Thread: SLS operation question

I suspect the system is working as per standard. With the original system the exhaust does quieten things down a lot to the point it is silent when inside the vechile and motor is running.
the problem of raising and lowering at braking I suspect is caused by your improved rapid response air delivery! As the nose goes down the sensors detect raising of the rear, exhausts air, then it finds whooy, its now low and raises, but because the system delivers air so fast now it maybe is having to overcompensat!
I do recall a mates airbag rear doing a slow adjust in stop/go situations like you describe but I dont recall it being fast or doing it a lot.
Cheers Scott

Originally Posted by schuy1

I suspect the system is working as per standard. With the original system the exhaust does quieten things down a lot to the point it is silent when inside the vechile and motor is running.
the problem of raising and lowering at braking I suspect is caused by your improved rapid response air delivery! As the nose goes down the sensors detect raising of the rear, exhausts air, then it finds whooy, its now low and raises, but because the system delivers air so fast now it maybe is having to overcompensat!
I do recall a mates airbag rear doing a slow adjust in stop/go situations like you describe but I dont recall it being fast or doing it a lot.
Cheers Scott

Thanks for the reply mate,

If thats the case, I'm keeen to try my idea of adding the relay to stop adjustments under braking. My next concern will be that as the system wont be able to adjust then it might through an error.

I supose I'll be testing to see.

Happy Days.

My D2 did exactly what you describe, when pulling up at traffic lights.

As for extending to off-road mode, 20 seconds or so is about right. I wouldn't think the factory compressor would take kindly to running for 2 mins to pump up the bags. They don't have the duty cycle for it.

I wonder if it adjusts continuously?

If I go over a crest in the road and it rises, does the exhuast valve open and then if I go through a dip, does my valve open to raise.

I just thought those imputs would be dampened (buffered electronically) more in the SLABS. I expected it to take readings over a certain time and then if the average of the readings was high or low then make the adjustment. For example take a reading every second for 500 second and then average of those reading was too high then lower. The 500 readings would be a continuos buffer, for every second read, the reading 501 seconds ago would drop off the average. Without something like this the valves would be constantly clacking away for every bump in the road. If thats the case, it's no wonder the standard compressor has problems and I doubt my valves will last long.

Happy Days.

Mine does the same - standard setup.
Difference with yours is much quicker response and more noise than std.
So you hear it more.
The standard compressor is slow to move the bags and the ecu tells the system to lower before it has pumped up too much.
I suppose you could lower the operating pressure to just enough to get off road mode with a full load. Probably about 100-120 psi

Terry

Mine does that.I have a led that tells me when the compressor cuts in.connected under the fuse box to the wire that goes to the compressor.

Well, I'm going to install a relay connected to the brake lights to stop it letting air out under braking. It just seems like a waste of air to me.

Happy Days.

I suppose you could fit flow restrictors into the lines to slow down the response of the airsprings?
Terry