The N75 boost pressure control valve is situated to the rear of the engine bay bolted to the bulkhead. There are two bolts that need to be released to remove the N75 valve.
|VW Golf TDI N75 Boost Pressure Control Valve Removal|
|VW Golf TDI N75 Boost Pressure Control Valve Replacement|
|Close up photo of VW Golf TDI N75 Boost Pressure Control Valve Replacement|
Once fitted the sluggish performance had not been resolved but the throttle response seemed much sharper and the acceleration more responsive. Next step is checking the vacuum lines for any leaks.