K&N filter with Evolution

[OneTomcat]

Originally Posted by longshot270

I got the K&N filter and noticed a small difference after installing it. Also noticed a little more power after doing the Gotts mod. Those two by themselvs do not need a custom tune calibration because it does not effect the flow of air over the MAF sensor. I was just chatting with Bill yesterday about it, and as long as the air goes through the same stock tube that holds the sensor, the computer will still know how much air is coming through and keep the A/F ratio up to spec.

I had the K&N drop in before getting the FIPK and noticed the same as you.....plus a tick louder when ya floor it.