Originally Posted by SPF3000
Thanks for the insight. K&N claims better mpg and 6.3 additional hp, which sounds good (more power AND better mileage?!), but I don't want to be playing around with computers and such...definitely not my forte.
You may till the PCM learns around it and adjusts back to stock in a few drive cycles.Hence why PCM tuning is required.
A better flowing air filter does not increase mpg's,a very dirty air filter will actually increase mpg's in any vehicle bought after 1996(gas only),you will loose some power but if driven lightly will actually increase mpg's with up to a 85% clogged air filter.How someone will ask and it's due to the PCM reading the restriction(via engine sensors like MAF,MAP, and O2 sensors) and adjusting the pulse width of the injectors to run leaner,less air equals less fuel hence the better mpg's.