Hey everyone I just bought a black 2006 TSX with Nav a few days ago and I am impressed with the power, gas milage, and the engine. It's a really sharp car. I look forward to taking up a few mods. I am in Southern WI.
Here in a few weeks, I'm picking up Injen intake. It can be converted to cold air intake, or short ram intake. If you want adjustable coilovers, go with Heel Toe(H-T) Form and Function Type 1 or type 2, whichever fits your budget, or the Buddy Club N+ Specs (I have these). If you want to find them cheap, look at the classified tread and you can find it from our members in good shape and at a decent price.
As for wheels, well you have plenty of options, just don't go for something that is cheap looking, the best ones I seen for NBP is Varrstoen 1.1.1 18x9.5 with the offset +30 "waregle19o9" has them and they look great!