Originally Posted by jccreed
05 f350 6.0 stock, 4x4 dually, would like better mileage and was told a change in breather systems was a good place to start,
any suggestions would be more than welcome
I'd suggest leaving the stock intake in (do the zoodad mod though), replace the exhaust with a 4" turbo back set up and get some sort of monitering system or gauges.
I wouldn't expect to much (if any) of an increase in HP or fuel milage, but it will set you up for the next step......... tuning
, this is where you'll see an increase
Oh yeah, and a fresh oil change and new filters (oil and fuel) is always a good thing