Engine/Transmission (1998.5 - 2002) mileage down 3mpg

[captaindean]

ALL THAT I VE DONE IS INSTALL K&N AIR FILTER AND REMOVE

SILENCER RING ANY IDEAS

 

[Steve Campbell]

A small list of things to check...

I am assuming your driving habits have not changed



Fuel filter and quality of fuel.

boost hoses

old tires vs new

IAT sensor dirty

lift pump pressure

working on top half of fuel tank vs the bottom half

Are there any changes in aerodynamics

Does the engine run noticeably hotter or cooler than before



Lots of other things that escape me right now... .

 

[Big White Beast]

Check your right foot.........

Is it mashing the pedal harder to hear that wonderful turbo music?



Do you have gauges? They are a tremendous help in diagnosing what could possibly be wrong.



Garrett