usafcobalt

Well first off its teifecta tuned so don't yell at me. I'm working on getting hpt. I've been having problems since I added meth. On my way home today car just decided to jump into limp mode. Yanked the ECM fuse then restarted the car. Ran fine. Now at idle it's really lean like 17. Kinda bounces makes it sound like a small cam. I have no cats so I used to smell the excess fuel now I don't. I'm thinking tune problem but idk what could've change since I haven't had the tune updated for the meth. Any ideas? Bad maf maybe? Sensor have like 100k on them motor has maybe 8k

usafcobalt

One other thing. I had some idle change where it would hang at 1500 for 30 secs or so when I switched air filters. Went from some crappy specter I had laying around to a k and n. more airflow?