I have an '07 GT/CS 5 speed that is all stock. I do not have the cash right now to add CAI but was wondering if it worth it to add a K&N air filter for now as I have 19k miles with the original air filter, or do I replace it with a regular stock air filter. Will the K&N really give extra HP and gas mileage? Just rying to weigh out my options as money is a little tight.

Thanks

 

Everything I've heard is that the gains, if any, are minimal. however if you need a new replacement air filter, the K&N is a good one. On the other hand if the K&N filter is significantly more expensive than the Ford stock, Fram or other after market filters, then i'd probably buy one of those, especially if you're bucks down right now.

 

what Andy said

 

yup, I wouldnt worry about changing it until its needed or until you get a CAI, which is where you'll see a pretty decent gain from a simple bolt on, and the tune makes a huge difference

 

You can get a Fram AirHog which is a better made version of a K&N filter. If you get it from Amazon and mail in the Fram Rebate form they actually end up paying you for the filter. I purchased it for my stang and the total was like $16.00 amd Fram is offering a $20 MIR so I made $4.00 on it.

 

Don't change anything until you can afford the CAI and tune.