Stage 1:
(External Mods)

-Fuel Regulator
-Adjustable Cam pulley
-Plug cables (I’d recommend NGK) It has served me well over the years and still is.
-Extractor
-Exhaust piping (I’d recommend 2″) For future purposes. Plus you won’t lose any gains as of now either. From my experience.
-Don’t forget to change the muffler as well 5zigen 304 replicas are real nice unless u can afford the real deal
-Open Pod (HKS / Apexi)
-Lightened Crank Pulley

These are basic mods which are plug and play & I reckon is doable. It is good to hear that you are doing it stage by stage. Then you get the pleasure of learning how the engine improves with every stage of modification. (Knowledge is Golden)…

….I’ve seen fast 1.6 4g92s (NON Mivec) shaming 1.8 93s and even 1.8 MIVECs. One example is the SDB champ for Sepang Drag Battle. The blue satria 1.6 92 NON Mivec. 11.7 – 11.9 seconds for 400M!!! That is a force to be reckon with.

Stage two:
Prolly u would need to touch on the internals:

P&P head
Bigger TB (Mivec / VR4)
Bigger Intake Monifold (GSR Turbo)
Street Cams – Reprofiled Mat Speed / PowerZone / Pipercam etc…
Piggy Back (E Manage Blue / SAFC2 depending on ur taste)
Metal Head Gasket – 1.5 / 0.4 Depending on how high a compression you want.
GearBox – for 4G9x to Mivec (LSD / Non LSD)

Stage 3:
Not so fun… ok completely hedious / ridiculous to drive daily but Rocks when you smack the pedal to the metal!

-Get rid of the street cams as it is time for the Racing Cams to shine
(Billet / Reprolied is really up to you. Billet Cams = RPW. Check whether you need racing valve springs with RPW as it would depend on the degree of the CAMS )
-High Compression Pistons
-P&P Block to support bigger pistons (Bigger is always Better!)
-Racing GearBox
-Bigger piston
-4 – 1 Extractor from powerzone / use Vtec 4 – 1 but have to mod the kaki.

copied & paste from the other forum, just for our info and guidance, cheers…