Octane booster (which is the best additive?)
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Joined: Nov 2004
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From: East Bay Area
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Did you have the car tuned for 16.5psi? Or are you planning on turning up the boost yourself with a manual boost controller, and not adjusting anything else.
If it is the latter, then I don't think octane booster will make much difference.....
If it is the latter, then I don't think octane booster will make much difference.....
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....yeah....ditch the MBC quick if that is what ya did......and Torco is one of the better boosters available.
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torco is supposedly safe for every day use, but it does create an orange buildup in the turbine and downpipe. This is generally referred to as MMT fouling and some people claim it will shorten the life of your spark plugs. In my experience, however, there were no adverse effects to the plugs. Torco is the only octane booster I've tried that actually works.
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Could be.. i've never opened a motor that had run torco for a long time. I did pull the plugs and saw no orange residue on them, so I doubt its building up in the combustion chamber. It may very well clog cats, however. Still, the residue concerned me enough to stop using torco regularly and just reserve it for "special occasions."
Thanks
Thanks
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Joined: Sep 2003
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From: San Pedro
Car Info: 2004 STI
I have seen many tests and none raise the octane any real amount. When it says it raises the octane 9 points. It is really .9 of one octane. Of course I am talking about all of the legal crap you buy at the local parts house. Not the Torco stuff.
personally i'd stick with homemade race gas. i get the 5gal xylene container from kellymoor paint store for $6 a gallon. then make a premade mix of 2gal xylene, 1 small bottle of MMO(Marvel Mystry oil) and thow that in and fill up with gas,
never mix straight xylene
that makes the mixture of about 95-97 wiht 91 cali oct.
that's more then you'll get with any octane booster crap.
xylene is 114oct and toulene(sp) is 109. i believe
never mix straight xylene
that makes the mixture of about 95-97 wiht 91 cali oct.
that's more then you'll get with any octane booster crap.
xylene is 114oct and toulene(sp) is 109. i believe