Of course I already know to use high grade octane gas with my turbo-charged Z.

However, what are my options if I do not have access to a high grade/premium 93 Octane gas and I am limited to only regular 87 octane grade gas?

R.T.

 

Octane booster...lots of it...haha
They actually do that on the gumball rally when they drive through certain countries with low grade gasoline.

 

just don't do it. Octane booster doesn't add more than .1 or .2 octane points.....so you'd be at 87.2 at best. Just don't do it. If you can't fill up with higher than 87......carry around 100 octane with you to mix in.

 

Drive like grandma.

 

you could always invest in TORCO

 

well...i hvae been searching around on some Octane Boost products and found NOS Octane Booster Racing Formula (http://www.permatex.com/products/aut..._boosters.htm).

It said it could increase up to 6 full octane numbers.

Does anyone have any professional knowledge/experience, info, etc. on this?

 

bump is this true? cause i would carry some in my car just incase i go to a little town with nothing but 89 oct.

 

Octane booster marketeers use the POINT SYSTEM......The DECIMAL POINT SYSTEM..................when they say 6 points they mean 0.6 octane improvement.

The posted average octane is pretty meaningless because their are refinery tricks used to boost the average number without helping the drivability index of the fuel.

Ethanol blend is high in RON index but lower than MTBE blend in MON index............the average will be the same or higher with Ethanol but the engine's reaction [knock, ping] will be worse.

Same number on pump but a product seriously inferior to that supplied prior to May 2006.

Short of blending your own fuel with 10% Toluene/m-xylene or using already blended racing fuel not much can be done.

The Manganese additives leave red deposits on spark plugs causing problems unless you swap and clean plugs every month.

"Octane boosters can be broken into three types based on their active ingredients. Methyl cyclopentadienyl manganese tricarbonyl (MMT) and ferosene are used in limited amounts in off-the-shelf boosters. The majority of commercial boosters use MMT. Another type of booster uses alcohols or aromatics as the active ingredient. Many tuners use toluene as a home-style octane booster. Toluene, an aromatic circular hydrocarbon chain, is a regular component of pump gas and is available in various grades at chemical supply stores. Premium street gasoline carries roughly 3- to 5% toluene, which partially helps octane characteristics. Unocal's 100-octane race gas has almost 25% toluene.

The drawback to any of these additive ingredients is the diminishing effect they have on higher-octane fuels. Adding the same booster to 87-octane pump gas will yield a lot more octane gain than adding a bottle to 91-octane premium gas. Excessive concentrations of these additives also damage emissions-control hardware, such as spark plugs, injectors, oxygen sensors and catalytic converters. This is why most off-the-shelf boosters have an emissions-legal street formulation and an off-road formulation that exceeds the government-regulated concentration of MMT or ferosene. For the power-hungry, there really is no point in testing 87-octane gas and street-legal octane boosters. That's why we performed our tests with a base sample of 91-octane premium gasoline taken from a local SoCal station. By law this gasoline must have an octane rating of at least 91 octane. Octane boosters were obtained at local auto parts stores while 99%-pure gasoline-grade toluene was sourced from the laboratory of Rockett Brand Racing Fuel.



Knock intensity meter.

We chose Nitrous Oxide Systems' (NOS) Racing Formula octane booster, which uses MMT as its active ingredient, and Outlaw's Super Concentrated Octane Booster, which uses ferosene. ".....................................read the rest PLEASE STUDY THE GRAPHS AND CHARTS

http://www.europeancarweb.com/tech/0...osters_tested/

 

as I said before, in much less words, octane boosters are useless. it's 93 or nothin for me!

 

No offense but read the owner's manual.

It says you can use it temporarily, but ASAP switch back to 91/93.

Also avoid going WOT or driving hard when you put less than 91.

I would also reset your ECU after you put back the 91.

 

thanks to all who provided some info on this subject.

i just got an email from my friend who is still in korea and he sent me an email (along w/ some pics of the sign) letting me know that they DO HAVE premium gas.

in fact:
Regular is 92 octane
Mid-grade is 95 octane
& Premium is 98 octane

so my worries are over and i assume the Regular (92 octane) will be good enough, but still would be best on the engine to run with the Premium (98 octane).....correct?

 

Before i sold my evo, i use to mix 1-2 qts toulene in with a tank of this crap 91 we have in North Dakota. MANY people talk about it and have dino proven it to work out to be near 95-98 octane when done. Must have done it for about 7 or 8 months before they finaly got 94 back again? Temps stayed low, boost stayed high! Xylene also works, but should be used less as it's more powerfull. NEVER use more than 3 qts per tank. NEVER. They both can be found at any paint store for about $8-12 and unlike most octane boosters that raise your octane .2-.6, these two products will raise you up 2-6 full points depending on your mix. Again, it worked for me as well as many other evo and suby owners i hung out with. Have yet to use on my Z. Think i would prefer Meth injection these days though?

 

I doubt they have the same method of calculating octane as the US. Go with the premium...

 

(FYI)....Actually its on an American military base, but thanks for the reply.

 

Interesting. I didn't know that octane boosters were claiming the points on the decimal system. I've always thought that they were actually whole points. I'll never be using octane booster again.

 

Does not seem bad, increases octane 60 points (6 octane numbers) which is WAY more that I have seen in any octane booster.