can and is it ok to run with out the amal valve disconected have been told to leave it disconected and adjust the actuator arm does that sound right ?

 

No, this does not sound right to me.
I always use this valve. This allows the ecu to control the boost and have different boost levels at different rpm's. Also the boost can be limited when the engine is cold or has a severe electronic problem.

 

The valve does not alter different boost at different rpm's as such, your right foot does this.
It is a device I would never be without, same as I would never use air injectors to control boost, it is a good safety device and the worst that can happen should it go wrong is no boost.
The boost control on the std ecu's is extremely crude but does the basic job with the amal.
tabetha

 

It doesnt?

 

Without getting into a discussion that's only interesting to computer programmers, I would like to point out one of the functions of the boost control in the ecu.
Just before hitting the rev limit the ecu will lower the boost. This will help the 1st stage of the rev limiter (soft limit) to control the engine rpm's. With full boost still applied you would almost certainly hit the 2nd stage, which is the hard limit.
Now if that's not rpm dependent I don't know what is.

 

Wow the boost control is rpm related, the whole point of what I was trying to say is that the oe system is purely rpm related, vastly better systems are rpm AND tps controlled, trust me there is a world of difference when driving with the two different systems, the tps one backs off the boost when throttle is lifted EVEN AT SAME RPM, the net effect of this is there is no surge of boost to die down, it's gone sooner than you can fully release your foot not a second or two later.
I did not mention the rev limiter so don't see the relevance.
Like I said to start with BOOST control, that is ONLY RPM related is monumentally inferior to one which is RPM and TPS related.
This gives vastly better control than the all or nothing control of boost, some(modern) systems also have GEAR dependant BOOST, again something the oe can't do.
I know fully well how the oe systems works, it was one of the MANY reasons I ditched it, oh and having THREE maps for £275 is a bonus too!!
tabetha