Headers po!

[ghosthunter]

Actually hindi pa ako sure na magpaheaders talaga kasi sa pros and cons... I'm not into racing din po... Un nga lang I just want more power sa car...

You can start with air filter mods and maybe a low restiction muffler (similar to your stock muffler but pass-thru design internally).

Advance your ignition timing and use higher octane gasoline to avoid detonation.

You can gain some performance that way BUT your fuel economy will suffer.