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Discussion Starter #1
So I was coming down the highway under a bit of throttle the other day and lost boost. It starts to stutter as soon as it starts to build boost and limits the rpms. Highest boost its hit is 2psi. The AP is showing that ambient pressure is the target. I tried resetting the ECU and remapping. Haven't found any boost leaks, I checked extensively since I have a FMIC. AP numbers for Wastegate Duty look solid. I changed the fuel pump hoping that it was a fuel issue. I checked all boost and vaccum lines as well. It still drives fine just no boost. The only CEL is P0410. Any ideas?

2007 WRX
STI Pump
Turbo back catless
Cobb OTS Map Stage 3 VF39
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