hello everybody!! im new here and have tons of questions?? 1.will a k&nfilter change anything on my car? 2. i want some hid on my car but dont know what to put! i dont want them to be taky blue ,i would like for them to be white!!!

 

If i were you i wont use K&N due to ETB =electric throttle body..personal experience...going to cost you in long run.
Good luck

 

the HID's only turn blue when they are old, when new they are brilliant white. If you go aftermarket you can get different color temperatures as well, 5500 is sunlight, lower looks yellow, higher looks blue... you can check out daniel stern lighting for other light information too.
I've just put in a K&N filter, i'll be posting if I see any differences sometime when I get data.

 

i put the k&N filter and yes there is change!!! engine response better,much better fuel mileage with 91 or 94 octane gas ,and i mean i get about 100 km more on each tank!! driving normally!! engine sound is a bit deeper!! but not much! i drove my friends 2004 mazda3 with real typhoon k&N kit and the difference is amazing!! the deep sound the 2.3l makes reminds me a bit of a vr6!! but his gas mileage is worse than before so...... p.s for the hid thanks alot