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Old 07-31-2020, 12:24 PM   #1
raulz888
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Default Octane Booster

Hey all. Just wondering if anyone is using an octane booster like Boostane to increase from 91 to 93. No 93 gas in Utah, but would love to run my 91 tune with 93 gas. Anyone making their own 93?? Thanks!
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Old 07-31-2020, 02:08 PM   #2
numskull50
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do you have E85? you can add 1-3 gallons to fill p of the highest octane you have for a boost. and its cheaper than stuff in a can.
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Old 07-31-2020, 03:07 PM   #3
Dave D.
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I buy Lucas octane booster online for about 5.00/bottle. It will boost your octane about 2pts per tankful, one of the few octane boosters that actually works. But I'm not sure if it's really good for catalytic converters. You might want to check the Lucas website.
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Old 08-01-2020, 12:22 PM   #4
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I might if I knew what the hell was in it. The only trusted legit octane boosters on the planet contain MMT. Lucas has it. NOS Racing Formula Octane Booster has it. And Torco has been trusted for years. There may be others these days with MMT as well...been awhile since anyone has spoken on this topic.
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Old 08-02-2020, 04:43 PM   #5
F1EA
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I use Lucas and NOS regularly (ie not constantly, but often). They make a noticeable difference and no adverse effects that I've noticed. Logs are all great (including wideband AFR) and never had any misfire issues. So yes... stick to MMT of you want the real deal, as bomber said above.

STP helps a little, but it's not noticeable like those two ^. Mostly useful when in a pinch, to make up for some bad gas, a little extra safety or something along those lines.

I do avoid continuous Lucas/NOS. Usually, no more than 2 tanks in a row; then at least a tank without it and so on.

One thing to do if you use boosters often is to check your plugs like every ~30k mi or so and change if needed. Mine were fine after 50k km on my WRX. Haven't gotten to that point on the STI yet, but so far 0 issues. If you use it only once in a blue moon, don't worry about it too much.

So... in my experience octane booster works fine. Just avoid making it a full time habit. For sure ok to use on days you want to have fun or if you feel you got a sketchy fuel batch.

DO NOT go race your friend the first time you run a booster and flash a new map. Drive the car a bit and do a few logs beforehand to confirm you're all good before going full send. Once you've proven the map/fuel combination you can go with confidence, so it's not like you need to be constantly logging either...

Edit: if stock, use it when you want to have some extra fun. Then back to your normal fuel. I guess you could run it constantly, but then check your plugs as i said above.
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Old 08-02-2020, 05:03 PM   #6
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Quote:
Originally Posted by raulz888 View Post
Hey all. Just wondering if anyone is using an octane booster like Boostane to increase from 91 to 93. No 93 gas in Utah, but would love to run my 91 tune with 93 gas. Anyone making their own 93?? Thanks!
You're better off using Touline if they are still sold at Sherwin Williams. I don't remember the last time I typed 'touline'.. lol long long time ago when NOS was cool.

A little bottle of octane booster per fill will net you about zero. If you do a search online, there was a formula to calculate the amount of touline needed to raise the octane level per fill.. and it's quite a lot.
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Old 08-03-2020, 01:27 PM   #7
F1EA
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Originally Posted by oichan View Post
You're better off using Touline if they are still sold at Sherwin Williams. I don't remember the last time I typed 'touline'.. lol long long time ago when NOS was cool.

A little bottle of octane booster per fill will net you about zero. If you do a search online, there was a formula to calculate the amount of touline needed to raise the octane level per fill.. and it's quite a lot.
Toluene. It's a slower burning hydrocarbon. Sort of like ethanol. And like ethanol, you need to add a lot more than a little can to raise octane by anything significant.

Octane boosters (with MMT) is different. A different compound. You need less of it to raise octane by a given number, depending on the concentration/dose...

If you're running a 91oct tune with 91+oct fuel, the best octane booster will net just about zero. Or rather, a little safety.

If you run a 93 tune on the 91 fuel plus ~3oct raised by a booster, then it will net you whatever the difference between the 91 and 93 tune. Etc.
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Old 08-03-2020, 05:07 PM   #8
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Toluene....I ran that in Cali a few times. You get odd looks at the pump when you are filling up your car with paint thinner at the pump.
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Old 08-03-2020, 05:35 PM   #9
oichan
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Yeah, good old days. Haha.
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Old 08-03-2020, 07:22 PM   #10
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Quote:
Originally Posted by raulz888 View Post
Hey all. Just wondering if anyone is using an octane booster like Boostane to increase from 91 to 93. No 93 gas in Utah, but would love to run my 91 tune with 93 gas. Anyone making their own 93?? Thanks!
gotta be careful with them, they seem to make your o2 sensor not work for very long. At least that is what happened when i used torco for about 3 months
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Old 08-03-2020, 07:38 PM   #11
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i use 110 octane race gas and mix it with 91
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Old 08-03-2020, 10:17 PM   #12
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Quote:
Originally Posted by raulz888 View Post
Hey all. Just wondering if anyone is using an octane booster like Boostane to increase from 91 to 93. No 93 gas in Utah, but would love to run my 91 tune with 93 gas. Anyone making their own 93?? Thanks!
Maybe ask the guys at Corr Performance in Kenner, Louisiana. They keep that on hand as well as e85. They are an awd tuning shop and would probably be able to tell you if there are any gains to be had after adding a can to a tank of typical fuel. Years back, I'd go to the local airport and buy 100 octane avgas. They would let you put it in gas cans but not the vehicle. Haven't tried lately, not sure if that's still a thing.
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