So I just installed BBK LTH with the o/r x, driveshaft, steeda cai, jlt oil separator and BAMA tune. Ran fine for a good week and now I am getting a check engine
light with codes:
p2197 and p2195.
- O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1 and Bank 2 Sensor 1)
When I start it up I get a choppy idle (almost stalling). After 30 seconds or so it balances out and drives fine from then on.
Here is what I tried, I cleared the codes after each step and waited for MIL to reappear:
1- Removed 02 sensors inspected and wiped off. (only 9k miles on the car so I am skeptical as to whether they could be faulty)
2- Removed o2 extensions and thoroughly inspected, cleaned with electronics cleaner. Zip tied a little further away from the exhaust.
3- Re-torqued entire exhaust and inspected for leaks.
4- Inspected all vacuum lines for leaks.
5-Removed JLT oil separator and inspected for leaks (It had about a 1/4 cup of oil in the can, filter is still shiny clean)
6- Removed MAF sensor, inspected, cleaned with electronics spray. (Still looks brand new)
7- Took data logs on all 3 custom tunes clearing codes in between. (Results below)
8-Removed Steeda Proflow CAI and installed stock air box. Flashed to stock tune.
9- Called BAMA and told them my symptoms. They advised me it couldn't be a tune problem because it is still present with the stock tune. They are too busy to look at my data logs.
So i'm at a loss. I don't want to accept defeat and take the car to a shop. About to order new o2 sensors and extensions and hope it works. Please let me know if you have any ideas, I attached images of the data logs during rough idle.
89 Octane BAMA street tune-Datalog
Measured AFR Bank 1/2
Short Term Fuel Trim 1/2
Spark Advance 1/2