Alright, im going to get a third gen for my first car, and i am thinking about forced induction. Then came up the problem with gas mileage. Which one is better for gas mileage? I want a fast car, but i dont want a gas guzzler, there inlies the problem. Im nt very up to par with forced induction technology, so can someone help me? I hear that a Turbo is better with gas mileage, but you can kinda get the same results with a bypass valse on a supercharger, but i dont quite know if thats true. Also, while adding, what is a ballpark figure about how many mpg lost? I think thats it, thanks everyone, mike

 

the MPG depends on the driver, my grand national gets 11 miles a gallon- but its get bigger injectors blah blah blah- its not the way it came off the showroom floor- if your looking for a economy car- dont get a 3rd gen- not to say they are gas gusslers- but they arent meant to get good gas milage- its a sports car. also what would this be going on? a V6 or V8.

 

350 tpi

 

if you can stay outta the boost, i heard Vortech claim that it improves the mileage, but it's all about how heavy that right foot of yours is!

 

honestly man- you think you can stay off the fun pedal- then you get that first taste of boost- and its all down hill from there, soon your making 11 second passes from street light to street light lol. you need to have alot of restraint to not play when you have forced induction- its adictive

 

Even with a bypass valve the S/C is still being spun over by the engine. In cruise mode, the engine doesn't need to make much HP to push the car down the road, and wasting even little will drop the MPG.

A turbo is purely, an on-demand devise. Removing a muffler drops the *added* backpressure that even a free wheeling turbo generates. BTW, a turbo acts in part like a muffler.

The problem with either is that once you step up to the bigger HP numbers, in just a few seconds of WOT, you've ruined your average MPG for that tank of gas.

 

You’d be surprised… Eaton has demonstrated that their blowers can draw less then 1hp to turn at cruise with the bypass open and cost in the range of ¼ - ½ mpg if you never get into boost.

heh, I just put together a fuel system that can empty a 16gal tank in 7 min at 50psi… now for the boost…