Hello, I'm new to the Fit forum, but I have been having an issue with my 2011 Base Honda Fit.

I do a lot of cross country travel, and I noticed that my engine gets pretty darn hot driving 80 mph across Texas, so I was hoping to boost the cool air flow to get better better MPG.

Installed the short K&N cold air intake, definitely can hear the difference, but my check engine light keeps signalling I'm driving the car too lean. Too much air from the intake, so I've reset/cleaned my ECU from what I saw on Reddit, cleaned the air intake, but I'm not getting any results.

My next steps I've come up with could be buying a $500 Ktuner, putting in a $250 exhaust system to better air flow out, or just giving up on the $250 cold air intake.

Any suggestions?

 

A short intake isn’t going to bring in cool air fwiw

I’d just put the stock intake back on. Seems weird an intake would make the car run lean, sure there’s no other issue?

 

No other issues that I've been able to isolate, mechanic that was helping me with a check-up helped check all my connections and tubes. He recommended I run with it for a month to let the ECU recalibrate, but to no avail. Is that even how ECU's work?

From what I've read about putting in air intakes, it's a common issue with Honda Fits. This is the first car I've ever really modded, so I'm still learning a lot of things. Would manually adjusting the air to gas ratio with the Ktuner have any impact? I guess the goal would be to somehow teach my ECU to run with the intake

 

I have the AEM intake and it doesn't throw any codes.

 

I've heard that it's the K&N CAI that's the issue. I believe the diameter of the tube isn't the same as the stock intake, so it causes the MAF issues. This is a K&N thing only. Other brands do not have this issue.