What MPG are you getting after going F.I.

roplusbee · 03-27-2013, 09:33 PM

Quote:

Originally Posted by SharpByCoop

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

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

Priceless.

Coop

Hell yeah!

roplusbee · 03-27-2013, 09:32 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!

elperuano · 03-27-2013, 09:45 PM

Quote:

Originally Posted by roplusbee

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!

Thisssssss!! I can't tell u how many wannabe civics try to get alongside me with their fartcans trying to show off. Quick BOV music and that's exactly how all of them react. Hilarious

Motion Lab · 03-28-2013, 08:29 AM

Turbos absolutely increase the efficiency of the motor which will in turn increase economy when driven conservatively. Supercharger set-ups actually add parasitic drag onto the engine from spinning the blower. This is why they do not see as great of increase in economy regardless of driving style.

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

theDreamer · 03-28-2013, 09:58 AM

Quote:

Originally Posted by Motion Lab

Turbos absolutely increase the efficiency of the motor which will in turn increase economy when driven conservatively. Supercharger set-ups actually add parasitic drag onto the engine from spinning the blower. This is why they do not see as great of increase in economy regardless of driving style.

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

I just do not believe that, to the level that you are posting about.
A 34-35MPG is almost 30% increase over the factory rating which have been posted to be fairly accurate at 27MPG. I understand turbos added create certain increases in economy but you also have the tune which plays a large factor. I doubt you sent the car home with an economy tune trying to maximize MPG.

m3chhawk · 03-30-2013, 07:29 PM

Quote:

Originally Posted by theDreamer

I just do not believe that, to the level that you are posting about.
A 34-35MPG is almost 30 increase over the factory rating which have been posted to be fairly accurate at 27MPG. I understand turbos added create certain increases in economy but you also have the tune which plays a large factor. I doubt you sent the car home with an economy tune trying to maximize MPG.

Don't forget FI almost always includes free flowing exhaust, no catalytic converter, and more efficient intake designs. Couple these with a custom tune and there is much more leading to the efficiency increase than the turbo/boost.

theDreamer · 04-01-2013, 10:10 AM

Quote:

Originally Posted by m3chhawk

Don't forget FI almost always includes free flowing exhaust, no catalytic converter, and more efficient intake designs. Couple these with a custom tune and there is much more leading to the efficiency increase than the turbo/boost.

That is true, but you also have to consider that the tune is where it takes advantage of all of those changes.
And I would bet most are designed to harness that open exhaust/intake design as quickly as possible to build power quickly. In the end I really really really doubt anyone is getting 30+ MPG on any forced induction VQ37.

Motion Lab · 04-01-2013, 11:57 AM

Quote:

Originally Posted by theDreamer

That is true, but you also have to consider that the tune is where it takes advantage of all of those changes.
And I would bet most are designed to harness that open exhaust/intake design as quickly as possible to build power quickly. In the end I really really really doubt anyone is getting 30+ MPG on any forced induction VQ37.

By making the power easier you are increasing the efficiency of the motor which means less fuel will be required to make the same amount of power. This will then increase fuel economy based on how you are driving. Coupled with optimizing the fuel injection via UpRev, it can make a pretty good difference on the car. If your in it to win it at every stop light you will never have a very good MPG rating haha. Even a stock g37 we tuned who drove down from New York averaged 19mpg on the way down and 25mpg on the way back up after the tune and exhaust installation.

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

Nixlimited · 03-28-2013, 10:59 AM

I track my gas mileage on an app (Gas Cubby) so after I get my TT back, I will share actual empirical results with people. I have a year of tracked gas mileage in stock form (based on gallons in and odometer) that I can use as the baseline.

Z370Z011 · 03-28-2013, 12:19 PM

Quote:

Originally Posted by Nixlimited

I track my gas mileage on an app (Gas Cubby) so after I get my TT back, I will share actual empirical results with people. I have a year of tracked gas mileage in stock form (based on gallons in and odometer) that I can use as the baseline.

Nice!!! Looking forward to results!

Baer383 · 03-30-2013, 01:54 PM

My car is not a daily driver so even when I wasn't FI I still didn't check the mpg I just drive it and fill it up same as now.

roplusbee · 03-30-2013, 03:10 PM

Quote:

Originally Posted by Baer383

My car is not a daily driver so even when I wasn't FI I still didn't check the mpg I just drive it and fill it up same as now.

Awesome! I only check mine to look for a drastic change, which would point out if I am having issues. I mean if I get something much higher or lower than 12-13.5MPG in stop and go traffic, I am going to start looking for problems.

Baer383 · 03-30-2013, 03:37 PM

Quote:

Originally Posted by roplusbee

Awesome! I only check mine to look for a drastic change, which would point out if I am having issues. I mean if I get something much higher or lower than 12-13.5MPG in stop and go traffic, I am going to start looking for problems.

I just watch my AFR gauge and try to keep it out of the 10's.

GaleForce · 03-30-2013, 03:39 PM

Quote:

Originally Posted by Baer383

I just watch my AFR gauge and try to keep it out of the 10's.

Where's the fun in that?

tower74 · 03-31-2013, 12:38 AM

Found it....This was with FI on the car. It went down after to around 34 after it was all said and done.
Don't mind the engine light...cats were burnt up.

03-27-2013, 09:32 PM	#2 (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 05:22 PM.

03-28-2013, 10:59 AM	#9 (permalink)
Nixlimited A True Z Fanatic Join Date: Aug 2009 Location: San Diego Posts: 1,235 Drives: 15 GT-R / 11 Prius Rep Power: 26	I track my gas mileage on an app (Gas Cubby) so after I get my TT back, I will share actual empirical results with people. I have a year of tracked gas mileage in stock form (based on gallons in and odometer) that I can use as the baseline. __________________ Car Sold! Pleasure being a part of the Z community. New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

03-30-2013, 01:54 PM	#11 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 30	My car is not a daily driver so even when I wasn't FI I still didn't check the mpg I just drive it and fill it up same as now. __________________ 2013 ZL1 754 rwhp 747 rwtq

03-28-2013, 08:29 AM	#4 (permalink)
Motion Lab A True Z Fanatic Join Date: Jul 2012 Location: Charlotte, NC Posts: 2,676 Drives: Nissan 370Z Rep Power: 19	Turbos absolutely increase the efficiency of the motor which will in turn increase economy when driven conservatively. Supercharger set-ups actually add parasitic drag onto the engine from spinning the blower. This is why they do not see as great of increase in economy regardless of driving style. Thanks, Alex Goodwin AlexG@motionlabtuning.com