Astra, Corsa, Zafira, Meriva, Adam, Cascada, Agila
I have a 2007 z19dt zafira.
Recently ive had no boost before 2.5k then its like normal. no smoke, no noises, nothing out of the ordinary other than lack of boost.
All appeared after failed MAP sensor and replaced it. Now running again but lacking about 0.3 bar off the demand on ECU