I can't find 92 octane no where in this damn state. Will the TGP run ok on 90 octane (best I can find)? Has anyone used a good octane boost that I can count on to achive 92 or better for every tank? They "all" sound good if you read their propagenda(Spl?) :roll: .
JDW
BTW recent Mods include Topgun 160, K&N, No cat., more coming soon :twisted: :twisted: :twisted:
I'm kind of in the same boat. Here in California, the highest I can find is 91 octane. I've never used octane boosters and never will. One thing you need to consider about octane boosters is that the boost points they claim are not really accurate. If it states it will raise your octane level by 5 points, it really means .5. That sucks. Your car should run fine on 90 octane fuel as long as you're not putting down strips of rubber all over town. If you want to do some hard driving, I would put in some race gas for those times or just buy some race fuel concentrate and mix it with the 90 when you need it.
Mike
Hah! We've got 93 octane at pretty much every station in my state(GA). Check out homebrew high-octane mixtures if you're interested in running higher octane. Do a search on Toluene..you should find all the info you need on it and how to calculate overall octane after using so much of it per tank. You'll probably be better off getting xylene(at home depot, lowes, and other hardware/paint supply stores..I believe it's rated slightly higher anyways) since toluene is being pulled/banned from stores(from what I've read, it is pretty hard to find it around here now except in a few paint stores that still have some in stock).
BTW, toluene/xylene when mixed in the tank can create very high octanes vs. the store bought "octane boosters." Toluene is ~114 octane by itself, I believe xylene is ~117 octane. Have fun!
We have 91 92 and 93 octane all over IL. If your read the TGP owners manual it says that premium gas in 1990 was considered to be 91 octane. Believe it or not thats what my TGP runs the best on. If you run 90 octane in it and don't beat on it you should be good. Don't put those octane boosters in all they do is clog up fuel injectors.
We have 91 here in AZ...but a week doesnt go by without about 12-15 gallons of 103 being run through the tank! 8)
When I was in Hungary with my wife I was surprised to see 108 Octane fuel at the pump. They normally have 90, 94, 98, and then 108 at the pumps. Totally no lead from what her brother said too! Does anyone know if they they have a different way of rating the octane levels in Europe? Sad part is that a liter of petro at 90 octane level is $1.25 USD which equates to about $5 per gallon. The 108 label'd fuel was $2.50 per liter or $$10$$ per gallon!! :roll:
Wow that is expensive...around here u can get 116 for like 7.50 a gallon, not bad! 8)
Quote from: TGPilotWhen I was in Hungary with my wife I was surprised to see 108 Octane fuel at the pump. They normally have 90, 94, 98, and then 108 at the pumps. Totally no lead from what her brother said too! Does anyone know if they they have a different way of rating the octane levels in Europe? Sad part is that a liter of petro at 90 octane level is $1.25 USD which equates to about $5 per gallon. The 108 label'd fuel was $2.50 per liter or $$10$$ per gallon!! :roll:
I've read that most of Europe uses the RON(Research Octane Number) system of rating their commercially available fuel. The US uses an average of MON(motor octane number) and RON..I believe it's just (R+M)/2 that we utilize.
More info on how each rating is achieved here if any of you are interested.
http://www.grapeaperacing.com/GrapeApeRacing/tech/fueloctane.cfm
Quote from: alaskatgpI can't find 92 octane no where in this damn state. Will the TGP run ok on 90 octane (best I can find)? Has anyone used a good octane boost that I can count on to achive 92 or better for every tank? They "all" sound good if you read their propagenda(Spl?) :roll: .
JDW
BTW recent Mods include Topgun 160, K&N, No cat., more coming soon :twisted: :twisted: :twisted:
All TGP chips have a safety feature called knock retard, and before anyone gets too excited, no it won?t guarantee invulnerability to damage, but goes along way WITH the ECM also backing down the boost if there is more than 3.5 degrees of knock retard for more than a predetermined about of time. SO, from knowing this, when you are hammering on your TGP and see the boost level slowly drop (foot still on the floor), your octane (or old fuel pump, sticky injectors) is not enough/for those having to run 90, or less. Don?t forget though that the stock TGP chip backs the boost down a ton after shift points so don?t think this as boost coming down from knock retard. Also if you are running real bad and have enough knock right off, the ECM will not allow boost to come up past 5psi, so know this too. Octane boost is pretty much a waste of money, the only good ones use metal and that leaves a buildup after repeated use, which displaces air space in the CC and raises the compression ratio necessitating the need for more octane/boost, and worse is the buildup is like a sandstone, soaks up some of the fuel mix making you run a tad lean, bad stuff, but like was said, there are some safe heavy aromatic hydrocarbons like Xylene and Toluene that can kick things up good and not leave deposits, hardware store has these in gallon containers, just watch the paint :)
So JD, run some 90 octane and do a long acceleration in like 3rd gear and watch if the boost level drops much, if not then its safe enough for just the knock retard lopping off a view degrees of timing. Last, if you have some altitude there in Anchorage, that would be the other reason for your premium being only 90, seen this in a few high altitude places where the thin air heads live :lol: .
Jeff M