Originally Posted by Mr. Mopar
Sorry guys but there is really no Horsepower difference after you install a K&N drop in filter. It is a better filter that will last forever if you clean and oil it but your butt dyno is fooling you. And it sounds better too???? How can that be with a silenced air box? It's all in your head. Do a real dyno test before and after, then prove me wrong. This otta get a few replies.
I said before that I thought it made the exhaust louder but it was probably my imagination. I think the "butt dyno" works the same. My Charger is muffler delete and has a cai. It seemed to have more power after those mods, but I think a dyno would tell the truth. Things like headers,gear changes,cam or heads are the only way to make really noticeable hp increases.