Originally Posted by slybydesignw210
Thanks Greg, I purchased the cleaner but I have heard if no codes come up not to touch it. So I will hold on to the cleaner with hopes never to use it but if I have to I have it on hand. What are the differences one feels when replacing or cleaning MAF?
Throughout the myriad MAF threads I've tried to stress that there often are no symptoms of a failing MAF beyond a trouble code or CEL (a "fault condition"). Since in my experience cleaning resolves something less than half of MAF issues, cleaning an MAF following a fault condition -- if contamination was not the cause -- will result in no difference to the driver.
However, when the MAF is dirty and that triggers the fault condition, then cleaning it will restore some amount of driveability, fuel economy, emissions control and performance.
The same holds true when the fault condition is unrelated to contamination and the MAF is replaced: the driver may sense some additional performance, throttle response, smoothness, etc.
For a good one look down in the sensor source thread, an oil driver changed his MAF and immediately noticed an improvement in driveability, smoothness, performance, etc.
As you know I recently replaced my MAF (after cleaning attempts failed to clear the code) and I've yet to notice anything. Sometimes I think it has a bit better throttle response and shifts perhaps smoother, but that's just as likely to be a psychosomatic response (basically, I changed it, so I think I notice something).
Bottom Line? You may not notice any difference after replacing or cleaning a MAF, but at least you'll know you've restored your car and it's emissions systems to proper working order. And your gaze won't be constantly drawn to the CEL.
Take care and enjoy the ride,