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17964/P1556 - Charge Pressure Control: Negative Deviation
Possible Symptoms
Reduced power output
Limp mode
Possible Causes
Boost Pressure too Low
Hoses/Pipes incorrect connected, disconnected or leaking
Charger Pressure Control defective
VNT (variable nozzle turbo): nozzles stuck
Solenoid Valve for Boost Pressure Control (N75) defective
Possible Solutions
Check Hoses/Pipes to/between Components
Check Solenoid Valve for Boost Pressure Control (N75)
Check / Clean / Replace Charge Pressure Control
Check / Clean mechanism for variable nozzles
Category: Fault Codes

Hoses have been checked and all are tight
 
Getting a set of d90s like these, just paid the deposit pick them up in September. But the centre is gloss black but getting them anthracite. Should look good with my grey touches, what spacers and sizes do I need. The fronts are 7s rear are 8s

5284f887-9506-2bfe.jpg
 
Car is now fixed sooooo happy, the whole problem was due to a **** garage that put my timing on wrong, it was out two teeth. Which was causing the loud intake noise and power loss :/

But all good, now have my blue forge tip fitted now need jetex filter, and iv picked up a set of fk adaptors for my Porsche wheels