So, I've been seeing that a lot of people are adding/changing things on their TL's...Is it possible to make a list of all the mods that people are making, in terms of mechanical items...For example, there could be a lot of mods under $150 for lights (neon lights, led bulbs and etc...) which would not fall under mechanical mods....

I am concerned about the mods for performance, handling, and stuff similar to that...

From reading some of the posts, I found two mods that were under $150, and do make a difference on the car:

1) Comptech Rear Sway Bar - $110
2) K&N Air Filter - $40

Could people please add onto that list....Please help me to identify other mods that people could do on their cars that aren't that pricey...Thanks, in advance

 

Comptech Short Shifter = $49 + labor

 

Sorry for the stupid question, but what do those mods do? My '05 is coming in a month and I'll be looking for some mods.