Gas mileage improved by 5~6

zZSoCalZz · 05-25-2010, 03:46 PM

My first tank of gas from the dealer averaged 11~12 MPG. Since then I've installed a G3 CAI and used nothing but Chevron 91. Is this possible or maybe my tripOdometer is spazzing? Can someone shed some light on this?

I drive the same amount of miles everyday. Same freeways, local streets. I have about 1250 miles on it.

kenchan · 05-25-2010, 03:52 PM

your ECU is adapting (amongst other parts breaking in) to the operating conditions so first tank is usually poor mpg... then things get better from there.

not sure about CAI.... usually they help because cars are programmed to run pretty rich in factory form.

fullmonty · 05-25-2010, 03:54 PM

You get better milage the more you break in the engine

zZSoCalZz · 05-25-2010, 03:55 PM

So it's pretty normal huh? I've never paid this much attention to my other cars.

Chupacabra · 05-25-2010, 03:58 PM

11-12 mpg???? do you redline every shift or something? that is low.

shadoquad · 05-25-2010, 03:59 PM

I had the same thing. First week or so, 16mpg maybe. Reset the mileage gauge, drove some highway miles. It's been in the 20's ever since.

zZSoCalZz · 05-25-2010, 04:06 PM

Quote:

Originally Posted by Chupacabra

11-12 mpg???? do you redline every shift or something? that is low.

Never passed 5k RPM for the first tank of gas.

Chupacabra · 05-25-2010, 04:14 PM

Son of a goat son, that is low....

i do half highway half city, total of 52 miles a day... shift from 5-6k and get 19-20 mpg.

11 is low dude....low rider low.

m4a1mustang · 05-25-2010, 04:18 PM

Yeah! I average 19 mpg with bumper to bumper city driving!

zZSoCalZz · 05-25-2010, 04:19 PM

Quote:

Originally Posted by Chupacabra

Son of a goat son, that is low....

i do half highway half city, total of 52 miles a day... shift from 5-6k and get 19-20 mpg.

11 is low dude....low rider low.

Is this something I should be concerned about? All this time I was thinking wow! great improvement from 11~12.

Chupacabra · 05-25-2010, 04:32 PM

I don't think its a thing about concern as much as you are doing something wrong... you might be holding a gear at high rpms for a long period of time...

reset that part of the trip computer and start fresh... you should be able to easily hit 18mpg.

because at this rate you get what 187-200 miles to the tank?? i average about 300-320 miles to the tank...

antman22 · 05-25-2010, 04:35 PM

yeah, this is pretty bad mileage lol...are you racing to every location you go to LOL? i avg about 19-21 mixed driving, and i have a pretty decent lead foot. i think i've hit 16mpg, but that's with extremely spirited driving....at 11-12, you must be goin balls to the wall 24/7.

zZSoCalZz · 05-25-2010, 04:37 PM

Yeah I get about 210 per tank. I think you're right, I'm not use to this automanual. I should drive it in auto for a change and see how it improves.

zZSoCalZz · 05-25-2010, 04:40 PM

Quote:

Originally Posted by antman22

yeah, this is pretty bad mileage lol...are you racing to every location you go to LOL? i avg about 19-21 mixed driving, and i have a pretty decent lead foot. i think i've hit 16mpg, but that's with extremely spirited driving....at 11-12, you must be goin balls to the wall 24/7.

lol... 11~12 was my first tank. I average about 16~17 MPG now. I think Chupa hit it dead on tho... I blast the music and use the tiptronic and sometimes I forget I'm using tiptronic doh! Which means I stay at higher RPM more then I'm supposed to.

antman22 · 05-25-2010, 04:42 PM

that might be part of it, but even when i drive in manual mode with my auto, i dont think it dips that low...that is unless you're not shifting until 7500rpm, which i could see the mileage hitting what it is.

05-25-2010, 03:46 PM	#1 (permalink)
zZSoCalZz Base Member Join Date: May 2010 Location: Los Angeles Posts: 176 Drives: in traffic! Rep Power: 15	Gas mileage improved by 5~6 My first tank of gas from the dealer averaged 11~12 MPG. Since then I've installed a G3 CAI and used nothing but Chevron 91. Is this possible or maybe my tripOdometer is spazzing? Can someone shed some light on this? I drive the same amount of miles everyday. Same freeways, local streets. I have about 1250 miles on it.

05-25-2010, 03:54 PM	#3 (permalink)
fullmonty A True Z Fanatic Join Date: Nov 2009 Location: Dirty Jersey Posts: 7,762 Drives: 370 Touring/Sport Rep Power: 34	You get better milage the more you break in the engine __________________

05-25-2010, 03:58 PM	#5 (permalink)
Chupacabra Enthusiast Member Join Date: Jan 2009 Location: Weston, Florida Posts: 477 Drives: 09 Nissan 370z s M6 Rep Power: 200	11-12 mpg???? do you redline every shift or something? that is low. __________________ Where are my aluminum pedals?

05-25-2010, 04:14 PM	#8 (permalink)
Chupacabra Enthusiast Member Join Date: Jan 2009 Location: Weston, Florida Posts: 477 Drives: 09 Nissan 370z s M6 Rep Power: 200	Son of a goat son, that is low.... i do half highway half city, total of 52 miles a day... shift from 5-6k and get 19-20 mpg. 11 is low dude....low rider low. __________________ Where are my aluminum pedals?

05-25-2010, 04:18 PM	#9 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	Yeah! I average 19 mpg with bumper to bumper city driving! __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

05-25-2010, 03:52 PM	#2 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	your ECU is adapting (amongst other parts breaking in) to the operating conditions so first tank is usually poor mpg... then things get better from there. not sure about CAI.... usually they help because cars are programmed to run pretty rich in factory form.

05-25-2010, 03:55 PM	#4 (permalink)
zZSoCalZz Base Member Join Date: May 2010 Location: Los Angeles Posts: 176 Drives: in traffic! Rep Power: 15	So it's pretty normal huh? I've never paid this much attention to my other cars.

05-25-2010, 03:59 PM	#6 (permalink)
shadoquad A True Z Fanatic Join Date: Apr 2010 Location: . Posts: 42,608 Drives: . Rep Power: 3886	I had the same thing. First week or so, 16mpg maybe. Reset the mileage gauge, drove some highway miles. It's been in the 20's ever since.

05-25-2010, 04:32 PM	#11 (permalink)
Chupacabra Enthusiast Member Join Date: Jan 2009 Location: Weston, Florida Posts: 477 Drives: 09 Nissan 370z s M6 Rep Power: 200	I don't think its a thing about concern as much as you are doing something wrong... you might be holding a gear at high rpms for a long period of time... reset that part of the trip computer and start fresh... you should be able to easily hit 18mpg. because at this rate you get what 187-200 miles to the tank?? i average about 300-320 miles to the tank... __________________ Where are my aluminum pedals?

05-25-2010, 04:35 PM	#12 (permalink)
antman22 Track Member Join Date: Dec 2009 Location: Dallas TX Posts: 597 Drives: 09 PG 370z 7AT Rep Power: 16	yeah, this is pretty bad mileage lol...are you racing to every location you go to LOL? i avg about 19-21 mixed driving, and i have a pretty decent lead foot. i think i've hit 16mpg, but that's with extremely spirited driving....at 11-12, you must be goin balls to the wall 24/7.

05-25-2010, 04:37 PM	#13 (permalink)
zZSoCalZz Base Member Join Date: May 2010 Location: Los Angeles Posts: 176 Drives: in traffic! Rep Power: 15	Yeah I get about 210 per tank. I think you're right, I'm not use to this automanual. I should drive it in auto for a change and see how it improves.

05-25-2010, 04:42 PM	#15 (permalink)
antman22 Track Member Join Date: Dec 2009 Location: Dallas TX Posts: 597 Drives: 09 PG 370z 7AT Rep Power: 16	that might be part of it, but even when i drive in manual mode with my auto, i dont think it dips that low...that is unless you're not shifting until 7500rpm, which i could see the mileage hitting what it is.

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