help with tune

[davidTranter]

Hi I have a 2012 Mazda speed 3. Has a K&N intake cobb down pipe and a catless race exhaust. I am currently running 93US_98EU Octane High Load + CPE CAI + Corksport Race Pipe with Crackle and Pop v1.06 with decel crackle and pop. It was the only one i could find that would keep the codes for the O2 sensor (P2096) and Oxygen Sensor codes (P0137) off. But that have recently returned and not sure what else to do. The car was tuned when I first got it but then had to replace the ECU and lost everything. I am new to this and am looking for some advice on tuning or fixing the issue.

[mituc]

Please download this logging preset: https://www.dropbox.com/scl/fi/s7e5zpu3 ... upuzz&dl=0
Go to Dashboard -> presets -> import, import the file and then click "Load" to load this in to your dashboard. Take a 30 seconds idle log with the engine warm (like, when you just came back from work) and also 2-3 minutes normal driving log (on your way back home or to work, also with the car warm).
The codes that you've mentioned may or may not be connected. The 2096 may indicate indeed a MAF calibration issue, but the 0137 is more of an electrical problem (secondary O2 sensor). This means there may be several things going on: you may need a MAF cal and you also have to inspect the secondary O2 sensor, maybe the previous owner disconnected it to be able to command leaner closed loop mixtures in the tune.

Please post those logs here or send them to me in a private message, and let's look at what's going on. Also, if you know the whole engine-related mods (intake, exhaust, MAP sensors, intercooler, what type of BPV/BOV you have, if you have upgraded fuel pump internals, and so on) please make a list and include that in your next message.