I installed the ATAK on my 23 Performance. It has a noticeably more throaty sound as compared to stock at idle. Higher RPM's in lower gears, you get a slight drone, but IMO not annoying. 6th gear is really not noticeable drone wise. Windows down, I like the growl it gives off going through the...
You don't have to remove the knob. I did to change out the shift knob. It made it easier to install the button. Also removed the knob with 2 strap wrenches. No damage to original, just a little elbow grease.
I like the throaty sound it gives off. Some may say it has a drone to it. I have upgraded the sound system and placed matting in the trunk and doors. That has muffled the sound a little with the windows up but, I never minded the sound at all.