Hello, I am a fresh new member to this platform. I just recently picked up a 2011 evo x mr. After I picked it up I got a code for system to lean on bank 1. Whenever I get on the car the CEL will flash meaning it’s detecting knock. ( Only happens when i’m on the floor) The previous owner put it on a pop tune that he flashed on the car. Not a cobb tune. Does it seem like I have a bad tune? o2 sensor? dirty maf sensor? Sorry if I explained this like an idiot, just not quite the expert. Thank you!

 

A lean condition on bank 1 could be caused by several factors, including a vacuum leak, a faulty oxygen sensor, or a dirty mass airflow (MAF) sensor. A bad tune could potentially contribute to these issues as well. It's difficult to pinpoint the exact cause without further diagnostic testing.

Here are a few steps you can consider:

1. Check for any visible signs of vacuum leaks, such as cracked or disconnected hoses.
2. Inspect the oxygen sensor(s) for any damage or contamination. If necessary, you may need to replace the sensor(s).
3. Clean the MAF sensor using a specialized cleaner to remove any dirt or debris that may be affecting its performance.
4. If the issue persists, it might be worth having a professional mechanic or tuner evaluate the tune and perform a diagnostic scan to identify any potential issues.

 

It would be impossible to add up all the hours of auto repair videos I've watched over the last 8-10 years. THIS ONE, though, MAN!! In only 46 mins... I'm speechless at how easily I absorbed every concept and it made logical sense. I was starting to diagnose ahead of you! You sir, not only have a gift of mechanics and troubleshooting, you have an even greater gift of TEACHER. Never boring, just a concise step-by-step stream of logical information.



snaptube vidmate