View Poll Results: What grade of gas do you use?
87
124
46.10%
89
29
10.78%
91+
116
43.12%
Voters: 269. You may not vote on this poll
What grade of gas do you use???
#1
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What grade of gas do you use???
I have an 88 vert, NA and have read differing opinions of what kind of gas to use from 87 to 93
Can someone clear this up??
Can someone clear this up??
#6
What octane do owners of 89-91 NA use? This engine comes stock with a 9.7:1 CR. IS this later engine equipped with a knock sensor? Does the computer alter the ignition timing based on a lower or higher octane?
TODD
TODD
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#8
I'll have a Coke!
Originally posted by wherearemypistons?
What octane do owners of 89-91 NA use? This engine comes stock with a 9.7:1 CR. IS this later engine equipped with a knock sensor? Does the computer alter the ignition timing based on a lower or higher octane?
TODD
What octane do owners of 89-91 NA use? This engine comes stock with a 9.7:1 CR. IS this later engine equipped with a knock sensor? Does the computer alter the ignition timing based on a lower or higher octane?
TODD
#9
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Some of you scare me by running your TII with 87 or 91 octane. Not saying that I know everything about owning a turbo, but when I do own one, I know I sure as hell will only use 93 or higher. I dont see the point of risking detenation.
#12
Eat Rice Don't Drive it.
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SImple as this, and THIS HAS BEEN ASKED BEFORE!!!!!!!!!!!!
N/a the LOWEST YOU CAN FIND
TII's are meant to run at 87 octane but if your pumping up the boost and modding get the highest you can find.
An N/a should never need high octane unless you did some timming changes which are too much for 87 oct.
N/a the LOWEST YOU CAN FIND
TII's are meant to run at 87 octane but if your pumping up the boost and modding get the highest you can find.
An N/a should never need high octane unless you did some timming changes which are too much for 87 oct.
#14
Haven't we ALL heard this
Originally posted by 1987RX7guy
SImple as this, and THIS HAS BEEN ASKED BEFORE!!!!!!!!!!!!
N/a the LOWEST YOU CAN FIND
TII's are meant to run at 87 octane but if your pumping up the boost and modding get the highest you can find.
An N/a should never need high octane unless you did some timming changes which are too much for 87 oct.
SImple as this, and THIS HAS BEEN ASKED BEFORE!!!!!!!!!!!!
N/a the LOWEST YOU CAN FIND
TII's are meant to run at 87 octane but if your pumping up the boost and modding get the highest you can find.
An N/a should never need high octane unless you did some timming changes which are too much for 87 oct.
JAmes
#15
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the mazda bible says 87 for n/a and 93 or higher for turbo.
i'm assuming that when i supercharge my n/a i'll need to go for the higher octane as well. which is too bad - like gas prices aren't high enough for 87 octane!
i'm assuming that when i supercharge my n/a i'll need to go for the higher octane as well. which is too bad - like gas prices aren't high enough for 87 octane!
#20
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Originally posted by c-squared
An N/A will make just as much power, leave less deposits, and run more smoothly on higher grade fuels.
An N/A will make just as much power, leave less deposits, and run more smoothly on higher grade fuels.
http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm
Originally posted by BigTone
Some of you scare me by running your TII with 87 or 91 octane. Not saying that I know everything about owning a turbo, but when I do own one, I know I sure as hell will only use 93 or higher. I dont see the point of risking detenation.
Some of you scare me by running your TII with 87 or 91 octane. Not saying that I know everything about owning a turbo, but when I do own one, I know I sure as hell will only use 93 or higher. I dont see the point of risking detenation.
Originally posted by alanna
the mazda bible says 87 for n/a and 93 or higher for turbo.
the mazda bible says 87 for n/a and 93 or higher for turbo.
Originally posted by Wankel7
I run Jet-A
I run Jet-A
#22
wish my car was faster...
Join Date: May 2003
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first, how many times has this type of thread been brought up, not to get on ur *** JPA but this has been brought up numerous times. second, Impreza2RX7, i dont know know what u mean with ur post, but changes in elevation wouldnt mean its different octane. if anything it might feel like it. but even then i wouldnt know. the higher alt would just mean that the air is a lot less dense then it is at sea level, which u would feel a decrease in performance, but that different info from what is being discussed. so sorry but please explain to me why 93 octane at 6k ft = 95 octane at sealevel.
and from personal experience the NA loves lower octane atleast on mine. when i first got my car i thought id throw in a full tank of premium, just to clean out any deposits or what not. and it ran fine. but this was my first time owning a 7 so i didnt know how it was supposed to run. then after that tank was done i put 87 in and damn it made a huge difference. my butt dyno says i must have got some good usable HP back.
and from personal experience the NA loves lower octane atleast on mine. when i first got my car i thought id throw in a full tank of premium, just to clean out any deposits or what not. and it ran fine. but this was my first time owning a 7 so i didnt know how it was supposed to run. then after that tank was done i put 87 in and damn it made a huge difference. my butt dyno says i must have got some good usable HP back.
#24
Eat Rice Don't Drive it.
iTrader: (3)
Originally posted by 5 point whoa
I run 93 in my n/a?? it works way better than 87, and i get better gas mileage with it too. and my car pulls harder too. why arent you supposed to use it?
I run 93 in my n/a?? it works way better than 87, and i get better gas mileage with it too. and my car pulls harder too. why arent you supposed to use it?
Try a lot of high rpm driving with the highest octane SHELL gas you can find and then gradually go down to mid grade and then lowest grade available. If the problem persists I dunno try the water trick.
Santiago
#25
Brother of the Rotary
iTrader: (2)
Originally posted by Evil Aviator
Which "mazda bible"? The owner's manual states 87 octane (US).
Which "mazda bible"? The owner's manual states 87 octane (US).
87 Octane
91 Octane
I have never seen that 13BT's where designed to run on 87, like a previous poster said...