Okay so I installed ipd turbo back exhaust and also added an angle flange which has more flow. I also have the snabb intake pipe and snabb tcv as well as ipd intake. All hoses replaced with silicone. All vacuum lines replaced. So the issue I'm having is the car shows that it's boosting 12psi and takes off fine but when staying on the gas it feels like the car is fighting itself. Almost like a misfire but not. All ignition components replaced and I have a msd coil. I keep getting 4-1-4 code which is boost control configuration fault. Wastegate is set at 2 psi. I have tried turning it up and turning it down to no avail. Now the question is the exhaust flange is a China brand not the one ard sells I wonder if that's the issue or maybe I just need to get a tune because maybe the stock ecu can't cope. Any thoughts would be appreciated.
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