Please excuse my lack of knowledge before I begin. I'm still very new to 1.8T's and in fact, turbo charged engines in general.
Just had my new actuator fitted, but am worried about overboost. I have scanned through all threads on over-boost, but failed to find anything relevant to my query.
Basically, when I first drove the car it was no better than when it had the knackered, old actuator on it. So, I've gradually tightened the actuator arm up so that it now 'flies down the road'.
However, I am very, very worried that the car is perhaps over-boosting, and causing potential damage to the turbo and/or engine. There are no symptoms of overboost, no 'cutting out' or 'hesitations', in fact it's a dream to drive. However I've set the actuator arm about 3-4mm away from it being as tight as it will go. I have no boost gauge or VAG COM equipment....yet!
What I need to know is, is it possible for the actuator to cause over-boost? Or is the actuator only ever strong enough (no matter how it's adjusted) to work within safe parameters? Or is that just total ******** haha? Or is boost regulated and managed by something else, N75? Or would limp mode cut in if it was beginning to cause damage or work outside safety parameters? (Yes I really am guessing now).
Obviously I've been seriously thinking about getting a boost gauge and adjusting the arm of the actuator so it boosts as required, but then I knew you guys would know whether I need to, or I'm worrying about nothing (I'm pretty sure the latter isn't true however ). Also, how do I find out what it should boost too?
Any help would be extremely appreciated. The car drives superbly by the way now I've wound the arm up....mega torquey and smooth!
The car is an A3 1.8T engine code AGU with a stage 1 map if relevant in any way.