Hey everyone. About a month ago, I installed a Typhoon 69 series CAI from K&N (pics on my profile) and I just had a couple of questions. I know the instructions say to remove the negative battery cable, but I did not do that. I did not see the need. People say the reason is so the engine PCM can reset so it can properly adjust to the increased airflow. The sound it produces is amazing. However, I have noticed no increase in fuel efficiency, and a very slight increase in HP if any at all. It advertises an 11 HP increase and a 14 ft lbs of torque increase. (im pretty sure the 11 horses is a difference that cant really be felt because it isnt necessarily a huge gain) I've also been told that it's ok not to disconnect the battery cable. The engine just takes a little longer to "learn" from its new air flow pattern. Lately though, as I have been driving more.....assertively...I feel a distinct "pulling" feeling as it shifts from 1st to 2nd. She never normally did that, and I knew for a fact that the PCM decreases its torque between gears. it was like she slowed down when she shifted. So the increase of torque is there. Long story short, will my car slowly but surely increase power the more I drive it as the computer learns? and will my fuel economy increase slowly as well? I just want to make sure I didn't really get a $300 noise maker.