First, I tried to do a search, but no results came out. If you find a thread related to my topic, please bring it up.

My FD has been making a weird click noise, specially at cold temps, such as when first started during the day(always warmed up for at least 5 mins.). What I have noticed is that at around 20-25% throttle, and close to 0psi (meaning no boost, no vaccum), I can hear some knocking from the engine, then a click noise comes from the engine bay and knock noise goes away. I am not very familiar on how the injection system works on these cars, but I am assuming that my secondary injectors are kicking in when I hear that "click" noise. Is my car running lean at partial throttle? I am really getting nervous, because this is exactly what happened last time I blew my engine, except it was @ 3,000 rpms. Any help or suggestions are greatly appreicated.

Mods: Currently 7psi ,DP, MP, sequential twins, no emissions, Koyo Rad, AVC-R(solenoid disconnected for now)