Can you get better MPG by turbo'ing? Of course driving hard will take gas, but driving slow? Yes or No?

 

Normal driveing, you should get better mpg but if you drive harder it will be worse.

 

You'll get better mileage with a proper tune AND not driving it hard.

The exhaust is spooling the turbo but since the turbine isnt exactly powering anything on the car (not on the crank) a tune is needed to make sure the extra fuel is actually being put to use better than when naturally aspirated.

 

In short, definitely. The way I'm driving right now, not giving it morethan 30-40% throttle load, I'm getting amazing mpg numbers. I used to have to fill up my tank once or twice a week, but not it's more like once every week and a half.

 

How do your turbos sound when you're just driving like normal? Is it pretty loud going through neighborhoods? I am concerned because my wife and I live in a house surrounded by older people on a golf course... I dont want them to be frightened by me pulling up my driveway... Sometimes we'll come home late from a movie and that is when I want to be as quiet as possible.

 

It's not loud at all, and actually decreased the dB output of my exhaust significantly. I can sneak right up on people

 

when driving normally, sometimes I hear my BOV just whistle quietly for like 5 seconds straight.