AFR bouncing up and down randomly
Lowport with S4s, Nistune, N60 MAF(regrounded), and 2.5 SSAC.
This is messing with my fuel mileage, and with my head. I'm really confused about this. I don't know if it's an injector issue, or possibly the oxy sensor, or the MAF, or something else like plugs/wires.
I've recently cleaned, and oiled my filter. Afterwards my AFRs went back up, and the next day down again. So, I cleaned the MAF, then the same thing. Today just driving to the gas station, and back it was up\down the whole trip back.
My plugs(BKR7E) are pretty fresh, and I checked them a couple weeks ago to find that they were normal. The wires are stock type made by standard ignition.
I put all new O-rings on my injectors about 6 months ago because one was leaking. My AFRs were good for a long time after. At cruise I'd normally see mid 15s to low 16s, but now lately I've been at mid 12s to 13s, and sometimes randomly in the high 14s.
Today I ordered the bosch 15727 oxy sensor after I read about regrounding if you have an SSAC. My mileage lately has been between 21-30 MPG, and it used to be 30+. I still drive the same as always with mixed city/highway.
This is messing with my fuel mileage, and with my head. I'm really confused about this. I don't know if it's an injector issue, or possibly the oxy sensor, or the MAF, or something else like plugs/wires.
I've recently cleaned, and oiled my filter. Afterwards my AFRs went back up, and the next day down again. So, I cleaned the MAF, then the same thing. Today just driving to the gas station, and back it was up\down the whole trip back.
My plugs(BKR7E) are pretty fresh, and I checked them a couple weeks ago to find that they were normal. The wires are stock type made by standard ignition.
I put all new O-rings on my injectors about 6 months ago because one was leaking. My AFRs were good for a long time after. At cruise I'd normally see mid 15s to low 16s, but now lately I've been at mid 12s to 13s, and sometimes randomly in the high 14s.
Today I ordered the bosch 15727 oxy sensor after I read about regrounding if you have an SSAC. My mileage lately has been between 21-30 MPG, and it used to be 30+. I still drive the same as always with mixed city/highway.