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Hello,
Just bought a 2007 Subaru WRX TR and new to the turbo world. The car has around 167,XXX miles. Some mods that I can name out is Cobb Accessport v3, Stage 2 I believe, new installed OEM Exedy clutch and flywheel with less than 1k miles on them, Turbo XS boost controller, HKS Blowoff valve, HKS exhaust, front mount intercooler, used turbo inlet which works fine. FAB Spec Coilovers.
Now the issues;
1- Just replaced the vacuum HKS SSQV Vacuum filter, since previous one broke in half. HKS BOV seems to work since it’s making noise but whenever I step on the gas and let go to brake or stop it dies. In other words, after hitting boost the car dies. Thinking it might be a vacuum leak since I changed the inlet which was ripped and worked fine for a while. To mention, the car was running fine when the HKS BOV wasn’t connected, pretty much the turbo spooling or fluttering.
2- Check engine light is on and gives out P0442 code.
3- Car has problems or a hard time going over 80 mph ( Texas Highways)
Need help or might as well sell it lol
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Check the EVAP hoses. Some vehicles will kick this with a faulty gas cap as well although I think Subaru has a specific gas cap code.
 
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