overboost p0234

Hi Everyone! First of all thanks in advance for your time looking at this post. I have been "shadow" user for some time now, reading all about the faults and quirks of my Astra H. It has been very informative! But the time has come when I cannot solve the problems I have and I am not sure if...

Looking for help on how to chase my pipes for b.c.s and check for any leaks and make sue all the pipes are in all the right places ect. When i start the car i can hear air somewhere from driver side of the car. Wondering if this could be another cause of my horrible p0234 issue.

Hi im looking for help on this annoying problem again with over boosting after purchasing a new boost control. The car usually boost fine for 1st and 2nd gear sometimes 3rd but then it starts to loose power and revs wont go past 3000 rpm ish. I was told that this could of been a map sensor...