smoking_gun
Member
I bought recently a Golf mk4 tdi with AJM PD engine I got it for a really nice price because it comes with a broken turbocharger.
I decided to upgrade the turbo with a GT1749VB with a mfs compressor wheel that I bought rebuilt from ebay, along the way I fitted some more upgrades like the PD150 intake manifold and physically removed the egr/asv valve.
I've installed everything and now have this issue that as soon as I connect the vacuum line to the turbo actuator it's like the motor itself starts to do a different noise it's like the vacuum pump is overloading the engine I try to run the car like this but nothing it struggles to reach 1500rpm its like it has a huge bottleneck and the motor can't breathe. If I disconnect the vacuum line engine sound comes to normal and the car is actually faster
I've double checked the vacuum lines to the N75 and it's free from error codes from the ECU. I really have no idea what it is causing this anyone here that has experienced this or could suggest anything to try out I would be extremely grateful.
I decided to upgrade the turbo with a GT1749VB with a mfs compressor wheel that I bought rebuilt from ebay, along the way I fitted some more upgrades like the PD150 intake manifold and physically removed the egr/asv valve.
I've installed everything and now have this issue that as soon as I connect the vacuum line to the turbo actuator it's like the motor itself starts to do a different noise it's like the vacuum pump is overloading the engine I try to run the car like this but nothing it struggles to reach 1500rpm its like it has a huge bottleneck and the motor can't breathe. If I disconnect the vacuum line engine sound comes to normal and the car is actually faster
I've double checked the vacuum lines to the N75 and it's free from error codes from the ECU. I really have no idea what it is causing this anyone here that has experienced this or could suggest anything to try out I would be extremely grateful.