I've had the P0171 code for a long time, the car basically runs fine, idle is fine, and it doesn't miss, but I generally don't push the car. The P0171 popped up a week or so after I got the secondary air valves and pump deleted (block off plates at the head), and the accompanying secondary air system codes removed. The P2096 showed up more recently, maybe the last month. I suspect an O2 sensor, a cat, or an exhaust leak. I checked my air box, ran a fuel system cleaner, and cleaned the MAF, but the codes persist. I have 115,000 miles on the car. If I get a chance I will use soapy water and spray bottle to look for exhaust leaks today. Can anyone suggest what else to look at? I was able to make a log today with a Tactrix 2.0 using the SD card, view it here: https://drive.google.com/open?id=0B9wxmOVRQOcXZk1BN0hVclBKbGc
Second question, how many catalytic converters are on this car after the turbo? I found this diagram of the exhaust http://estore.subarupartswarehouse.com/images/parts/subaru/fullsize/S11_44001329.png
Is there a cat on the downpipe, a cat next to where the O2 sensor plugs in, and ANOTHER car on the next intermediate pipe? They are labeled 44102B, 44102BA, and 44102BB in the diagram.
Second question, how many catalytic converters are on this car after the turbo? I found this diagram of the exhaust http://estore.subarupartswarehouse.com/images/parts/subaru/fullsize/S11_44001329.png
Is there a cat on the downpipe, a cat next to where the O2 sensor plugs in, and ANOTHER car on the next intermediate pipe? They are labeled 44102B, 44102BA, and 44102BB in the diagram.