knock sensors will defiantly pull boost if they are not working properly. There are two,but it only takes one to go bad, and they don't always log a code. at least that was my experience.
When I first got my 3b s2 it would not perform like my s6.
I chased the problem for ages ,changing one thing after another, and swapping parts over from both cars .
Audi had it, and said it was the turbo, as there was no fault codes logged.
Someone on hear mentioned knock sensors ,so I changed the front one first and it fixed the problem.
Not saying it is your problem ,but don't rule them out.
When I first got my 3b s2 it would not perform like my s6.
I chased the problem for ages ,changing one thing after another, and swapping parts over from both cars .
Audi had it, and said it was the turbo, as there was no fault codes logged.
Someone on hear mentioned knock sensors ,so I changed the front one first and it fixed the problem.
Not saying it is your problem ,but don't rule them out.
Comment