to4b gas mileage

[turbo98eclipse]

was thinking of upgrading to a to4b this summer, but gas prices are getting higher. i know with the new turbo ill be using alot more gas, anyone know how much the mpg's drop with this turbo? thanx

 

[CanadianTSi]

The only way MPG will drop is if your in it all the time, otherwise it will stay the same.

 

[aero_sallee]

If you aren't in it all the time a big turbo can save gas because it doesn't spool all the time. I've gotten a little better around town since I went from a 16g to a holset hx40.