We often overlook many aspects of our vehicle until the damage has been done. One easy area of attention to help keep your ECU informed and your engine happy is the MAF (Mass air flow) sensor. This sensor unless your are tuned upon speed density, reads the volume of incoming air and sends the info to the ECU to allow for the proper amount of fueling to keep your air fuel ratio where it needs to be. At idle/cruising it should be stoichiometric which is 14.7:1. Without proper input to the ECU these calibrations will be off causing your engine to run either too rich or too lean, both having their caveats. Which can cause sputtering, misfires, poor fuel economy, etc.

Timeframe

For 04-07 Wrx’s and Sti’s this is a very easy task, and with many Subaru Maf’s are located right on top and very easy to get to. 15 mins will allow you to remove, clean or replace. As long as you don’t drop the two little screws…