I see that few members have problems with turbo lag, turbo kicks hard at 4000 rpm, not before. On mz rst boost start rising on about 2000+ rpm but hard kick comming at 4000 rpm. I think it is too late.

Is possible that problem is in ignition timing?

because I am sure that my mechanics dont remove map hose and dont set rpm to about 850, when setting ignition, and few people told me if set ignition like he, ignition can be too retard. if u understand my english