Random Little Question Thread
#9077
#9078
#9079
What octane is best?
So I've been doing a lot of reading and my eyes are starting to hurt. I noticed that I am fortunate to have 94 octane available at almost every gas station here in Toronto as opposed to other members from other locations who only can get 91 octane.
Intially I thought higher octane = more power. After reading what higher octane actually is, it seems 94 might be overkill for my untuned '04 G35 Sedan and might actually be reducing power as it is harder to ignite and slower burning than the recommended 91 octane for the car.
So my question would be, is my theory correct and could I actually be losing power using the higher 94 octane??
Also if I got an Osirus tune, does that also change the compression ratio and can make better use of the 94 octane??
Thank you in advance to who ever answers this question clearly and in great detail.
Intially I thought higher octane = more power. After reading what higher octane actually is, it seems 94 might be overkill for my untuned '04 G35 Sedan and might actually be reducing power as it is harder to ignite and slower burning than the recommended 91 octane for the car.
So my question would be, is my theory correct and could I actually be losing power using the higher 94 octane??
Also if I got an Osirus tune, does that also change the compression ratio and can make better use of the 94 octane??
Thank you in advance to who ever answers this question clearly and in great detail.
![Bowdown](https://g35driver.com/forums/images/smilies/bowdown.gif)
Last edited by G_DiRTY5; 05-16-2013 at 05:12 AM.
#9080
Join Date: Apr 2009
Location: Tallahassee, FL (or thereabout)
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seymore4 (05-16-2013)
#9081
Technically you can change the compression ratio by just replacing the heads.
#9082
So I've been doing a lot of reading and my eyes are starting to hurt. I noticed that I am fortunate to have 94 octane available at almost every gas station here in Toronto as opposed to other members from other locations who only can get 91 octane.
Intially I thought higher octane = more power. After reading what higher octane actually is, it seems 94 might be overkill for my untuned '04 G35 Sedan and might actually be reducing power as it is harder to ignite and slower burning than the recommended 91 octane for the car.
So my question would be, is my theory correct and could I actually be losing power using the higher 94 octane??
Also if I got an Osirus tune, does that also change the compression ratio and can make better use of the 94 octane??
Thank you in advance to who ever answers this question clearly and in great detail.![Bowdown](https://g35driver.com/forums/images/smilies/bowdown.gif)
Intially I thought higher octane = more power. After reading what higher octane actually is, it seems 94 might be overkill for my untuned '04 G35 Sedan and might actually be reducing power as it is harder to ignite and slower burning than the recommended 91 octane for the car.
So my question would be, is my theory correct and could I actually be losing power using the higher 94 octane??
Also if I got an Osirus tune, does that also change the compression ratio and can make better use of the 94 octane??
Thank you in advance to who ever answers this question clearly and in great detail.
![Bowdown](https://g35driver.com/forums/images/smilies/bowdown.gif)
#9083
I know we all love high quality parts but is it really a bad idea to buy headlights off of ebay?
http://www.ebay.com/itm/INFINITI-G35...a7d6fb&vxp=mtr
They come with a 1 year warranty so why not try them?
http://www.ebay.com/itm/INFINITI-G35...a7d6fb&vxp=mtr
They come with a 1 year warranty so why not try them?
#9084
The other thing to consider is timing, higher octane fuels allow for more timing without detonation, again this is a computer controlled function, you have no idea when the computer pulls timing but when it does it reduces power output. A lightly modified VQ with a stock tune will detonate, when we dyno’d my car it actually went into the high detonation map the first pull we made over 5000 rpm, with 91 octane fuel.
#9085
#9086
I have a question about my alarm, and there are hundreds of alarm threads on this forum but I can't find the answer.
When I press the arm button on my fob, the horn honks once, and the alarm is set. When I press the unlock button on my fob, the driver door unlocks, and if I press again the rest of the doors unlock.
However, when I press the button under the door handle to arm the alarm, it chirps twice to arm. When I press it to disarm, it chirps once, and unlocks that door, and if I press again it chirps again, and unlocks all doors.
Why does fob = horn and buttons = chirps?!?
When I press the arm button on my fob, the horn honks once, and the alarm is set. When I press the unlock button on my fob, the driver door unlocks, and if I press again the rest of the doors unlock.
However, when I press the button under the door handle to arm the alarm, it chirps twice to arm. When I press it to disarm, it chirps once, and unlocks that door, and if I press again it chirps again, and unlocks all doors.
Why does fob = horn and buttons = chirps?!?
#9087
I have a question about my alarm, and there are hundreds of alarm threads on this forum but I can't find the answer.
When I press the arm button on my fob, the horn honks once, and the alarm is set. When I press the unlock button on my fob, the driver door unlocks, and if I press again the rest of the doors unlock.
However, when I press the button under the door handle to arm the alarm, it chirps twice to arm. When I press it to disarm, it chirps once, and unlocks that door, and if I press again it chirps again, and unlocks all doors.
Why does fob = horn and buttons = chirps?!?
When I press the arm button on my fob, the horn honks once, and the alarm is set. When I press the unlock button on my fob, the driver door unlocks, and if I press again the rest of the doors unlock.
However, when I press the button under the door handle to arm the alarm, it chirps twice to arm. When I press it to disarm, it chirps once, and unlocks that door, and if I press again it chirps again, and unlocks all doors.
Why does fob = horn and buttons = chirps?!?
#9088
Nope, they're both of equal volume to my ears. And why would there be no audible indication with the fob, but there's the beep when I press the button on the car?
#9089
#9090