[ecomodded]

I to have thought that a restricted intake would increase mpg , I think that's why my vw tdi gets such great mileage, it has 225,000km on it and the 1.9 tdi is notorious for clogging its intake from the EGR.
In effect lowering the cars hp and subsequently the fuel consumption as the cars computer always maintain a clean burn threw the fuel injectors.

I expect when and if I clean my intakes filth out my hp will increase and economy will decrease, unless i can drive like a saint 100% of the time.