P2261 & P310B 012555 Could this be the cause?

[Ronny_Nordstrom]

Sup. Just wondering what will cause these codes to come up while driving ( no check engine light ON )? The engine is rebuilt with uprated pistons etc. S3 injectors, Autotech HPFP, 3" DP with sport cats, ecs CAI, K04 Hybrid turbo, Turbnosmart, 1bar spring, turbosmart bypass 50/50, Milltek, bigger intercooler, PCV valve delete, and new flywheel and clutch FX300.
Should i worry about these codes or delete them or what can i do to fix the problem? tried google but looking for help from ytou guys,

[Theiceman]

could this be the cause ? could what be the cause ? , im not sure what you are asking , plus you haven't even stated with the codes mean. Do you expect us to go look it up to help you ?

[Ronny_Nordstrom]

could this be the cause ? could what be the cause ? , im not sure what you are asking , plus you haven't even stated with the codes mean. Do you expect us to go look it up to help you ?

Sry was kinda in a hurry when i was writing this. This is the codes i'm getting

18693/P2261/008801 - Boost Pressure Control Valve (N249): Mechanical Malfunction ( vcds says with 9% load )
P310B/012555 - Low Pressure Fuel regulation: Fuel Pressure Outside Specification

Could the cause be when i have uprated fuel pumps?

[EvolutionArmory]

Can you log boost and fuel pressure with VCDS or are you in a hurry 🤣

All joking aside. You need to run logs bud.

003, 115, 119 and 003, 230 and 231 with VCDS. 115 and 119 are boost and N75 duty cycle and 230 and 231 are low and high fuel pressure.

First thing I’d do is throw that splitter in the trash and see if the stock DV works better or check your wire connection to it. Your N249 is your DV so the fact that you have this code and are running some sort of aftermarket valve doesn’t surprise me.

[Ronny_Nordstrom]

Can you log boost and fuel pressure with VCDS or are you in a hurry 🤣

All joking aside. You need to run logs bud.

003, 115, 119 and 003, 230 and 231 with VCDS. 115 and 119 are boost and N75 duty cycle and 230 and 231 are low and high fuel pressure.

First thing I’d do is throw that splitter in the trash and see if the stock DV works better or check your wire connection to it. Your N249 is your DV so the fact that you have this code and are running some sort of aftermarket valve doesn’t surprise me.

Will try to do some logs when i get the car back from paint workshop. What should i be waiting to see on the logs when doing them?

[EvolutionArmory]

See if actual boost meets specified. See if there are any dips in actual boost. See if N75 duty cycle is maxed out.

See if low pressure fuel dips below 2.5 bar at wot. See if fuel pump duty cycle is higher than 55% at warm idle. Block 106.2