I've got one of these (second hand) on its way to me and have got to wondering how things plumb in with regard to the new MAP sensor and the existing one.

What I mean is that does the Apexi sensor just plug straight into the same wiring harness as the oe sensor and effectively replace it, with the solenoid plugging into the 3 pin connector on the side of the PFC, or is there more to it than that?

Cheers!
Jim

 

The map sensor plugs into the 3 pin connector on the PFC.

You have to connect the 3port boost solenoid into the OE wiring.. but if you have a 3port solenoid already then you should be okay with it..

Simon

 

Cheers Simon

So does the new sensor just go in place of the original one then presumably with the wiring for the original sensor just no longer being connected to anything?

Tis indeed a 3 port solenoid on mine already. I thought the one that comes with the boost control kit was only 2 port though.

 

sort of.. you can leave the original sensor connected or remove it.. makes no odds..

but you need to use the new sensor loom and plug the new sensor into the side of the PFC and then toggle the boost control kit option to tell the PFC to use it.

No the new one is a 3port. If you decide to fit the new solenoid.. the wiring is the same.. ie. the wires with the same colour go together.. if you remove the plug from the OE 3port and connect it to the new solenoid it is then plug in and the cars loom is uncut etc..

Simon

 

Ace - thanks for clarifying Simon.

Much obliged. I've just finished fitting new struts/springs/brakes/steering/injectors etc and have got a bung welded on the downpipe for my wideband to go in now etc so am raring to continue with mapping as soon as I get the DECS ECV thing fitted hopefully tomorrow and can get the exhaust back on.

Can't wait!

 

no problem.

 

Just got it installed but I am a touch unsure about the hose connections from/to the apexi boost solenoid.

It has 3 connections - two of which already had the hose barbs in from previous use. These two were marked as "COM" & "NO" (when the right way up). These are presumably the boost in & out connections but not sure which is which but I'm assuming it actually doesn't really matter seeing as it's just a valve.

The third one is marked "NC" and I suspect as it had no barb in it that it's the 3rd port when compared to the oe solenoid, ie the bottom one which vents back to the inlet plenum? That's how I have it plumbed anyway but I can't do a test drive til I get a new ABS ECU so if anyone can confirm these connections I'd be grateful.

Cheers!

 

just recently installed mine
com (short for common) is connected to the actuator.
NO (short for normally open) is connected to the turbo outlet.

the solonoid is actually an pneumatic switch which connects NO with Common when there's no voltage on the coil.
And connects NC with common when there is voltage across the coil

I recommend leaving the stock map sensor connected next to the apexi one.
also connect the stock solonoid just electrically because of possible cel light.

bart

 

Not sure if this is the same for a AVCR, but can I remove all the crap that sits on the inner wing? Boost sol and map sensor?

 

Cheers for clarifying.
I still have the oe map sensor connected electrically but not plumbed. Not sure if it still really needs to be there or not though. As for the original solenoid I'd be suprised if that needs to be hooked up because the apexi one is connected up in it's place so the ecu will still see that a solenoid is attached to the right wires.

 

just seen the PFC bit in the original post.

although the same applies for the solonoid, personally have no experience with power FC, but did recently install the AVC-R.
For all I know the PFC does use the map sensor for boost controll. So you should connect it electrically and connect it to the plenum.

For the AVC-R it's best to leave the stock solonoid and map sensor in place if your not using boost above 1.2bar. this way you still have fuel cut as a backup.
If more boost is needed you can just leave the map unplumbed. but realise no backup is in place to save the engine when things go wrong.
if you remove the map and solonoid completely with the AVC-R you will get CEL light. the ECU checks the map reading during startup for absolute pressure reading.

bart