5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

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Old 07-02-2008, 06:58 PM
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Those with a 6-speed...

consider ourselves a little lucky with the gas prices. That is, we have the ability to pop out of gear and coast quite a ways while just idling. Granted this can be done with an automatic as well, but its easier with the manual transmission.

Since doing this, my trip computer (which is not accurate) said the MPGs went from 23.5 MPGs to 28.5 MPGs. The actual MPG reading at the pump, is around 25.5 MPGs (up from 21 MPGs).

Just curious if others are getting this much of an improvement.
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Old 07-02-2008, 07:13 PM
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ummm... i got a slight improvement when using 6th gear alot when cruising around 40mph as opposed to 4th... with taking it easy on the throttle as well, i got 30-40 miles more out of the tank.. not really worth it to me because i like to get on it.. i still use the 6th gear thing though... i don't really drive many roads where i can put in in neutral and cruise though
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Old 07-02-2008, 07:51 PM
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wow you guys get pretty low of gas mileage for 6 speed.. mine never went down below 28 ever. but i do drive worse than grandma.
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Old 07-02-2008, 09:02 PM
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Who really cares, if gas prices are that much of a pain cut back on some of the "necessities" that you really don't need such as cigarettes, beer drinking, excessive clubbing and just wasting money all together. If gas goes to $5 or $7 dollars a gallon will you stop driving, probably not? Here at Ft Leavenworth, you won't believe all the suddenly "green" people we have here who went out and bought scooters. This place is starting to look like freakin California. Lets stop bellyaching about gas and make our congressmen dig the oil we have in the U.S., screw the southwest asian's.
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Old 07-02-2008, 10:06 PM
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Originally Posted by Maxgig
Who really cares, if gas prices are that much of a pain cut back on some of the "necessities" that you really don't need such as cigarettes, beer drinking, excessive clubbing and just wasting money all together. If gas goes to $5 or $7 dollars a gallon will you stop driving, probably not? Here at Ft Leavenworth, you won't believe all the suddenly "green" people we have here who went out and bought scooters. This place is starting to look like freakin California. Lets stop bellyaching about gas and make our congressmen dig the oil we have in the U.S., screw the southwest asian's.
what's wrong with california.. and what's with the hate crimes against asians.
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Old 07-02-2008, 10:13 PM
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Originally Posted by A33 VQ30DEK
what's wrong with california.. and what's with the hate crimes against asians.
California is too open-minded for people from Kansas.

And SW Asia would be the Middle East so it's just an oil reference.
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Old 07-03-2008, 04:30 AM
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Originally Posted by Maxgig
Lets stop bellyaching about gas and make our congressmen dig the oil we have in the U.S., screw the southwest asian's.
yes......because it is just that simple, right?
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Old 07-03-2008, 05:59 AM
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^^agreed...

My as mileage has never been below 28ish. I drive in 6th all the time, and don't drive too much like a grandma..
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Old 07-03-2008, 06:25 AM
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I sometimes get 9 MPG, sometimes 19... trip says 21 - 27 depending... but I like to keep it single digit... easier to read...
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Old 07-03-2008, 06:35 AM
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I use the high gears as often as possible, coast down big hills, and try not to completely stop when approaching red lights. But, I also love on-ramps and gettin into the throttle.. so I average 21/22 mpg when doing city/highway driving and about 28 when the majority is on the highway.
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Old 07-03-2008, 06:39 AM
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You guys realize, that the best way to save gas is the following... (atleast in my experience)

- On the highway only give the car 5% throttle in 5th or 6th (When cruising)...
- Aside from Accel be in 5th below 50 and 6th above 50
- Decel in gear as much as possible, and downshift appropriately
- Keep 2 - 3 car lengths behind the person in front of you so you don't have to push the brakes all the time
- Never give the car more then 50% throttle...
- Always downshift to Accel but never go above 4,000 RPM
- Shift between 2 - 3k
- When crusing around 50 find the point in which you are not deceling but you are giving the car barely any throttle (can't hear exhaust but if you let go even a hair you will start deceling)

I drive highway 1/4 the way to work and back roads (averaging 30 - 45 MPH) with about 15 stop lights (stop for half maybe) and I can average 32 MPG on my trip meter...

I can average 36 MPG highway cruising (trip meter)

To prove to you guys about decel saving gas... find a hill on the highway... reset MPG meter and decel down hill ONLY giving the car gas when you need to... 1 mile later you will see your MPG sitting at 46 - 74 MPG...

try the same in neutral coasting and see what you get... decel will be higher, coasting will still be high, but while deceling you are burning no gas... you stop faster, but are also using no gas what so ever, at neutral you are still using gas.

Last edited by Merlyn; 07-03-2008 at 06:44 AM.
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Old 07-03-2008, 07:01 AM
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Wow...good info Merlyn
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Old 07-03-2008, 08:50 AM
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Doesn't the car shut off gas while in gear but not accelerating? I thought that the fuel injectors shut off until under ~1400 RPM

Neutral uses gas all the time to keep the engine at idle.
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Old 07-03-2008, 08:59 AM
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My trip meter tells me I'm doing 92 MPG

Never DS / coast in neutral, as you will use more fuel.
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Old 07-03-2008, 09:09 AM
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Originally Posted by NmexMAX
My trip meter tells me I'm doing 92 MPG

Never DS / coast in neutral, as you will use more fuel.
If you are talking about my example towards reseting the trip meter obviously it is not going to be 100% accurate, but what I am basically trying to get across is what you said, you use fuel while in neutral..

if everyone had widebands and were able to see their A/F I could tell them just to release gas and see what the wideband says in neutral vs in gear... but everyone is not that lucky...
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Old 07-03-2008, 09:39 AM
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WBO2 reading 21:1 aka lean limit FTMFW
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Old 07-03-2008, 11:17 AM
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Mine is 19.9:1

Last edited by NmexMAX; 07-03-2008 at 05:48 PM.
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Old 07-03-2008, 11:30 AM
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just filled up my car, 21mpg most city.
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Old 07-04-2008, 04:25 AM
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Originally Posted by NmexMAX
Mine is 19.9:1
same 19.9:1 A/F
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Old 07-04-2008, 06:52 AM
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26.5 mpg combined according to my trip computer
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Old 07-04-2008, 08:36 AM
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Originally Posted by Maxgig
Who really cares, if gas prices are that much of a pain cut back on some of the "necessities" that you really don't need such as cigarettes, beer drinking, excessive clubbing and just wasting money all together. If gas goes to $5 or $7 dollars a gallon will you stop driving, probably not? Here at Ft Leavenworth, you won't believe all the suddenly "green" people we have here who went out and bought scooters.

Absolutely.
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Old 07-04-2008, 10:29 AM
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Originally Posted by Merlyn
same 19.9:1 A/F
Actually it's 22.39
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Old 07-04-2008, 11:00 AM
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Originally Posted by pmohr
Actually it's 22.39
I tested it yesterday... 19.9:1 is what it read...
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Old 07-04-2008, 11:01 AM
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Originally Posted by Merlyn
I tested it yesterday... 19.9:1 is what it read...
Tested it how?
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Old 07-04-2008, 11:10 AM
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Originally Posted by pmohr
Tested it how?
DS in gear and look at the LM-1... thus viewing what the wideband read, which was 19.9:1 thus, my saying...it is 19.9 because the last time I saw it while DSing in gear, it read 19.9...

not saying that is its leanest reading, but saying that the WBO2 reads 19.9 while DSing in gear
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Old 07-04-2008, 11:36 AM
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Originally Posted by Merlyn
You guys realize, that the best way to save gas is the following... (atleast in my experience)

- On the highway only give the car 5% throttle in 5th or 6th (When cruising)...
- Aside from Accel be in 5th below 50 and 6th above 50
- Decel in gear as much as possible, and downshift appropriately
- Keep 2 - 3 car lengths behind the person in front of you so you don't have to push the brakes all the time
- Never give the car more then 50% throttle...
- Always downshift to Accel but never go above 4,000 RPM
- Shift between 2 - 3k
- When crusing around 50 find the point in which you are not deceling but you are giving the car barely any throttle (can't hear exhaust but if you let go even a hair you will start deceling)

I drive highway 1/4 the way to work and back roads (averaging 30 - 45 MPH) with about 15 stop lights (stop for half maybe) and I can average 32 MPG on my trip meter...

I can average 36 MPG highway cruising (trip meter)

To prove to you guys about decel saving gas... find a hill on the highway... reset MPG meter and decel down hill ONLY giving the car gas when you need to... 1 mile later you will see your MPG sitting at 46 - 74 MPG...

try the same in neutral coasting and see what you get... decel will be higher, coasting will still be high, but while deceling you are burning no gas... you stop faster, but are also using no gas what so ever, at neutral you are still using gas.
pretty much what I came in to say....during engine braking, injector pulse width goes to 0, which means you're technically getting infinite gas mileage. It's best to leave it in gear as you're decelerating for as long as possible...
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Old 07-04-2008, 11:38 AM
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Originally Posted by LA02MAX
pretty much what I came in to say....during engine braking, injector pulse width goes to 0, which means you're technically getting infinite gas mileage. It's best to leave it in gear as you're decelerating for as long as possible...
Have you seen the PW go to 0? Apparently the A32 ECUs just go to an extremely narrow PW, but not entirely cut if off. Regardless, the outcome is the same.

Originally Posted by Merlyn
DS in gear and look at the LM-1... thus viewing what the wideband read, which was 19.9:1 thus, my saying...it is 19.9 because the last time I saw it while DSing in gear, it read 19.9...

not saying that is its leanest reading, but saying that the WBO2 reads 19.9 while DSing in gear
We'll see about that

Actually now that I think about it, the absolute leanest it can show is 22.39 (at least for output), but I believe it shows 20.9 on decel in gear.

I saw that edit.
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Old 07-04-2008, 09:46 PM
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Who needs powersteering or brakes? Just shut the car off when you find a hill.
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Old 07-05-2008, 06:47 PM
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yea isnt that what tuning is for, or better yet, doesnt turbo kick in at like 3k or 3500?
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Old 07-05-2008, 06:49 PM
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Tuning at part throttle = FTL, ECU takes good care of that.
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Old 07-05-2008, 10:11 PM
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My trip computer says 27.1 with my fast highway driving. I refuse to believe anyone with an A32 is getting above 30 miles to the gallon though.
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Old 07-05-2008, 10:12 PM
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Originally Posted by Whitebread
My trip computer says 27.1 with my fast highway driving. I refuse to believe anyone with an A32 is getting above 30 miles to the gallon though.
I've gotten 33 in my POS, so
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Old 07-05-2008, 11:00 PM
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Originally Posted by Whitebread
My trip computer says 27.1 with my fast highway driving. I refuse to believe anyone with an A32 is getting above 30 miles to the gallon though.
my computer said 33.5mpg while doing 80mph on highway.
I got 21mpg driving in city.
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Old 07-06-2008, 09:42 AM
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Good list from Merlyn. The improvement reported in the OP has to be from more than just coasting in neutral.

I have a fuel economy survey on my site that's more detailed than most. But so far it only goes back to the 2002 MY, and only a few responses so far for the 2002 and 2003:

Nissan Maxima fuel economy

There are over 10,000 responses for all models. Not sure why there aren't more for the Max.
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Old 07-06-2008, 10:10 AM
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The trip computer adds about 4 mpg to reality.
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Old 07-06-2008, 06:17 PM
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Originally Posted by pmohr
I've gotten 33 in my POS, so
Is that your actual milage or what your trip computer says?
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Old 07-06-2008, 06:17 PM
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Originally Posted by jasonmax
my computer said 33.5mpg while doing 80mph on highway.
I got 21mpg driving in city.
What are you actually getting on the highway.
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Old 07-06-2008, 06:18 PM
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Originally Posted by Whitebread
Is that your actual milage or what your trip computer says?
Trip....compootar?
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Old 07-07-2008, 10:34 AM
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Originally Posted by Merlyn
Ok... so your car drops MPG because you are going turbo... that makes no sense...

you mean to tell me your car is smart enough the lower its MPG down because it knows that sometime in the future it will be turbo...

Past Event - You had 38 MPG at one point
Present Event - MPG Dropped
Future Event - You are going to turbo...

You are a retard...

+1
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Old 07-07-2008, 12:11 PM
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Originally Posted by '02 EMILBUS
+1
-1 actually, no way do neither of you realize that he meant he is going turbo and that he will no longer get good gas mileage once he is turbo. which isnt to say that turbo=worse gas mileage, but to say that enjoying your turbo=worse gas mileage. he never said it dropped, he said he will no longer get 38 MPG. this is most likely true, if he ever gets into boost his mileage will change. /confusion
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