Intake and headers difference on fuel efficiency

[sparkys13]

okay so i drive a 1998 and fell that after i had installed both the Intae and headers i was getting less miles per gallon. Is this common?? opinions

 

[Samurai_Blue]

okay so i drive a 1998 and fell that after i had installed both the Intae and headers i was getting less miles per gallon. Is this common?? opinions

were you smashing to hear how it sounded?

 

[sparkys13]

not really a difference in engine exhaust tone??

 

[turbteg-gsr]

well since u moved the o2 sensor a lil u would recomend reeplacing it since u got some different headers u should actually gain mpg but it depends on if u smash on it

 

[sparkys13]

i dont smash on it but it seems to waste gas pretty quick. idk why??

 

[Samurai_Blue]

some headers move the o2 in a spot where it makes the ecu pour more gas in

 

[sparkys13]

o2 sensor ill check, where is the best spot to put the o2