guys I just replace my pre-cat o2 sensor (denso) on my 01 bonne. ssei, but i notice that my fuel econ. average has drop from 17.2 to 12.3 any ideas why its doing this ???

Are you driving differently?

_________________

no not at all !! I disconnected the negative side of the batt. when replacing it, im not sure wats going on , Idont have a check engine...........

I dont really trust the instant average. Id reset it and take a 20 min drive.

_________________

When you remove the battery it resets the DIC. I'd bet you're driving around town right now, vs. your normal commute which is probably a mixture. It takes time to reset, just chill. Also, hand calculated numbers are the only fuel mileage numbers that are accurate anyways. Miles driven divided by gallons burned (miles/gallons) will give you accurate #'s.

_________________
Bye Bye:

RIP sandrock

Thanks guys !!!!!!

Mine was the the same it just takes a good day of driving for the dic to get close to what true miles your receiving .. give it a day.

_________________

DDM tuning HID 6000k hi/lows and fogz
FWI, 180*tstate / 18 inch enkie wraped with potenza run flats , danturs tuned pcm,
Home made motor mount / autolite 605plugs/beldin performance wires. Hogan 3 inch dp w/ magnaflow hiflo cat, zzp plot and 3.4 smoothflow MpS, trans go shift kit, 10 inch gtablet mounted running torque app.

I have a kr issue please help....