i have a 2003 f250SD with a 6.8 l engine i need to know if would be worth the money to put a K&N cold air filter system on my super duty

 

It's always worth the money to install a good mod. Just depends on what you expect in the return. If you want a big increase in fuel mileage, it won't happen. Not enough to off set the cost anyway. But if you are towing it may make a difference. And it depends on what other mods you have. Do a search on the subject and you will get a ton of opinions. I think most people will tell you to go with a tuner first, then exhaust, then intake if you have the money. Best bang for the buck!

Good luck and have fun.