2026-10-08 · 5 min read
Subaru WRX STI Headlight Upgrade Malaysia
The WRX STI VA comes with projector-style headlights. Over time, headlight lenses yellow and cloud over in Malaysia's UV-intense environment, reducing light output. Options include professional lens polishing (cost-effective short-term fix), OEM lens replacement, or upgrading to aftermarket projector units with LED or HID conversion. Ensure any HID/LED upgrade uses properly shielded projector units to avoid dazzling oncoming drivers — this is also relevant for Puspakom compliance.
Subaru WRX STI Headlight Upgrade
- STI headlights: VA STI in Malaysia — HID projector standard (D4S); fog lights halogen; HID output is good from factory; D4S bulb replacement when one bulb dims or fails; upgrade to Philips Ultinon D4S 5000K for brighter white output
- STI LED retrofit: STI HID to full LED retrofit is possible with bi-LED projector retrofit kit; popular mod in Subaru community; ensures Puspakom compliance with type-approved kit; improves lighting significantly over HID; projector bowl condition must be checked before retrofit
- STI track headlights: STI driven at night on track — stock HID is adequate; if STI used for night rally or track events, auxiliary driving lights can be added; any auxiliary light wiring must be fused correctly; daytime track use does not require headlight upgrade