Spluttering over 5000 revs as if not receiving enough fuel. Fault codes listed

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Reeceyy:
Alright guys, my car has just started having this problem where when I am accelerating hard, the car has these spluttering pull backs from around about 5000 rpm to the end of the rev range. Its as if its not receiving the right amount of fuel for the amount of revs that it does. Under 5000 rpm it pulls like a dream, but after 5000rpm it splutters and jumps. It does it in all gears. Its never done this before. I really don't know what the problem is but below is what come up on VCDS. Maybe someone has knowledge of what it could be with these symptoms.

The oil doesn't smell like petrol and the level is fine. I always use RON98. One thing i will mention is that i notice this problem after doing a 800 mile drive.

The car is stage 2 - 289bhp. (It doesn't have the hpfp piston)

Thanks.

Reeceyy:
These are the fault codes that popped up on vcds:

10 Faults Found:
000665 - Boost Pressure Regulation
P0299 - 002 - Control Range Not Reached - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 3
Reset counter: 255
Mileage: 234556 km
Time Indication: 0
Date: 2000.00.00
Time: 20:45:22

Freeze Frame:
RPM: 5476 /min
Load: 90.6 %
Speed: 148.0 km/h
Temperature: 89.0°C
Temperature: 25.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 13.970 V

000808 - Knock Sensor 1 (G61)
P0328 - 001 - Signal too High - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 7
Reset counter: 255
Mileage: 234832 km
Time Indication: 0
Date: 2000.00.00
Time: 02:26:03

Freeze Frame:
RPM: 2598 /min
Load: 34.9 %
Speed: 106.0 km/h
Temperature: 91.0°C
Temperature: 30.0°C
Absolute Pres.: 890.0 mbar
Voltage: 14.224 V

000819 - Knock Sensor 2 (G66)
P0333 - 001 - Signal too High - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 14
Reset counter: 255
Mileage: 234832 km
Time Indication: 0
Date: 2000.00.00
Time: 02:26:03

Freeze Frame:
RPM: 2409 /min
Load: 35.3 %
Speed: 98.0 km/h
Temperature: 92.0°C
Temperature: 29.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 14.224 V

012555 - Low Pressure Fuel regulation
P310B - 002 - Fuel Pressure Outside Specification - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 234999 km
Time Indication: 0
Date: 2000.00.00
Time: 04:08:22

Freeze Frame:
RPM: 1962 /min
Load: 12.2 %
Speed: 39.0 km/h
Temperature: 89.0°C
Temperature: 61.0°C
Absolute Pres.: 940.0 mbar
Voltage: 13.589 V

004243 - Bank 1; Fuel Measuring System 2
P1093 - 008 - Malfunction - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 0
Fault Frequency: 4
Reset counter: 255
Mileage: 235662 km
Time Indication: 0
Date: 2000.00.00
Time: 04:42:27

Freeze Frame:
RPM: 2375 /min
Load: 7.4 %
Speed: 48.0 km/h
Temperature: 50.0°C
Temperature: 36.0°C
Absolute Pres.: 930.0 mbar
Voltage: 14.351 V

000135 - Fuel Rail/System Pressure
P0087 - 002 - Too Low - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 8
Reset counter: 255
Mileage: 237008 km
Time Indication: 0
Date: 2000.00.00
Time: 20:47:40

Freeze Frame:
RPM: 4147 /min
Load: 44.7 %
Speed: 141.0 km/h
Temperature: 90.0°C
Temperature: 25.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 14.097 V

008759 - Oxygen (Lambda) Sensor B1 S1
P2237 - 008 - Pump Current Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 0
Fault Frequency: 2
Reset counter: 255
Mileage: 237483 km
Time Indication: 0
Date: 2000.00.00
Time: 19:40:28

Freeze Frame:
RPM: 2167 /min
Load: 7.4 %
Speed: 44.0 km/h
Temperature: 76.0°C
Temperature: 27.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 14.097 V

000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 001 -
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 237634 km
Time Indication: 0
Date: 2000.00.00
Time: 10:00:43

Freeze Frame:
RPM: 6317 /min
Load: 80.0 %
Speed: 88.0 km/h
Temperature: 85.0°C
Temperature: 24.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 13.970 V

000771 - Cylinder 3
P0303 - 001 - Misfire Detected
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 237634 km
Time Indication: 0
Date: 2000.00.00
Time: 10:00:43

Freeze Frame:
RPM: 6317 /min
Load: 80.0 %
Speed: 88.0 km/h
Temperature: 85.0°C
Temperature: 24.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 13.970 V

000772 - Cylinder 4
P0304 - 001 - Misfire Detected
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 237634 km
Time Indication: 0
Date: 2000.00.00
Time: 10:00:43

Freeze Frame:
RPM: 6317 /min
Load: 80.0 %
Speed: 88.0 km/h
Temperature: 85.0°C
Temperature: 24.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 13.970 V

Reeceyy:
Anyone??

GVK:
When's the time it had plugs/coil packs... I'd start from there and maybe a fuel pump and check the follower

lazy:
There's lots of low fuel pressure faults. I would change the fuel filter to start with as it's cheap and easy to do.

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