Thread: VVL HOW TO: Configure Greddy MSS

Hold down "MODE" to go to between the setup screens. Hold down "select" to adjust brightness. Make certain to push in the rotary knob every time you change something or it wont save it. To set the RPM at which it engages, hold down "MODE" until it goes to a screen where it has an RPM readout (probably 0), then hit "MODE" once. This will go to solenoid 1 setup. Push the rotary button to change the values, push the "select" button to go between parameters (RPM, voltage, temp, boost, etc). Push "MODE" again to go to solenoid 2 setup.

The base settings should read as follows (hold "MODE" to access):

Top=little dash on top
Bottom=little dash on bottom

Pr - Top
C4 - Top
P2 - Top

When the 1 is shown, it says "ON"
When the 2 is shown, it says "ON"

In the actual parameter setup, I have (stock SR20VE cams):

1 (exhaust):

On 4800
Off 4790
Everything else is ZERO unless you set it for TPS or temp (only engages when warm).

2 (intake):

On 4600
Off 4590
Everything else is ZERO unless you set it for TPS or temp (only engages when warm).

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Here's a pic of how to hook it up:


Power source: Most people are confused as to what you should do with the red and orange wires. IMO, tie the red and orange together, tap it to an ACC source (cig lighter) and call it a day. It turns on and off just fine for me. Anything else is just more than it's worth.

I tapped my RPM signal to the back of the instrument cluster rather than to the ECU, I think this is MUCH easier than pulling out the ECU. This would be a blue/orange wire (center harness on the b14 and late B13....excluding the cars that don't come with a stock tach).

Don't tap the speed or any other parameters if you don't have to. RPM is the only signal you really need (unless you absolutely only want to activate the cams under certain throttle position). As soon as I unplugged my speed signal, my problems went away.

Another thing I noticed. Since the MSS provides the ground signal for activation, I'm sure most of you have tapped the other end of the solenoids to a constant positive battery source. It will work, however, I found out that when the car is off, the Greddy draws power THROUGH THE SOLENOIDS. This is not enough current to actually activate the cams, but it has caused my MSS to stay on full time, as well as my radar detector. Here's the solution. Do not tap the cam(+) signal directly to the battery, instead, tap it to a source that is connected to the ignition. If need be, use the same source as the red/orange MSS wires are tapped to and run a 3rd wire through the firewall. I'm still looking for a good source in the engine bay to tap to.

MORE:

The MSS displays the RPM as 3 digits x 10. Therefore if it reads "350" = 3500PRM.

There are 2 or 3 input modes (I don't fully recall all the inputs), but the MSS is a logical device which lets you set 2 or more parameters at a time, so if you set the "Speed" to 50MPH and the "RPM" to 3500RPM, both variables have to be "true" in order for the cams to kick in.

If your display is reading "1, 2, 3, 4,..." rather than "001, 002, 003, 004, ..." you're not setting the RPM, you're probably setting some other parameter, such as speed, tps, or boost pressure. There should be a sticky in the NEOVVL tech library on setting up the base parameters on the MSS, check out that thread.

You have to scroll through one of those 2 silver buttons to make sure you're setting the RPM value. Make sure the other values are at 0 or whatever the default is so that some other parameter won't get in the way of the cam activation.

good job 99sel

Thanks for the info, this would definatley help me out in the future.

GOt a quick question;

On The Intake and Exhaust Solenoids, they both have a Brown/Yellow stripe wires, so does that connects to a power source?

Yes -- one of the wires from each solenoid should go to a power source, the other wire provides ground and is switched by the MSS. It really does not matter which color wire is used for power -- just one ground and one hot wire per solenoid.

Yup, everything worked out just fine for me, thanks man

quesstion... my solenoids didnt come with a pigtail so which side takes the 12v?

Polarity does not matter.

sry mang... dont kno how i missed that post