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Hey all. Last week I bought a 2005 WRX STI with 67000 miles. Now I am discovering several things that didn't get discovered during the test drive and the owner didn't mention. It has a Cobb tuning access port that was running a "custom" tune. That tune supposedly added 30 HP, but it killed any and all fuel mileage and was causing a bank 1 too rich code. I reflashed it to the Cobb factory economy tune, now I have 7 different check engine codes. Evap system error/PCV system error and the rest are low sensor voltage errors. It would not let me do the realtime map swaps while it was flashed to the custom tune. Now that it is flashed to a Cobb tuner factory map I can realtime any map other than the custom map. It has a Cobb short cold intake, a Mishimoto radiator, Grimspeed turbo solenoid controller, and Ohlin race coilovers. It also has a clicking noise from the tranny. It is worst in second gear, but can also be heard in first, neutral and reverse. It is absent when the clutch is disengaged and you sit still, but you can hear it faintly when rolling to a stop with the clutch in. I discovered much to my anger and disappointment that the tranny had been being run with almost no oil in it for several hundred miles after they had a shop install a new clutch. Currently my biggest worry is to get the ECU squared away. I want it to run on something other than their custom tune without throwing half a dozen engine codes. All of my subi experience has been from restoring my BRAT and XT, only 80s subis. This is a bit new for me. Thanks in advance. -
I have a 2011 STI Hatch with an Accessport, SF Intake, and Turbo Exhaust. It sat for about a month and a half while I was away and when I came back to drive it down the east coast, the battery was dead so I got a jump to start it and head south from Rhode Island. I was noticing some pretty awful performance and gas mileage over the 15 hour trip. I averaged about 16 mpg and was not getting the performance I had gotten before. I thought it might be from the fuel sitting so long, but I filled up the tank several times over the trip. My intake filter is in rough shape, so I plan on replacing it, but I wasn't sure if that was the problem. Should I uninstall and reinstall the Accessport since the battery died? Not sure where to go from here. I'm fairly new to the mods. Any help would be appreciated!