Rebelord

iTrader: (2)

I recently changed my plugs to NGK TR55s gapped to .50, replaced factory wires with factory wires. Now, I'm barely getting 15mpg in city and who knows on the hwy. I used to get 17-18city(240+ miles to the tank, barely getting 200). Heres what I have:

These settings are at idle.

Bank 1 Bank 2

STFT 0.00 TO -2.00 0.00 TO -2.00
LTFT 0.00 TO -4.00 0.00 TO -7.00

O2S1 50-850MV O2S1 95-745MV
O2S2 Simm inst. O2S2 Simm inst.

Is my car running way out of poportion?
I only have a Diablo Predator Programmer right now.
I will be ordering HP Tuners soon. Are my O2s taking a
crap and that is killing my mileage? Sometimes I get a MIL
light for slow switching for both O2s. Is that normal? Every
once in awhile I will get the light for slow heating, but putting
that towards my headers.

Thanks for any help.

Ski

Rebelord

iTrader: (2)

TTT Please. Need some help with this issue.

Thanks, Ski