Can Megasquirt 2 run BMW dual VANOS?

How about the MS 3?

Anybody got a link or a thread detailing a how-to?

I found a bunch of threads where one guy would ask and 400 people would call him a cheap idiot and try to sell him a Motec but no "Success! S54 Megasquirt runs!" .

The main problems with VCT are 1) another pulse wheel to detect (which you have to sync with the first one to know exacly where you are) and 2) drivers to run the VCT.

For the BWM- x2, since they are independant.

VCT is no picnic to tune.

I suppose for my purposes... I can just remove it and lock the cams in the high RPM position. I thought it would be cool to have it there but the motor is unlikely to ever see anything south of 3500 RPMs and I do not see anything but KMS as a tried and true way to operate them. I think the $4k for that unit might be used to better effect buying a 2nd spare motor.

Yes, you can.

Unless you are using a double VANOS BMW that is throttle less. Then the variable VCT (yes, double variable) acts as the throttle. Even more complex to drive.

But I've considered a similar solution to the +2002 NB motor solution that is so popular in CSP. May give up a little down low, but most VCT calibrations I've seen are pretty stationary at the top end. Unless its used to prevent something happening.

MS2 can handle single VANOS, but for dual VANOS you're limited to on/off.

MS3 will do this, continuously variable, with the latest alpha code. James Murray had dual VANOS running on a V10 a while back.

Is the valve timing "infinitely" variable between a set retard and advanced point. or is it simply "on or off," advanced/retarded? Also is it simply RPM triggered, or also load sensitive?

Best case of it being only RPM triggered and on or off, an RPM switch and a relay should do what you want.

I come from the Volvo world, but I don't have any experience with the VVT, but I read this recently. It pertains to later model White Blocks but you may be able to glean something useful from it.

Lucky on VS wrote: You can run a CVVT system on a car that didn't come equipped with it but you'll need a controller. To control the CVVT solenoid you only have to vary the duty cycle - on time. The frequency is fixed at 250 hz. Acceptable duty cycle ranges from 20% to 95%. The easiest way to control it is by setting up a 555 timer to trigger a TIP120 power transistor off a boost pressure sensor. 555 fixes the frequency at 250hz and the change in boost pressure (resistance change) will retard/advance the cam as load (boost) is increased. Basic knowledge of electronics and IC is required to implement.

• Lee

In reply to bigdaddylee82:

Most modern VCT (and in this case VANOS) is infinitely adjustable. can change on speed, load, engine temp, boost, air temp, altitude, etc etc etc.....