currently running a AFM 4AGZE in RWD configuration. I bought the car as is with the engine in (very good, tidy conversion). I've noticed that it does not have the electro-magnetic clutch sounding - this leading me to believe that the supercharger is constantly on ??! This is obviously bad!?
How do I wire an on/off switch, and what other tricks can i play with if i purchase a 12psi pulley kit for it? (eg. different boost levels with different switches etc?)
If the car is running the factory ECU - there is a pinout which notifies you that the SC clutch is engaged and boosting.
This is usually done via an LED on the factory instrument cluster, but there is nothing stopping you hooking up a multimeter to that output and seeing if there is any change in the state of that pin (from memory, this is an open collector - meaning that it will go to earth when it is giving an output).
You can find the ECU pinouts over in the tech reference of www.club4ag.com
As far as hooking up a switch to manually engage/disengage the clutch - this is usually a bad idea. An old member did this on his 4a-gze and ended up rooting the clutch rather quickly from engaging the clutch while accelerating (for a nice little "kick"). Personally i dont think there is any need for a manual switch.
If you have an aftermarket ECU.. then i dont know what else you can do other than find the wire in the engine bay for the SC clutch and similarly monitor its state whilst driving.
having a switch is fine as long as you only switch it on at idle. switching it on whilst accelerating will fuck it up quick smart as witzl mentioned.
as to hooking up switches with different boost settings, this would be pointless and a waste of time even if you could do it, if you pulley could produce 12psi why would you want to run anything lower? the engines already doing the work why bleed off free power?
Thu, 18 March 2004 05:47
