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