wow...

combined local and highway I am getting ~19mpg and that is with quite a bit of getting on it..

I generally see 330 out of a tank without sucking it dry...

man! somethings not right with my car lol. it's sucking wayyyyy too much gas and i'm not even getting on it.

I am getting 24mpg pure highway 65~70 mph driving...

I get 6 mpg.

I'm getting around 15...20 if Im super careful.

After i installed my stillen kit i filled my car up, said i had 765 kms tell empty which i ussually only get like 380 to tank so i thought that was od.. i started thinking i messed up the level sensor when i installed the fuel pump. And also my tank would never read full, like ever.. i filled it up, it read full which surprised me, ive got 435 kms on this taknk with 2 dots left. im wondering if i did mess up my level sensor? Im using the trip function and not the milage left gauge. Ive been really easy on the car lately, i guess if your not pumping in boost u shouldnt be using anymore gas then before it was FI?

EVOHUNTER, read the above quote, should explain what is going on.
I get between 15-20 depending on how I am driving (mostly city with some open highway). Lately I have been getting up on the highway more, but those on ramps are just asking for it. :driving:

My car reports around 22.3 MPG average, and calculated to 21.7 MPG after yesterday's fill up. This is mostly city and some freeway driving to work and around town. So each week I accumulate under 230 mi., and it takes a little over 10 gallons to fill up. All N/A so far of course.

ok none of this makes any sense. First of all how would you actually make it to the gas station with a totally empty tank. Which would have to be the case in order for you to actually fill it with 19 gallons of gas. second, i have no idea why you would run a car with 600whp and an aftermarket turbo kit and built motor and all that stuff with almost no gas in the car, that is just asking for trouble. Third, unless you got a different transmission, your gearing would be exactly the same as ours, and therefore you wouldn't have any reason to be getting better fuel economy. All things being equal, same RPM at the same speed, but with a larger displacement motor and a ton more horsepower, it defies ALL reasoning that your car could possibly get better gas mileage than a stock 370z.

Turbochargers, and any FI system, coupled with larger injectors produces more power by allowing the car to burn MORE air and fuel in the cylinder. You stroked your motor too, allowing it to burn even MORE air and fuel at the same time, producing more power. So burning more air and fuel at the same time means better efficiency?

Your car has more power than any stock 370z because it can burn more air and fuel in a given revolution than a stock vq37. More air and fuel burnt in a given revolution=worse fuel economy.

Just because your motor doesn't have to strain to make the same horsepower as a stock motor, doesn't mean it is more efficient. If a 6ft 300lb Powerlifter can more easily deadlift 500lbs than a 5ft tall 175lb power lifter. However, when they are both walking around the 300lb guy burns more calories to do any activity just because he has a higher metabolism and more mass. Granted, engines aren't people, but its the same principle.

I also don't see the point in making a false statement about increased fuel economy on a high horsepower car. The correct answer to 'how many MPG's do you get?' in your high horsepower, modified car, is 'I don't give a shit.'

^^He's talking about his G37 car.

Plus there's so many factors that go into mpg that we really shouldn't care too much about it when it comes to TTing a car.

Oh sorry, i thought he was talking about the Z. Either way, same point.

Your confusing my cars...

This was in reference to the G37 TT I bought which by my logs on paper has been getting 27-33MPG shared mileage. And btw the car holds a 20 gal tank of gas.

ok either way. Why would you run an aftermarket turbo car down to the empty light. its asking for trouble.

are you under boost or vacuum while cruising?

the power lifter is a bad analogy...

lets look at it this way...

you have a N/A car it makes 300hp then you add ram air system... now it makes 315hp on the same tune... the car uses the same amount of fuel on both applications one just makes more power. Acceleration is now faster meaning getting up to desired speed takes less time so your burn duration is shorter. You are able to use less throttle to maintain that speed even if it is just a small amount...

I am just writing down what the car is getting for mileage... I have driven Hi HP cars for a while now and understand you dont need to flaunt it 24/7 when driving! I find that I can still get great gas mileage with them. Others dont always get similar results because they floor it all the time. SC'ers will get worse mileage than a TT because your always in boost...

its hard to gauge how much fuel is left cause the gauge drops like a rock and at that point I am babying it like crazy to make a gas station. I am at 3k rpm when I am cruising I will take a snap shot of the boost controller next time I am cruising.

Mike