100 Octane Fuel - Does it hurt anything

[suprastanger507mgte]

I'm sure I'm not the only one who got the impression that you went to the strip!

When you said, "immediately after getting onto the freeway" comment, I got the impression that you were traveling to go to the track! :naughty:
Sorry. I guess I was getting into your thread a bit too much. :biglaugh:

lol ... no worries man... :biglaugh: :biglaugh:

 

[suprarich]

Yes it can hurt something, Your wallet!, All kidding aside if the fuel you are using is unleaded then your fine. If it is leaded than long term use will cover your o2 sensor with deposits and make it respond slower. Also it is hard on your catalytic converter, with long term use. Actually some race fuels do increase HP just by dumping in the fuel. Some race fuels are oxygenated, and have produced a few more hp on the dyno than std gas alone.

 

[tookwik4u89]

It can damage o2 and wideband like rich said, but not a tank full, I run 110 when I run over 20 psi, and the hurt IS in the wallet.

Best part.....for me.....I love the smell of the exhaust with race fuel. MMMMM MMMMM

 

[89Turbo]

oh looks like i learn somthing new every day..... thats weird cause my friends eclispe turbo had race gas and he was floring it at about 20 and hed burn out a bunch on dry ground and he did that when he didnt have race gas and it didnt start burning rubber at a roll of 20mph.

fuel alone will do nothing at increased boost pressures + higher octane is when you notice a difference. but Jon was running way to much boost anyways.

 

[SupraDread]

Read and heed SupraRich and TooKwik4u89 that was the accurate info u were looking for. So many gentlemen and scholars on this site.

 

[suprastanger507mgte]

Well, I knw the "hurting the wallet part" that's why I never ran it in my car and had no experinece with it and the fact that only select gas stations around where I live hae it makes it even harder to try it. I got half a tank for free so jumped on the offer....lol.

 

[suprarich]

Well, I knw the "hurting the wallet part" that's why I never ran it in my car and had no experinece with it and the fact that only select gas stations around where I live hae it makes it even harder to try it. I got half a tank for free so jumped on the offer....lol.

Leaded is not too bad, I can buy Citgo 114 for 4.20 a gallon by the 55 gallon drum delivered to my door. Unleaded however is a whole other story. Much more $$$

 

[Jetfixr757]

Is it AvGas or 100 octane auto gas?
Jet

 

[suprastanger507mgte]

Is it AvGas or 100 octane auto gas?
Jet

Whats the difference between the two , Jet?

 

[Jetfixr757]

Avgas is 100 low lead, it has lead, 100 octane auto gas is unleaded. Kinda like the 103 or 110 you can by at the race tracks.
Jet

 

[Jetfixr757]

the big deal is the flash point and the lead in the fuel, it burns differently, i have never run Avgas in the Supra YET, but do plan to mix a tank or 2 50/50 and see what happens. Avgas and 93 unleaded. I used to run it in the All-Trac and it was nice. It ran well, the tail pipe had the light brown color to it.
Jet

 

[BlackMKIII]

I'm sorry to bump an old thread, BUT, I have a question.

Would running a higher octane (unleaded) gas delay the point at which you hit that annoying wall called boost cut? I'm tempted to go buy some 93 and find out.

 

[hottscennessey]

No, fuel cut is based mainly on airflow/manifold pressure.

 

[SupraMario]

I'm sorry to bump an old thread, BUT, I have a question.

Would running a higher octane (unleaded) gas delay the point at which you hit that annoying wall called boost cut? I'm tempted to go buy some 93 and find out.

You should be running the highest grade octane in your turbo anyways. What are you putting in it right now?

 

[Dirgle]

Not really, in an ideal situation, you want to run the lowest octane you can without encountering knock or detonation, going any higher is just a wast of money. Also a lower octane as more BTU's (energy potential) for any given amount. This doesn't mean you should go run 82 octane and hope your car is faster. But running the highest octane you can get your hands on isn't really the best rule of thumb. Running 91~92 octane if fine for most situations, unless your really picky. You can check and see at what octane your ECU starts pulling timing, for a given time of year, weather, ect. and adjust your mix accordingly, but thats only if your really picky.


As was stated earlier, negative on the higher octane affecting fuel cut.

 

[Boost Lee]

I'm tempted to go buy some 93 and find out.

Yikes! :aigo: May I ask what you're currently running?

I use nothing but Sunoco 94 Octane in my Supra.

 

[super.secret.supra.club]

damn moe! give me some of that gas!

 

[BlackMKIII]

I'm running Chevron 91 currently. It's just about the best you can get around here (short of finding a specialty station that sells 93 and 100)

 

[Big Wang Bandit]

In california we have 91 as our highest octane.

 

[suprastanger507mgte]

The higher Ocatane will not cure your boost/fuel cut. I was told it will prevent the ecu from pulling timing so quickly. ??? I don't know..I just quoted it. But that is the effect i felt so it must be true.
By the way, there is a 76 in San Leandro that sells 100 Octane I think. But it will be a waste for daily driving.Just get the car tuned and put in a BCC if you don't have one yet before tuning.