2002, 11:03 AM
Originally posted by Mike8675309
Be careful that any race fuel you buy is unleaded.

Everybody knows that lead will kill your cats, but does it hurt your O2 sensors?

I thought leaded gas was only a concern for people who still have cats on their cars.


09-28-2002, 11:18 AM
Just thought I'd add to the topic. I used the NOS octane booster and I didn't feel any difference.

09-28-2002, 11:26 AM
Originally posted by tbirdsc357
I used the NOS octane booster and I didn't feel any difference.

You probably wouldn't feel any difference. Were you hitting the knock sensor? The main purpose of octane booster, is to keep your engine from detonating. I didn't know that I was hitting the knock sensor until I saw my dyno results. It shows up Clearly on the print outs.