View Poll Results: Octane rating higher than the manual recommends
18 and younger
3
0.81%
19 - 21
6
1.62%
22 - 23
8
2.16%
24 - 27
18
4.85%
28 - 31
4
1.08%
32 - 35
6
1.62%
36 - 40
1
0.27%
41 - 46
6
1.62%
47 - 50
3
0.81%
51 - 55
2
0.54%
56 - immortal =)
2
0.54%
July 17 & 18
11
2.96%
July 24 & 25
1
0.27%
July 31 & Aug 1
4
1.08%
Aug 8 & 9
3
0.81%
Aug 15 & 16
0
0%
Aug 22 & 23
3
0.81%
Yes, Definetly
22
5.93%
Have to see it first
57
15.36%
Maybe
7
1.89%
Yes, Definetly
16
4.31%
Have to see it first
34
9.16%
Maybe
5
1.35%
Cancel your order with Intense and order from someone else.
1
0.27%
That's just the nature of ordering from Japan.
3
0.81%
Relax, it's only a chin spoiler. It'll arrive.
0
0%
Quit whining I had to wait 4 months for my G to get here.
0
0%
In the front
1
0.27%
In the rear
9
2.43%
I like 2005 G35 HVAC Controls
23
6.20%
I like 2005 Altima
15
4.04%
July 24th
4
1.08%
July 31st
15
4.04%
As many choices as you would like
4
1.08%
Overnight Is koo
3
0.81%
One Day is enough
7
1.89%
don't care, can do either
3
0.81%
Weekdays
0
0%
Saturdays
11
2.96%
Anyday
1
0.27%
I don't use it because I think it's a waste of money
8
2.16%
I don't use it because of some other reason
4
1.08%
I use it
37
9.97%
Voters: 371. You may not vote on this poll
Octane rating higher than the manual recommends
#3
06-29-2004, 07:14 PM
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#4
06-29-2004, 07:50 PM
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Re: Octane rating higher than the manual recommends
I use Octane 94 everytime at Sunoco. It does makes the difference in performance wise. I want to keep my engine run nice, clean and smooth. Problem free. Remember, it is recommended to use higher Octane otherwise you'll screw up your ....fuel sensor.. or ..... I think ECU. i had few problems when I had 1998 Honda Prelude and I kept filling the gas using Oct. 87... and it was really bad idea! Prelude kept giving me a jerk everytime it shift to another... and it's automatic. i recommended to use Higher octane as possible and avoid the knock. so..... WORD!
Original G35 Coupe 6MT, Black on Black
Original G35 Coupe 6MT, Black on Black
#5
06-29-2004, 08:36 PM
Re: Octane rating higher than the manual recommends
Im also running 93 in Ny in my sedan because it run's a lot more peppier and better, it is noticeable!! Especially when you put more mod's in that deal with your gas and fuel mixture!
Martin
2003.5 BS G35
Nismo Aero/Sport Package
Injen CAI
B+G Springs
ADR M-Classic 19's..
Martin
2003.5 BS G35
Nismo Aero/Sport Package
Injen CAI
B+G Springs
ADR M-Classic 19's..
#6
06-29-2004, 09:19 PM
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Re: Octane rating higher than the manual recommends
Higher octane gas is not cleaner.
Higher octane gas will not give you more power if there is no knock.
Lower than recommended octane may contribute to knock which will retard timing which will reduce power.
Ask Neffster, he is right 100% of the time.
2004 G35C 6MT Black. Killer.
Higher octane gas will not give you more power if there is no knock.
Lower than recommended octane may contribute to knock which will retard timing which will reduce power.
Ask Neffster, he is right 100% of the time.
2004 G35C 6MT Black. Killer.
#7
06-29-2004, 09:45 PM
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Trending Topics
#8
06-29-2004, 11:57 PM
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Re: Octane rating higher than the manual recommends
Me too. I have run 87 in my sedan since new and have NEVER heard even a ping from this motor. Once I go FI though, colder plugs and 92 (highest I've seen in Wash. State) will be the norm. Just waiting for Gurgen to flush out all the bugs, then I just cut and paste his setup and write a big fat check.
#9
06-30-2004, 04:40 AM
Registered User
Re: Octane rating higher than the manual recommends
karl,
LOL. Cool man. You are right, now that I am on this, I might as well work out all the bugs. I am such dope, I didn't know that my new fuel system is a full return system! This is great, leaves things open for boost increases down the line! Another reason to go with PE! Enough thread hijacking.
You will see an improvement with 92 octane over 87, as the ECU does detect higher octane gas and switches maps to the one with more aggressive timing.
Gurgen
LOL. Cool man. You are right, now that I am on this, I might as well work out all the bugs. I am such dope, I didn't know that my new fuel system is a full return system! This is great, leaves things open for boost increases down the line! Another reason to go with PE! Enough thread hijacking.
You will see an improvement with 92 octane over 87, as the ECU does detect higher octane gas and switches maps to the one with more aggressive timing.
Gurgen
#10
06-30-2004, 05:59 AM
Re: Octane rating higher than the manual recommends
Oh "Exhaulted Ruler" (DED), I expect that from you because you're a douche bag, BUT GURGEN, FOR THE LOVE OF DOG'S, WHY??? [img]/w3timages/icons/smile.gif[/img]
For those who don't know, DED and I hang out every Friday night and drink beer together with several other local G35 owners, so when we rag on each other on-line it's all in good fun, but Gurgen what's with the cheap shot?
Now don't go stabbing me in the eye for that last comment Gurgen. LOL
<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>
For those who don't know, DED and I hang out every Friday night and drink beer together with several other local G35 owners, so when we rag on each other on-line it's all in good fun, but Gurgen what's with the cheap shot?
Now don't go stabbing me in the eye for that last comment Gurgen. LOL
<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>
#11
06-30-2004, 07:51 AM
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#12
06-30-2004, 12:28 PM
Registered User
Re: Octane rating higher than the manual recommends
Neff, LMAO
But wait, where is the cheap shot?!!!? Seriously? Which comment are you talking about? If it is about my response to DED's comment:
Higher octane gas is not cleaner.
Higher octane gas will not give you more power if there is no knock.
Lower than recommended octane may contribute to knock which will retard timing which will reduce power.
... I agree with those 3 statements!
Clarify please.
Gurgen
P.S. I like the "stabbed in teh eye" thing that you brought back. In fact, the first time I heard it in "that" right context (expressing of utter frustration for the sake of making a point) was in George Carlin's "complaints and Grievances" stand up act. See it, it's VERY funny.
But wait, where is the cheap shot?!!!? Seriously? Which comment are you talking about? If it is about my response to DED's comment:
Higher octane gas is not cleaner.
Higher octane gas will not give you more power if there is no knock.
Lower than recommended octane may contribute to knock which will retard timing which will reduce power.
... I agree with those 3 statements!
Clarify please.
Gurgen
P.S. I like the "stabbed in teh eye" thing that you brought back. In fact, the first time I heard it in "that" right context (expressing of utter frustration for the sake of making a point) was in George Carlin's "complaints and Grievances" stand up act. See it, it's VERY funny.
#13
06-30-2004, 03:25 PM
Re: Octane rating higher than the manual recommends
I think you missed DED's 4th point...
"Ask Neffster, he is right 100% of the time."
That was the point I thought you agreed with the most! LOL
<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>
"Ask Neffster, he is right 100% of the time."
That was the point I thought you agreed with the most! LOL
<font color=blue>The above statements are only my take on the issue. If you disagree with anything I typed then you are 100% right!</font color=blue>
#14
06-30-2004, 07:31 PM
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Re: Octane rating higher than the manual recommends
For the record.. we only drink non-alcoholic adult beverages.
Gurgen, can you clarify your second point? You were replying to a sedan owner, not a coupe, right? I thought that you would only get a benefit from higher octane if the the engine is knocking using lower octane (or for any other reason). If your are not knocking, higher octane will not help. I did not know the sedan ecu could advance timing more than 87 octane would require. I may need to read up more on what the different fuel maps can do. How do the different fuel maps increase/decrease power beside changes in timing?
I do not believe that the ecu can detect the octane of the fuel. I would like to know about the sensor that can do this in a car. From what I understand, the knock sensors can cause a reduction in timing, and only advance to a setpoint based on recommended octane.
Are Nissan engineers prevented from giving us answers? Are they sitting there laughing at us? There have to be a few who can read English and give us FACTS.
If a forum existed where I could read about the things I design, there is no way I could stop myself from replying.
Unless, of course, I had to kill you all afterward....
2004 G35C 6MT Black. Killer.
Gurgen, can you clarify your second point? You were replying to a sedan owner, not a coupe, right? I thought that you would only get a benefit from higher octane if the the engine is knocking using lower octane (or for any other reason). If your are not knocking, higher octane will not help. I did not know the sedan ecu could advance timing more than 87 octane would require. I may need to read up more on what the different fuel maps can do. How do the different fuel maps increase/decrease power beside changes in timing?
I do not believe that the ecu can detect the octane of the fuel. I would like to know about the sensor that can do this in a car. From what I understand, the knock sensors can cause a reduction in timing, and only advance to a setpoint based on recommended octane.
Are Nissan engineers prevented from giving us answers? Are they sitting there laughing at us? There have to be a few who can read English and give us FACTS.
If a forum existed where I could read about the things I design, there is no way I could stop myself from replying.
Unless, of course, I had to kill you all afterward....
2004 G35C 6MT Black. Killer.
#15
06-30-2004, 08:16 PM
Re: Octane rating higher than the manual recommends
On the other forums [FA & NICO] and probably this one, we have a number of unregistered viewers from Japan [tell from the IP address].
Generally engineers don't get involved because of liability and public relations........their words come back to haunt them.
Plus they have difficulty in simplifying for the masses.
They assume that those that want to know would join the SAE and read text books and the the multi tens of thousands of detailed papers and reports contained in their archives.
Since knock sensors have been in use for over 20 years.
In a way a knock sensor is measuring the octane of fuel or at least how the fuel reacts with the engine condition.
Octane is a promise often unfulfilled of what will happen, the the Knock Sensor is REALITY!
A well designed algorithm will catch the first hint of knock and start pulling out advance long before you can hear a knock [or preignition]. As the sensor ages the self resonant frequency may change or the actual sensitivity [it's nothing but a piezo microphone] all the frequency shaping and time gating [ only listens for about 20 degrees out of every 120 degrees of rotation in the case of G35 V6 - 3 times per rpm] is done in ecu.
Knock can only occur in a narrow time slot after the plug fires but before the normal 16 degrees ATDC of the BMEP maximum pressure peak. A knock within +- 3 degrees of top dead center will drive the piston [via rod] straight down into the bearing.
Generally engineers don't get involved because of liability and public relations........their words come back to haunt them.
Plus they have difficulty in simplifying for the masses.
They assume that those that want to know would join the SAE and read text books and the the multi tens of thousands of detailed papers and reports contained in their archives.
Since knock sensors have been in use for over 20 years.
In a way a knock sensor is measuring the octane of fuel or at least how the fuel reacts with the engine condition.
Octane is a promise often unfulfilled of what will happen, the the Knock Sensor is REALITY!
A well designed algorithm will catch the first hint of knock and start pulling out advance long before you can hear a knock [or preignition]. As the sensor ages the self resonant frequency may change or the actual sensitivity [it's nothing but a piezo microphone] all the frequency shaping and time gating [ only listens for about 20 degrees out of every 120 degrees of rotation in the case of G35 V6 - 3 times per rpm] is done in ecu.
Knock can only occur in a narrow time slot after the plug fires but before the normal 16 degrees ATDC of the BMEP maximum pressure peak. A knock within +- 3 degrees of top dead center will drive the piston [via rod] straight down into the bearing.