M50TU/M52 + Megasquirt, Vanos question.

[Coyote_ar]

Hi guys, is anyone here running a M50TU or M52, with a megasquirt and is using the intake vanos?

AFAIK this engines use the VANOS as an on-off, not a variable position as in later engines.
Ive been told i could use the nitrous output to control de VANOS, so if you did it this way, i would love to hear your experience and any usefull input.

I will be using the M52 without the cam position sensor, just the crank position. for ignition since i wont have the cam position sensor, i will be going for a wasted spark setup using the original COPs, with 6 BIP373.

I would like to keep the VANOS if possible, as a last resource i know i can delete it.

So any advice is appreciated, cheers.

EDIT:
I missed to mention that im running a MS1v3.0 with extra code. I have a 4 outputs used for boost controller, sequential shift lights and the nitrous out for the VANOS.
With the original setup i believe, VANOS is triggered on at 2500rpm and then off again at 5500rpm. Can someone confirm this?

[baptie0]

I am controlling vanos using a gotech ecu, as you say it either on or off so your nitrous out put would be fine.

[DanThe]

The vanos does advance the cam at around 2500-3000rpm, im not sure exactly where though, simple 2 wire solenoid to switch the oil pressure on or off, shouldnt be much work at all to get it going

[baptie0]

it would be good to test a car with a standard ecu to find out exactly when the vanos advances the cam, on my ecu I set it to come on at 1500 rpm then off again at 3000, seems to work well.

[Coyote_ar]

this will be a boosted car, so i guess when to turn it on or off will be part of the tuning process.

but knowing at which rpms the original setting works is a good start point.

regards.

[DanThe]

The live data given through Carsoft on my laptop tells me when the cam is on or off but ive not tested it that much before, will have a play next time I get it plugged in which should be before the weekend

[baptie0]

this will be a boosted car, so i guess when to turn it on or off will be part of the tuning process.

but knowing at which rpms the original setting works is a good start point.

regards.

My car has boost also, my understanding of single vanos is the cam is only advanced below 3000 rpm to help with emissions.

[Coyote_ar]

appreciate it dan.

baptie, dont you notice an increase in low end torque (and in consecuence a reduced spool up time)??

my understanding was that by reducing overlap it helped with low end torque too.

regards

[baptie0]

I cant say, as I have always had it set that way, but it must be beneficial.