VVL Solnoid for SR20VET

[Options13]

I am in the process of doing the VVL head swap on my S13.

On the solenoid itself there are 2 plugs (4 wires total). I am not entirely sure where these wires go?

I am running the AEM V2 30-6600 Box. I am just curious where i need to run these wires.


Let me know!

[brndck]

are you using p11 or p12 solenoid?
aem should provide a pinout, and instructions for which pins to use for rpm dependent solenoid trigger

[Options13]

i have the p11 solnoid. Is there a write up somewhere? i didn't see anything in ecu manual about that.

[brndck]

not sure exactly what you're trying to do. do you already have a normal sr20 harness, and you're just trying to add wiring for the vvl solenoid?

[Options13]

I just want to be able to trigger the VVL Solnoid with my ECU i just notice there are 4 wires that come from the Solnoid, i'm just not sure if i just wire 2 wires or what.

[hobbs]

i have the p11 solnoid. Is there a write up somewhere? i didn't see anything in ecu manual about that.

Look a bit harder, all the information on outputs that can be allocated to other functions is in the manual.

[jr_ss]

The solenoid is triggered via ground through the ECU. One wire is 12v power the other a ground. Each solenoid should have two wires, not 4. P11 VE's had two solenoids, one for the intake, the other for the exhaust cam. The P12 cams were optimized and reduced the solenoids to one to control both switch over points at the same time.

[Options13]

Yup, i have the P11 solnoids.

So from what i understand I wire 1 wire to a contant 12v, and the other wire to a switched ground on the ECU.


https://scontent-lax3-1.xx.fbcdn.net/v/t1.0-9/14650313_10153880378391657_6005877374588775404_n.j pg?oh=47c0b696025410b91a33f2887039bc0f&oe=589C4033

I pulled up the ECU pinout and saw i could wire them to PINS 10 & 11.

OR could i just wire both the wires from the solenoid to just 1 PIN since i would want both cams to kick on at the same time?

[hobbs]

Use a relay, you then have zero chance of damaging the LS driver or the ECU in the event something happens to the solenoids. I would also wire the solenoids to different outputs, depending on the cams you can pick up some power by switching them at different RPMs.

[Options13]

ahh ok, so i'll wire them to those two outputs with relays.

I'm running the N1 cams with a gtx3076, does anyone know ideal rpm switch points for this setup?

[jr_ss]

An ideal switch over point will need to be sorted on the dyno. Start at 4500 for both and change from there. I know at 4K on my setup I had a dip in power. Mine currently switch over at 4300ish. Plans are to swap to N1's and retune. I did not play with switching cams at various rpms, but I certainly will next tune.

You should have some spare outputs on the AEM you can use to wire up. You don't have to use relays, but it is a nice safe guard.

[Def]

Use a relay, you then have zero chance of damaging the LS driver or the ECU in the event something happens to the solenoids. I would also wire the solenoids to different outputs, depending on the cams you can pick up some power by switching them at different RPMs.

How have you guys seen the reliability of a typical micro/mini relay on switching cams? I figure on a typical track weekend they might get triggered a few hundred times on the high side if the switch point is high enough. I wouldn't think that'd be an issue for relay longevity in general (and can always bring a spare, but hard to diagnose at the track probably), but I like to design for reliability first.