Upgrades

[Adamsessor]

Cheapest and most noticeable performance upgrades??

[Steve]

Off the top of my head

Air Filter Upgrade

Exhaust Upgrade (not that cheap)

Remap

NOS

Fuel Additives

[1JZPWRD]

Buy a DM Driftmotion turbo kit for the NA, best horsepower for the buck. Maybe a 62mm or something similar. The ones mentioned above will not do hardly noticeable power gains, maybe the sound of the air rushing in and the exhaust gases leaving the car. I say turbo it and call it the day...