Octane booster choice/worth it?
TECH Fanatic
Joined: Jan 2007
Posts: 1,029
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From: LITH, IL.
read the can, when it says it will raise Octane 1 point, it does NOT change 93 Octane to 94, what it will do is raise it to (approx) 93.1 Octane. Unless you are knocking at 93 and not at 93.1 it is a waste of money.
California has 91 octane as the highest octane... just puttin it out there since you guys are talking about the california myth "93 octane" lol
but i tried an octane booster before, buddy bought it to see if it would work i put that **** in and i didnt feel nothing haha
but i tried an octane booster before, buddy bought it to see if it would work i put that **** in and i didnt feel nothing haha
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lmao your talkin bout that guy that put nos energy drink in his bike then it wudnt start right? lmfao omannnnn
and i said for us californians that dont have 93 since you guys are saying "why not just put 93" cause we aint gots none lol
and i said for us californians that dont have 93 since you guys are saying "why not just put 93" cause we aint gots none lol
If you really need an octane boost, head down to Home Depot and pick up a gallon of either Toluene or Xylene. They are something like 115 octane, so a gallon mixed into a full tank will net you a 1.5 increase in octane. Around here either are $10/gal.
There's something to that, especially in a N/A engine. I never had any issues using 91 in the GXP, even with more agressive timing. But I hear that the oxygenated gasoline you have in Cali is ****.
This is an old article but still has some good info.
http://volvospeed.com/Reviews/octane_boosters.html
http://volvospeed.com/Reviews/octane_boosters.html
Would this be safe for a untuned and stock internal motor?
Yes - Some people are not quite so sure about using Xylene, but toluene is already in pump gas anyway. (You might want to read the MSDS before splashing either of these around.) Neither of these have any significant effect on the stoichiometric AFR.
I don't think the LS4 actually needs anything higher than 91 octane unless boost is involved, in which case I'd probably prefer meth injection over gasoline additives anyway. You can also use meth with a n/a engine... a 50/50 mix of meth and water could still give you 2.0 increase in octane. Depending on the meth controller, you only use it under load anyway, so a gallon of methanol would last through several tanks of gas. You do need to tune for meth though.
I don't think the LS4 actually needs anything higher than 91 octane unless boost is involved, in which case I'd probably prefer meth injection over gasoline additives anyway. You can also use meth with a n/a engine... a 50/50 mix of meth and water could still give you 2.0 increase in octane. Depending on the meth controller, you only use it under load anyway, so a gallon of methanol would last through several tanks of gas. You do need to tune for meth though.
