What MPG are you getting after going F.I.

elperuano · 03-27-2013, 06:52 PM

Well said sir.

This is why I hope it doesn't go in that direction. Everything said has been said in past threads also.
Lets just stick to stating MPG... If anyone throws in a high number we can all have a nice laugh.

Chuck33079 · 03-27-2013, 06:58 PM

I see about 18-18.5 mpg in normal driving. As far as turbos increasing mpg, you may see a little increase in fuel economy driving around in vacuum if the tune is leaner than a stock Z. Once you put your foot into it, all mpg gains go right out the window.

Sh0velMan · 03-27-2013, 06:59 PM

Pumping losses.

Out of boost, the engine runs at lower efficiency. Unless the engine in question has absolutely horrible scavenging at small throttle openings/low RPM (hint: ours doesn't have poor scavenging) you will pretty much never see an uptick in fuel efficiency.

Z370Z011 · 03-27-2013, 07:19 PM

lol no fighting you guys!.. hopefully everyone can post some sincere MPG numbers

of course MPG doesnt matter much when boosting a car, but its interesting to see what MPG numbers everyone is hitting

modme · 03-27-2013, 07:29 PM

I've done 3 cross country trips with my GTM twin turbo G37. Averaging 70-75 miles per hour with very little boost, I get about 24 MPG.

modme · 03-27-2013, 07:54 PM

I hope you see a pattern of what actual turbo owners are telling you versus those that are trying to sell you a turbo.

roplusbee · 03-27-2013, 09:17 PM

In stop and go traffic, I get 12-13.5 MPG driving around Killeen/Fort Hood. It is a more or less slinky effect.

On the highway, that is a whole different situation. I have never filled more than 18.1 gallons and I have driven about 500 miles each time I take it down to 1 dot or less. If I use the fuel that you get on base, forget about it. The car might not even start, lol.

Z370Z011 · 03-27-2013, 09:22 PM

Quote:

Originally Posted by roplusbee

In stop and go traffic, I get 12-13.5 MPG

dam!!!!! lol

dP3NGU1N · 03-27-2013, 09:25 PM

I sense a regret going FI thread brewing

Z370Z011 · 03-27-2013, 09:26 PM

Quote:

Originally Posted by dP3NGU1N

I sense a regret going FI thread brewing

elperuano · 03-27-2013, 09:27 PM

Quote:

Originally Posted by dP3NGU1N

I sense a regret going FI thread brewing

Never that! Unless you've experienced the rush you wouldn't understand!

Z370Z011 · 03-27-2013, 09:28 PM

Quote:

Originally Posted by elperuano

Never that! Unless you've experienced the rush you wouldn't understand!

my friend had a 600hp evo that he let me drive once... ive been wanting to go FI ever since

lol

modme · 03-27-2013, 10:00 PM

Absolutely no regrets. The OP asked for MPG feedback and the fact is it will go down. If you want to know if i regret FI? nahhhhhhhhhhhhhh no way.

SharpByCoop · 03-27-2013, 10:21 PM

I don't measure my Miles Per Gallon...

That's because I'm too absorbed with my Smiles Per Gallon.

Priceless.

Coop

roplusbee · 03-27-2013, 10:32 PM

Well, the 2004 Tahoe I am driving gets the same type of fuel economy. It weighs 6200lbs makes about 300hp and has 22" Bigg wheels on it. It supposedly has a 25 gallon fuel tank as well. I have never put more than 20 gallons in it and have never gone more than 400 miles on a single tank.

Now about regret..............the only thing I regret is having to leave my car @ UPREV while waiting on my new radiator AND having to drive the dang-on Tahoe for 3 weeks. I love my Greddy TT Kit, F.I. TT-TDX, 34 Row OC, and my gauge setup.

The only thing I don't like is the idiots in Hondas sounding like bees or the random 1999-2005 Mustang Cobra that pull up beside me and try to impress me with their throttle blips. I did cave in once and downshift (SRM off) from 3rd (about 30MPH) to second and gave him a taste of open WG dump throttle blip. I saw what looked to be a gasp, surpise (wide open eyes), head snapped in my direction, and a quick jerk of the steering wheel. I laughed all the way to base!

03-27-2013, 06:58 PM	#17 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	I see about 18-18.5 mpg in normal driving. As far as turbos increasing mpg, you may see a little increase in fuel economy driving around in vacuum if the tune is leaner than a stock Z. Once you put your foot into it, all mpg gains go right out the window. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

03-27-2013, 06:59 PM	#18 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	Pumping losses. Out of boost, the engine runs at lower efficiency. Unless the engine in question has absolutely horrible scavenging at small throttle openings/low RPM (hint: ours doesn't have poor scavenging) you will pretty much never see an uptick in fuel efficiency. __________________ Buy My Car! \| Build Thread

03-27-2013, 07:29 PM	#20 (permalink)
modme Enthusiast Member Join Date: Mar 2009 Location: NY Posts: 345 Drives: G37 Rep Power: 16	I've done 3 cross country trips with my GTM twin turbo G37. Averaging 70-75 miles per hour with very little boost, I get about 24 MPG. __________________ GTM Twin Turbo Stage 2\|GTR Turbo/Engine Gauges\|KW V3 Coilovers\|HKS Exhaust\|Oil Cooler\| Vossen CV1

03-27-2013, 07:54 PM	#21 (permalink)
modme Enthusiast Member Join Date: Mar 2009 Location: NY Posts: 345 Drives: G37 Rep Power: 16	I hope you see a pattern of what actual turbo owners are telling you versus those that are trying to sell you a turbo. elperuano likes this. __________________ GTM Twin Turbo Stage 2\|GTR Turbo/Engine Gauges\|KW V3 Coilovers\|HKS Exhaust\|Oil Cooler\| Vossen CV1

03-27-2013, 09:17 PM	#22 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 23	In stop and go traffic, I get 12-13.5 MPG driving around Killeen/Fort Hood. It is a more or less slinky effect. On the highway, that is a whole different situation. I have never filled more than 18.1 gallons and I have driven about 500 miles each time I take it down to 1 dot or less. If I use the fuel that you get on base, forget about it. The car might not even start, lol. __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

03-27-2013, 06:52 PM	#16 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	Well said sir. This is why I hope it doesn't go in that direction. Everything said has been said in past threads also. Lets just stick to stating MPG... If anyone throws in a high number we can all have a nice laugh.

03-27-2013, 07:19 PM	#19 (permalink)
Z370Z011 A True Z Fanatic Join Date: Jul 2012 Location: Los Angeles CA Posts: 1,052 Drives: PearlWhite 370z 6MT Rep Power: 15	lol no fighting you guys!.. hopefully everyone can post some sincere MPG numbers of course MPG doesnt matter much when boosting a car, but its interesting to see what MPG numbers everyone is hitting

03-27-2013, 09:25 PM	#24 (permalink)
dP3NGU1N A True Z Fanatic Join Date: Feb 2011 Location: Irvine Posts: 1,682 Drives: 13 PW sport 6mt Rep Power: 18	I sense a regret going FI thread brewing

03-27-2013, 10:00 PM	#28 (permalink)
modme Enthusiast Member Join Date: Mar 2009 Location: NY Posts: 345 Drives: G37 Rep Power: 16	Absolutely no regrets. The OP asked for MPG feedback and the fact is it will go down. If you want to know if i regret FI? nahhhhhhhhhhhhhh no way. __________________ GTM Twin Turbo Stage 2\|GTR Turbo/Engine Gauges\|KW V3 Coilovers\|HKS Exhaust\|Oil Cooler\| Vossen CV1

03-27-2013, 10:21 PM	#29 (permalink)
SharpByCoop Enthusiast Member Join Date: Sep 2010 Location: Connecticut Posts: 286 Drives: '08 G37S - Graphite Rep Power: 15	I don't measure my Miles Per Gallon... That's because I'm too absorbed with my Smiles Per Gallon. Priceless. Coop elperuano and Jbwrecked like this. __________________ Jim Cooper - (Retired: '08 Infiniti G37 Sport • TheShopCT built • 11.13 @ 123 mph (click for vid) • GTM Stage II Twin Turbo • 5-speed A/T Level Ten built • 591whp @17 lbs boost)

03-27-2013, 10:32 PM	#30 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 23	Well, the 2004 Tahoe I am driving gets the same type of fuel economy. It weighs 6200lbs makes about 300hp and has 22" Bigg wheels on it. It supposedly has a 25 gallon fuel tank as well. I have never put more than 20 gallons in it and have never gone more than 400 miles on a single tank. Now about regret..............the only thing I regret is having to leave my car @ UPREV while waiting on my new radiator AND having to drive the dang-on Tahoe for 3 weeks. I love my Greddy TT Kit, F.I. TT-TDX, 34 Row OC, and my gauge setup. The only thing I don't like is the idiots in Hondas sounding like bees or the random 1999-2005 Mustang Cobra that pull up beside me and try to impress me with their throttle blips. I did cave in once and downshift (SRM off) from 3rd (about 30MPH) to second and gave him a taste of open WG dump throttle blip. I saw what looked to be a gasp, surpise (wide open eyes), head snapped in my direction, and a quick jerk of the steering wheel. I laughed all the way to base! elperuano likes this. __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL Last edited by roplusbee; 03-28-2013 at 06:22 PM.