Hi, I'm in the planning stages of installing the HFS-4 kit in an 06 US STI. I have a few questions I hope Richard can help with.
I'm running stock injectors and I figure I will only need a single injector of 1.0mm and a restrictor of. 0.7mm? Current boost is 21.5. Or am I way off?
Next can I use the HFS-3 wiring diagram located here
http://www.aquamist.co.uk/vbulletin/...ead.php?t=1711 for my car?
In regards to the 12volt requirements I see they need to be switched on with the ignition, but do they need to stay live at 12volts during cranking? I recently installed a wideband O2 sensor that required this and I'm wondering if this system needs this type of power too or can it switch off for the few seconds during cranking then back on once the car is running?
I've noticed on some of the wiring diagrams the power supply for the pump relay says "battery" and others say "switched" can you clarify.
I thank you very much for your time and help.