Fuel Economy with a GTM TT kit!!!
 

Hey Guys,

As some of you know I bought the TT GTM G37 that I was help selling for a buddy of mine. And I know some of you remember the STI I had purchased before that. Well I sold the STI and bought the G37 mainly for a few facts...

David needed to sell his car quick
The STI had the worse Gas mileage of any car I ever owned!!!


Now when I first bought the G37 TT I figured that the car would be about the same if not a a little better than the STI well I will let you guys judge for yourself if you think TT is bad on Gas mileage:

STI City: 12-16mpg
STI HWY: 14-19mpg

Stock 370z City: 17-19mpg
Stock 370z HWY: 23-27mpg

GTM TT G37 City: 17-25mpg
GTM TT G37 HWY: 27-38mpg

I have been recording my mileage since I bought the car and I will say it is the best and most fuel efficient car I have ever owned. I can set the car to cruise control on the hwy @ 80mph and get 35-38mpg all day long. 55-65mph is even higher!!! Whoever, says going TT will ruin your MPG is full of it!!! I have pictures of my results that I can post if people want me to. I cannot speak for SC'ing your car but if you drive your car normal you can get hypermileage results! :excited: This last 19gal tank of gas should get me around 600miles with combined city and hwy!!!

That's insane! I never would have guessed that. It would be cool if you posted pics :tup:

Best I've gotten out of my Z was 30.1 mpg driving an hour from VA to MD after getting my exhaust installed.

i dont know how you guys get such good gas mileage.

everytime i look at the MPG meeter, and i see it over 20mpg...i know im not having enough fun.

i can't get my G over 15mpg lol :D

Hahaha econ!

If I wanted I could make it get 5mpg but that would mean I would be doing 140+mph everywhere! You wouldn't believe how fast a GTM TT kit really is! 70-140+ in 6th gear takes just a few secs!!! The car keeps up with 1000cc motorcycles all day long. I have stomped on corvettes, Mercedes, muscle cars, 600cc bikes and so on... I missed my opportunity the other day to play with a Lamborghini but that's another story.

so bigger injectors/pump and increased power from two turbos = higher fuel mileage, got it.

whaaa?

The only explanation is that you're typing this from the inside of an air tight location while dynoing the white dragon.

Incredible! Keep up the good work!

Are these calculations based on the on-board computer, or based on actual fuel-usage figures (e.g. fill up and record mileage and gas usage)? I can see a scenario where the on-board computer would miscalculate gas mileage on the high-end. For example, if the on-board ECU used injector pulse length to calculate fuel use, but you had larger injectors, then when cruising the injector pulse would be shorter because the injector is larger, but you are probably using the same or more gas. I just have a very hard time believing that a TT sports car is rivaling hybrid gas mileage on the freeway.

i can barely make 300 miles highway driving only on GTM S/C. about 17-20mpg. can it be our pissy 91 octane robbing us? lol

I believe it does it exactly that way. I've watched my fuel closely since adding my turbos and it definitely hasn't increased even though the on board computer says different. The larger injectors trick it. I drive mostly highways and am pretty conservative and I normally get 300 miles to the tank now. Here's an example of my gas mileage according to the car. I keep telling people I have a hybrid lol. The last picture is what I was getting before the turbos.

i really need to go forced induction asap.

someone loan me like $5k...thats all i need.

Sell a kidney!

Exactly this. The trip computer is estimating fuel economy based on "stock" injector pulse width, the trip computer numbers are meaningless.

Fill to fill measuring the number of gallon you put in the tank by the number of miles driven is the only accurate measurement.

if you're getting 38mpg highway in the Z you are either going down a steep hill or being partially towed.

:iagree: