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Better mileage after supercharge?

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Old 10-03-2011, 06:59 PM
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hellman_x
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Default Better mileage after supercharge?

I drive a 2006 rev-up and before the vortech install I was lucky to get 19mpg doing 70 on the highway. Now I have 380whp and I do 40mpg, is my mileage calculator screwy or is that really possible?
Old 10-03-2011, 07:12 PM
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Entaille
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your mpg calc's wrong. it was wrong before your sc install, too.

calc it on your own. : ]
Old 10-03-2011, 07:30 PM
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Rev_Night
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hahaha yeah right.

1. fill up gas tank
2. reset odometer
3. use up gas tank
4. divide new gallons
Old 10-03-2011, 07:40 PM
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Arvin89
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Technically it could be, if you drive it slower and less aggressive now than you did before the install.

But thats not likely.
Old 10-03-2011, 09:07 PM
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brocw1093
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Ever since I pit my vortech on my 03 I get around 30 more miles on a full tank. It's weird and I even get on it . Idk lol
Old 10-03-2011, 10:58 PM
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350z006
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The mileage calculator is wrong...the problem is that the calculator is based on the stock injectors, so when you put bigger injectors it does not compensate...

And unfortunately you can't re-calibrate the mileage calulator to your new injectors, at least you couldn't when I asked a long time ago...
Old 10-04-2011, 03:58 AM
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Spork
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There's some variables that make this hard to determine.
Old 10-04-2011, 04:23 AM
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kyle52
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Originally Posted by 350z006
The mileage calculator is wrong...the problem is that the calculator is based on the stock injectors, so when you put bigger injectors it does not compensate...
Just me or does this not make sense? I would think the bigger injectors it would read more fuel flowing through resulting in a lower gas milage not higher..?

Correct me if I'm wrong
Old 10-04-2011, 06:29 AM
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WSchli1672
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I have the vortech and get 418 rwhp. My mileage hasn't really changed much, I was getting 26.5 to 27.2 on the road with N/A add ons, i.e. headers, catback, and cold air intake, which was a improvement to the original stock. Now with the vortech, when I get on it then it will naturally go done (i.e. 23.5 - 24). I really don't get on it much though, only when somebody tries to cut me off instead of getting behind me, etc. I like just driving the normal and having the extra the unexpected or showoffs. I use cruise lot and I get pretty much the same, and that is a little over 25 on the road.
Old 10-04-2011, 07:54 AM
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Cux350z
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Originally Posted by kyle52
Just me or does this not make sense? I would think the bigger injectors it would read more fuel flowing through resulting in a lower gas milage not higher..?

Correct me if I'm wrong


Supercharger is parasitic which means your mileage goes down.

The stock ecu thinks you are running the stock injectors on smaller pulse widths which is not the case. You are running larger injectors which flow more at the same pulse widths.
Old 10-04-2011, 08:25 AM
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07_350z_JP
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what was nissan thinking ---- it could double gas mileage and get 60% more power by slapping a supercharger on ......... when will it ever learn
Old 10-04-2011, 05:08 PM
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Czarrr
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Originally Posted by Rev_Night
hahaha yeah right.

1. fill up gas tank
2. reset odometer
3. use up gas tank
4. divide new gallons
Finally. Someone who understands.

You don't know how many people I have spoken with talk about how crappy their MPG's are. How much it sucks to fill up 60$. Yet still, they don't know what their talking about more than half the time.
Who cares if it's 60$ a week in gas when that 60$ will get you 15 gallons to drive 500miles. Fuhhh. That's more than 30mpgs.
Old 10-04-2011, 05:16 PM
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davidv
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Increase horsepower
Maintain same vehicle weight
and MPG improves? Impossible.
Old 10-07-2011, 07:33 AM
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Cux350z
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Originally Posted by davidv
Increase horsepower
Increase vehicle weight
and MPG improves? Impossible.



FTFY. Superchargers are not weightless like turbochargers
Old 10-07-2011, 10:51 AM
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Waiz
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Did you reset your gauge and you're still getting this reading?

Something is not adding up..
Old 10-07-2011, 11:05 AM
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drivessidewayz
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Originally Posted by Czarrr
Finally. Someone who understands.

You don't know how many people I have spoken with talk about how crappy their MPG's are. How much it sucks to fill up 60$. Yet still, they don't know what their talking about more than half the time.
Who cares if it's 60$ a week in gas when that 60$ will get you 15 gallons to drive 500miles. Fuhhh. That's more than 30mpgs.
I gave up on trying to correct those people. They don't want to understand math...so they don't.
Old 10-09-2011, 08:26 AM
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Zero260
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My MPG gauge reads 30mpg all the time.

I'm twin turbo, and my highest number by doing the actual math was 18mpg

Don't trust the gauge.
Old 10-09-2011, 03:17 PM
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05Z33
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Who cares about mpg's. If you you want mileage get a prius.
Old 10-09-2011, 04:21 PM
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jusdrink
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the gauge is is wrong mine says 31mpg. i average 18mpg and its mostly highway gtm sc @ 12psi 440 whp
Old 10-09-2011, 09:24 PM
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OldManZ350
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I don't go by the gauge, i go by how much fuel i've used over a given distance.

That being said, the last time to the track I averaged 29mpg including the 3 runs at the Strip....... Mostly highway on cruise control @ 75mph.

Believe me, don't believe me.... I'm not one with bad mpg's

I feel for you guys that get crappy gas milage, you don't have to.......


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