am starting to build a 500 to 600 hp supra but i was wondering what fuel do i use 91 octane or higher?? :1zhelp:
what gas do i use??
- Thread starter PlantSUPRA
- Start date
best you can get and have it TUNED for that...
then throw in race gas and up the boost on the dyno and see what it will really do if you're adventurous...
then throw in race gas and up the boost on the dyno and see what it will really do if you're adventurous...
^^^ Not completely accurate 
87 Octane (as measured in the US) minimum is required...91 Octane is recommended for improved performance. All octane will do for you is help prevent detonation, it will not increase HP. In fact, 91 Octane contains less energy equivalent per gallon...any additional HP you get from running higher octane is from being able to increase boost without detonation (and the knock sensors pulling timing on you).
With a good tune, you can get 400+ HP easily on 91 pump gas.
Here's the gas I would use:
http://www.toptiergas.com/retailers.html
87 Octane (as measured in the US) minimum is required...91 Octane is recommended for improved performance. All octane will do for you is help prevent detonation, it will not increase HP. In fact, 91 Octane contains less energy equivalent per gallon...any additional HP you get from running higher octane is from being able to increase boost without detonation (and the knock sensors pulling timing on you).
With a good tune, you can get 400+ HP easily on 91 pump gas.
Here's the gas I would use:
http://www.toptiergas.com/retailers.html
jdub said:
100%
if you run more octane than required, you LOSE hp.
you only want to run as much octane as the motor needs. sure, for a safety margin you can go over that, but at the expense of power.
people that feel a difference using higher octane gas have a good imagination or the car wasnt tuned properly.
by no means am i saying go run 30psi on 87 octane. you have to be smart about it, and know what the car likes.
I'vve always run 91 in the Supra. Of course, I've advance the timing
jdub is right, as usual. Increasing octane only prevents knocking. Lower octane fuel burns faster, higher octane slower. Slower burning fuel decreases possibility of knocking (detonation, pinging, etc.)
jdub is right, as usual. Increasing octane only prevents knocking. Lower octane fuel burns faster, higher octane slower. Slower burning fuel decreases possibility of knocking (detonation, pinging, etc.)
Theres a vp racing gas station by my g/f house. i purchased 100 and i spilled some on my bumber and eat my paint :-cry:
cry:
we have 93 around here...
That's all the supra gets as well, in the summer the car is DEFINATELY down on power on those 100+ days...
it's a small price to pay for making sure the motor doesn't kill itself IMHO...
That's all the supra gets as well, in the summer the car is DEFINATELY down on power on those 100+ days...
it's a small price to pay for making sure the motor doesn't kill itself IMHO...
jdub said:^^^ Not completely accurate
Thanks.. thats what i should of said :naughty:
Just wondering how much hp you could get in relation to detonation with 91. I know it makes no more power and can burn slower thus typically reducing HP.
Edit: "thats" lol
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