Fuel Economy with a GTM TT kit!!!

bullitt5897 · 07-13-2011, 01:56 PM

Quote:

Originally Posted by pty370z

It's not like GTM needed more advertising to sell their S/C and TT systems.. hahahaha..

- Do you have a Z or a G?
- Are you having sucky gas mileage?
- The answer to your problem is Twin-Turbo!

IT WILL PAY FOR ITSELF WITH SAVINGS!

LMAO!!!!

RCZ: its simple... the injectors are running a lower duty cycle at the same rpm... despite the larger injector size it could easily be using less fuel than the stock units. Since the 600cc are not that much larger than the stock units. Many of us are experiencing this with TT kits because we are staying low in boost where it is actually beneficial... if I was at 4k rpm and 30% throttle I wouldnt be getting these results...

Mike

Rui Z · 07-13-2011, 02:08 PM

If the exact same driving accelerations are used pre- and post- turbos with good tune, then you will get better gas mileage out of the turbo'd engines.

Engine Technologies

The thing is most people get turbos to accelerate faster and not for gas savings.

esfourteen · 07-13-2011, 02:09 PM

Quote:

Originally Posted by Bullitt@UAMotorsports

LMAO!!!!

RCZ: its simple... the injectors are running a lower duty cycle at the same rpm... despite the larger injector size it could easily be using less fuel than the stock units. Since the 600cc are not that much larger than the stock units. Many of us are experiencing this with TT kits because we are staying low in boost where it is actually beneficial... if I was at 4k rpm and 30% throttle I wouldnt be getting these results...

Mike

You don't honestly think that your engine requires less fuel than mine to reach a certain AFR because you run larger injectors, do you?

Billy02987 · 07-13-2011, 02:16 PM

You guys must have magical turbo kits then. I drive mostly conservative and all highways and I don't get the gas mileage I use too. It surely isn't better either.

Rui Z · 07-13-2011, 02:25 PM

Quote:

Originally Posted by Billy02987

You guys must have magical turbo kits then. I drive mostly conservative and all highways and I don't get the gas mileage I use too. It surely isn't better either.

Alot of it has to do with tune also. Are you running slightly rich or slightly lean?

Billy02987 · 07-13-2011, 02:28 PM

Quote:

Originally Posted by Rui Z

Alot of it has to do with tune also. Are you running slightly rich or slightly lean?

Good point, more on the rich side. I don't think it's a big enough deal for them to be getting double what I get though.

Dembflyr · 07-13-2011, 02:43 PM

Quote:

Originally Posted by Billy02987

You guys must have magical turbo kits then. I drive mostly conservative and all highways and I don't get the gas mileage I use too. It surely isn't better either.

I average about 18mpg mixed driving now. Before TT I was around 22mpg mixed driving. I always write down the mileage in a small note book.

My trip computer is off by about 50%. My last tank it showed 27mpg but if you do the math I went 329.2 miles on 17.9 gallons. That works out to 18.39 mpg.

Still, not too bad after almost doubling the power but by no means is it better.

bullitt5897 · 07-13-2011, 03:52 PM

Again this is all dependent on your driving habits... When I am trying to save gas I drive completely different. I also like to have fun... Consider it hyper mileage if you want but it is possible. The difference between excellent gas mileage and having fun is paper thin...

christian370z · 07-13-2011, 05:21 PM

Most cars tend to read significantly higher gas mileage after installing larger injectors because the PCM gets its MPG readout through monitoring injector pulse times. Obviously, larger injectors present a change in pulse times but the PCM cannot adapt and reads high due to larger injectors flowing the same amount of fuel as stock injectors but needing fewer pulses due to the larger flow rate.

Fewer pulses = higher MPG readout.

Flyboy · 07-13-2011, 07:30 PM

600 miles per tank??!? Um, no way. Did the previous owner change out the gears? If so, your speedo and milage will read much higher.

VQStryker · 07-14-2011, 05:02 AM

driving habbits and tune will dictate your gas mileage.

Nixlimited · 07-14-2011, 12:11 PM

Quote:

Originally Posted by VQStryker

driving habbits and tune will dictate your gas mileage.

Within the efficiency performance limits inherent to the mechanical setup...

b1adesofcha0s · 07-14-2011, 12:14 PM

I put a blend of unicorn blood and horse pop in my gas tank to create an infinite supply of fuel in my gas tank.

/thread

RCZ · 07-14-2011, 12:37 PM

If you drive it off boost it will be very similar in gas mileage to stock, but don't come in here and tell us you doubled the stock MPG rating by installing a TT kit. You might be running significantly leaner at low rpm while cruising and yeah, you might even be saving gas (very unlikely since you've plugged the exhaust path with a set of turbos).

You're essentially saying "get bigger injectors and your gas mileage will be higher". Thats bs.

bullitt5897 · 07-14-2011, 01:21 PM

Quote:

Originally Posted by b1adesofcha0s

I put a blend of unicorn blood and horse pop in my gas tank to create an infinite supply of fuel in my gas tank.

/thread

Unicorn blood has always been my number one choice for fuel additive!

07-13-2011, 02:08 PM	#32 (permalink)
Rui Z Track Member Join Date: Feb 2010 Location: (.)(.) Posts: 931 Drives: 8====D Rep Power: 16	If the exact same driving accelerations are used pre- and post- turbos with good tune, then you will get better gas mileage out of the turbo'd engines. Engine Technologies The thing is most people get turbos to accelerate faster and not for gas savings. __________________ Last edited by Rui Z; 07-13-2011 at 02:10 PM.

07-13-2011, 02:16 PM	#34 (permalink)
Billy02987 Track Member Join Date: Jul 2009 Location: South FL Posts: 975 Drives: 2010 GT-R Rep Power: 18	You guys must have magical turbo kits then. I drive mostly conservative and all highways and I don't get the gas mileage I use too. It surely isn't better either. __________________ 2010 GT-R 2009 GTM TT 370Z-SOLD

07-13-2011, 03:52 PM	#38 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3682	Again this is all dependent on your driving habits... When I am trying to save gas I drive completely different. I also like to have fun... Consider it hyper mileage if you want but it is possible. The difference between excellent gas mileage and having fun is paper thin... __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

07-13-2011, 05:21 PM	#39 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 431	Most cars tend to read significantly higher gas mileage after installing larger injectors because the PCM gets its MPG readout through monitoring injector pulse times. Obviously, larger injectors present a change in pulse times but the PCM cannot adapt and reads high due to larger injectors flowing the same amount of fuel as stock injectors but needing fewer pulses due to the larger flow rate. Fewer pulses = higher MPG readout. __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

07-14-2011, 12:14 PM	#43 (permalink)
b1adesofcha0s A True Z Fanatic Join Date: Jan 2011 Location: MD Posts: 40,963 Drives: HypeTrain Choo Choo! Rep Power: 141	I put a blend of unicorn blood and horse pop in my gas tank to create an infinite supply of fuel in my gas tank. /thread __________________ Project: b1adeZmobile (2009 370Z) \| Uprev Tune by AAM Competition \| Berk Exhaust Project: b1adeZmobile 2.0 (2014 C7 Z51) \| Corsa Xtreme Exhaust

07-13-2011, 07:30 PM	#40 (permalink)
Flyboy Base Member Join Date: Jul 2010 Location: Destin, Fl Posts: 152 Drives: Nismo Rep Power: 14	600 miles per tank??!? Um, no way. Did the previous owner change out the gears? If so, your speedo and milage will read much higher.

07-14-2011, 05:02 AM	#41 (permalink)
VQStryker Track Member Join Date: Jul 2011 Location: Texas Age: 35 Posts: 659 Drives: :( Rep Power: 14	driving habbits and tune will dictate your gas mileage.

07-14-2011, 12:37 PM	#44 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1118	If you drive it off boost it will be very similar in gas mileage to stock, but don't come in here and tell us you doubled the stock MPG rating by installing a TT kit. You might be running significantly leaner at low rpm while cruising and yeah, you might even be saving gas (very unlikely since you've plugged the exhaust path with a set of turbos). You're essentially saying "get bigger injectors and your gas mileage will be higher". Thats bs.

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