not saying anything bad about putting performance parts on your car... but putting on to much and things will start breaking, I HAD, K&N CAI, Magna flow exshast (can't spell that), resignator removed, Jet chips tunning mod, racing line performance strut tower brace & grounding kit, and gutted my car...
this is what happened....
the motor couldn't take all the stress and i blew out my throttle body, (replaced it for $350) and the strut bar was messing up my power steering cause you have to modify the ground wire for the power steering, so i took off the strut bar and jet chip and now the car runs great (after i replaced the TB)
point is the motor just cant take that kind of stress and things will stop working so you can go ahead and mod your car just dont take it to far. i still got the K&N, magna flow, and grounding kit and the car runs great!!!
(yes i know i should have got the WAMS tune but it's too late so i dont want everybody to say it OVER & OVER)
BTW i got a 2006 LX9 G6.