Hey Not A Sr I noticed in your other thread that you didnt have your Air Regulator and Idle Air Adjusting Unit on your intake manifold. When you go megasquirt whats your plan for idling?
I was searching on megasquirt's site and forums and found that several people use their Air Regulator for idling and cold starts. Now we have a Air Regulator but we also have the Idle Air Adjusting Unit. So I posted this on MSEFI.com
pumaking wrote:Alright so I need help picking what IAC to use. Now I've already determined that I wont be using Stepper IAC or PWM. My motor comes stock with a Fast Idle On/off. My car comes with a total of 3 IAC type systems a Air Regulator, IAA Unit which is 2 part Auxilary Air Control Valve (On/Off) and the other is a FICD Solenoid Valve this is used for A/C which my car doesnt have by the way along with no power steering.
I'm gonna be running MSII V3.0 with 2.34 Code with Megatune 2.25 Final and complete FORD EDIS. The motor is turbod stock gonna run about 11psi, and I live in South Florida so it rarely gets cold, average temp is around upper 80's. I'm including the pages from the FSM about the parts along with pictures.
So pretty much my question is should I go with the Air Regulator or the AAC since its the Fast Idle On/Off. I read another thread that the Air Regulator doesnt do a good job with turbo motors. My Air Regulator looks pretty much exactly like the Bosch one.
Also things to consider is my car doesnt have Power Steering I removed it, also no A/C I removed it as well.
This is what it says on megasquirts site about the Air Regulator
MegaSquirts Site wrote:Some people have been using an auxiliary air regulator for fast idle control. SAAB, VW, and many other European vehicles used this system on their early EFI systems (D-jetronic) and on their mechanical injection system (CIS). The great thing about this system is that it does not need to connect to MegaSquirt at all. You just hook up 12 volt, ignition switched, and you are ready to run. Use 12 volts from the fuel pump relay. If the engine is not actually running you do not want it powered up, as it will move to the 'warm' position even though the engine isn't running.
Mount the regulator to the engine such that engine heat can keep the valve closed when you do not need any additional air for warmup. During cold starts, the auxiliary air valve opens to allow additional air into the inlet duct. As engine heats up, a bi-metallic element expands and closes valve. At approximately 140°F (80°C) the auxiliary air orifice is completely closed by the valve.
If you notice our Air Regulator is exactly the same as the Bosch unit.
I got a response from Jerry (diyautotune) stating that pretty much the Air Regulator is our Fast Idle.