Finnish Q7

Hi guys, before suspecting/changing the turbocharger or EGV valve, buy a good EGV cleaning agent and spray it into the air intake towards the throttle body with the engine at around 2500rpm.Buy an original MAF sensor and fit it to the air passage way. Buy Red Line diesel octane booster and pour the whole bottle into your fuel tank(at least half tank full) . Take your car for a 100km test drive,that includes full throttle.Drive your car like you have stolen it on the test drive. If you still have any fault codes after your test drive, clear them. Take the key out of the ignition and restart the engine after 2 min. This process will clear any carbon build up in the injectors, glow plugs, combustion chambers and throttle passage. The Red Line diesel booster additive will also lubricate and clean your feed pump and lubricate and clean your piston rings. You will regain full power after these procedures.