Friday I installed the blue fuel injectors from the 1.8L Corolla in my xB, and simultaneously removed the MAF 'sleeve' or 'insert' I'd had in my intake (to correct the P0171 lean code). Got a nice little higher-RPM power boost, happy engine sounds, and apparently it was a good set of injectors, because the car's been working beautifully!
I was hoping the higher flow of these injectors would counteract the lean code, but alas, the check engine light did return (though it seems less often than before). Still, I don't think I'll reinstall the insert... the little extra power is worth clearing a CEL once in a while!
View attachment 81649
View attachment 81650
View attachment 81651
View attachment 81652
Sent from my SM-G973U using Tapatalk
This is how I did mine…
I keep an eye out on my LT and ST fuel trims
I kept the directional air vanes and used 2-6 layers of stockings to slow down the air flow. Without the stockings, after having performing the smoke test, it would throw a P0171, lean code almost weekly and that got annoying.
Ive only had to reset the ECU late winter after experiencing P0172 rich code, which resulted from a dirty filter, possibly from extreme cold, moisture and road salt particles.
I haven’t had any codes since cleaning the MAF last January and only using 3 layers of stockings inside my BLOX filter. Thats about 1500 miles ago.