100 octane
5th Gear Member
Joined: Jul 2006
Posts: 4,951
From: CT
RE: 100 octane
ORIGINAL: cobra232
sure you can. it's no different than any other gas except it has a higher amount of Heptane in it to increase the combustion temp.
if the car knocks at 87 octane rating then 100 would gain a couple of ponies. not likely that a stock singleport will knoch with 87 though. it would be a waste of money to put it in a stock singleport.
100 shot of nitrous or 11 psi procharger kit running the stock injectors with stock MAF and FMU then it will help
ORIGINAL: RyansQuick6
Yes it will hurt your engine. You can't run it straight
Yes it will hurt your engine. You can't run it straight
if the car knocks at 87 octane rating then 100 would gain a couple of ponies. not likely that a stock singleport will knoch with 87 though. it would be a waste of money to put it in a stock singleport.
100 shot of nitrous or 11 psi procharger kit running the stock injectors with stock MAF and FMU then it will help
1st Gear Member
Joined: Jan 2007
Posts: 113
From:
RE: 100 octane
it would be a waste only for the reason that the dollar amount does not equal anything near a reasonable power gain but it would not harm your engine. as far as i know the computer in the car auto-adjusts for the increased octane (a.k.a. leans out the mixture).
Joined: Oct 2007
Posts: 31
From: south of philly in pa
RE: 100 octane
yes i agree with the above statements. if you ran 100 octane i can almost gaurantee you your vehicle wont run as good plus it might even run worse due to the octane .
if you run boost and want chaep high octane use e-85 but youll have to switch injectors and a few other pieces.
if you run boost and want chaep high octane use e-85 but youll have to switch injectors and a few other pieces.
5th Gear Member
Joined: Jul 2006
Posts: 4,951
From: CT
RE: 100 octane
ORIGINAL: etep31
it would be a waste only for the reason that the dollar amount does not equal anything near a reasonable power gain but it would not harm your engine. as far as i know the computer in the car auto-adjusts for the increased octane (a.k.a. leans out the mixture).
it would be a waste only for the reason that the dollar amount does not equal anything near a reasonable power gain but it would not harm your engine. as far as i know the computer in the car auto-adjusts for the increased octane (a.k.a. leans out the mixture).
3rd Gear Member
Joined: Oct 2006
Posts: 611
From: Maryville,TN
RE: 100 octane
Iv run it through mine and it was only for 1 track run to see if it would make a diffrence and the only diffrence I had was "i think" .3 and Im not even sure if it was the fuel that helped. I personally wouldnt use it for the simple fact your car doesnt require the octane rating and well save the 4 extra bucks.
5th Gear Member
Joined: Mar 2004
Posts: 3,594
From:
RE: 100 octane
ORIGINAL: Xemeth
No no no... There's no reason to lean out the mixture. When a car is running lean or rich, it's talking about the air/fuel ratio. Octane doesn't have anything to do with that. Octane is a measure of the gasoline's ability to not cause spark knock. A car running a higher octane gasoline won't be running richer. You can have super 10,000 awesome cool octane gas in your car. The injectors will still shoot out the same amount of fuel to keep the a/f ratio where it needs to be no matter what the octane is.
ORIGINAL: etep31
it would be a waste only for the reason that the dollar amount does not equal anything near a reasonable power gain but it would not harm your engine. as far as i know the computer in the car auto-adjusts for the increased octane (a.k.a. leans out the mixture).
it would be a waste only for the reason that the dollar amount does not equal anything near a reasonable power gain but it would not harm your engine. as far as i know the computer in the car auto-adjusts for the increased octane (a.k.a. leans out the mixture).
terminators do have knock sensors and 100 octane does help them
1st Gear Member
Joined: Dec 2005
Posts: 110
From:
RE: 100 octane
ORIGINAL: Xemeth
How? The car won't run any richer with higher octane fuel. All octane is is a gasoline's resistence to spark knock. Fouled plugs are from running the car rich, and the a/f ratio won't chage with high octane fuel.
ORIGINAL: flash20
ummm fouled plugs any1 [&:]
ummm fouled plugs any1 [&:]
5th Gear Member
Joined: Jul 2006
Posts: 4,951
From: CT
RE: 100 octane
ORIGINAL: roughneck9725
This is a common misconception. Octane is a reading of how fast or slow the fuel will "burn" in the combustion chamber. Higher octane fuel burns slower and more controlled. Higher octane fuel in a car not tuned for it will do nothing but lose power as you will have timing not optimized for the fuel. The ignition timing needs to be timed to allow combustion chamber pressure to reach maximum pressure just as the piston is starting on the down stroke. Higher octane fuel needs more ignition timing to accomplish this. Lower octane fuel is more susceptible to burning uncontrollably or too "quick", causing maximum pressure before TDC, causing the engine to want to kick the opposite direction. This is why detonation damages parts. Short version is you are a fool to spend money on anything but 87 octane on a stock v6.
ORIGINAL: Xemeth
How? The car won't run any richer with higher octane fuel. All octane is is a gasoline's resistence to spark knock. Fouled plugs are from running the car rich, and the a/f ratio won't chage with high octane fuel.
ORIGINAL: flash20
ummm fouled plugs any1 [&:]
ummm fouled plugs any1 [&:]
What you described is true, but using 91 or 93 over 87 isn't going to cause any problems.
especially with a stock V6?
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