Power Mods:
1. Mugen Intake (~$550-$600)
2. Toda 4-2-1 Header (~$950-$1,000) (like stock ground clearance!!!)
3. SMSP Cat (2.5" inlet, 2.25" outlet) (~$150-$200)
4. V-AFC (~$225-$300)
5. Dyno Tuning: $100/hr (probably need 2hours)
-Cost: Around $2,000
-Guaranteed to see at least 8-10hp minimum gain throughout the VTEC power band. (and some below VTEC range)
-No need to really get an exhaust to start out. I/H/C gets you tons of power that you can feel. Exhaust can come at a later time, if you want more power (but with slightly increased noise depending on the exh).
-TUNING IS THE KEY!!!
Suspension Mods (for 99% street driving):
1. Mugen Lowdown Coilover (~$1,400-$1,500) : Complete bolt-on
2. Zeal Coilover ($xxx-$2,000): Many diff models to choose from: Corner weighing is recommended, but not required
What I would do... do suspension mod (Lowdown) and get GOOD tires (S-03, RE-010, G-Force KDW). I say this, 'cuz when you do I/H/C mod, there is one weak link... highflow cat don't last the life of the car (unless you want to spend $1,000 and get metal-core catalytic converters from japan).
G'luck. [/u]