Clean it first with electric contact cleaner, 1.99 off the bay, cleaned mine Sunday as was revving erratically and boost gauge jumped to 0 and then back to normal constantly. Since then there has been no issues. Also that boost leak code was solved by niño by replacing all his vac pipes and fitting the forge 007p with free repair kit from forge and he doesn't have it anymore
Yip, took me a crap load to fix my 17705, I don't know exactly what fixed it but i replaced the following...
* Changed the charge pipe for an AGU one, (Mine was AUM).
* Changed every single boost pipe to silicone.
* Changed DV to forge 007p & fitted a revised piston.
* Change TIP (Turbo inlet pipe) to silicone.
* Changed Rocker cover gasket.
* Changed Inlet manifold gasket.
* Did an N249 bypass.
* Changed Injector seals.
* Changed Injector seats for the Seat white revised ones.
Then and only then did my 17705 go away
