Yu should be the one to have the longest list. Anyway, to give some example. Heres some of my mods.(anyway I'm won't be listing out my sound system as I already shown it before on other tread) :_:
RD1 1.8l Manual.
Throttle body custom Mod (to make it open up quicker)
Spark Plug Cable (9.2mm very slight improvement)
Platinum plug (don't really feel it, may be will try iridium next time)
Lighten custom pulley (acceleration quicker respond, rev and pick up faster. Blacksamurai should know this. He tried before)
SARD Fuel Pressure Regulator (used to match my tuning preference)
Direct twisted center bullet (this replace the cat convertor giving more flow)
Fujitsubo Legalis R muffler (One of the best mod I had, great sound. Deep like supra)
DIY direct air intake (give more mid range power)
DIY manifold coolant bypass (cooler manifold = cooler air = better power)
Pivot RPM warning light (very important for quick shift)
Razo Gear knob (providing excellent grip)
Razo Pedal
SpeedWorks Strutbar
Performance front brake pad (slightly better than stock)
BSA 355 TEOT Series 17" Wheel (very good quality and craftmanship)
HanKook Tyres (good grip and quite)
Eagle Eye HID 8000K headlight (super bright at night)
LED dimmer light
That for now, I think :_: