July 22, 200619 yr Where do I begin... My wagon has been sitting for the last two months with a massive crack in the crossover pipe just before the turbo. My SS header was too short to reach the turbo so I had to wait until I could have some spare material welded in. Well all that is finally finished but now I have an even worse problem. While on the first drive since installing the header, EA82 downpipe and cut airbox I found that the car wouldn't make boost until about 4.5k rpm... Going down hill... I can't think of what to check because I really didnt touch anything on the car while it sat. I've checked some of the vacuum hoses, checked for exhaust leaks (The noise from the cracked x-over pipe is gone) and checked the intake for blockage. The ECU is throwing codes 11 and 12 which are normal, and the fuel pump is cycling. My ignition has good components in it, and I didn't touch the timing, but I'm about to check that anyway. What the hell could be wrong with it? Anyone ever had this happen to them before?
July 23, 200619 yr Author Could a plugged cat cause this problem? I think I'm going to swap back to the stock downpipe to see if that helps. I will be losing the O2 sensor in doing that, but if it brings my power back, so be it... Anyone think anything about this?
July 23, 200619 yr Does the wastegate linkage move freely? It should have a spring holding it in the closed position, the spring is inside the little can the linkage comes out of, pulls the rod in.
July 23, 200619 yr Yeah id be looking at a stuck wastegate for starters......does it run ok apart from no boost?
July 24, 200619 yr Author Officially, half of this problem is solved. I found out that I wasn't flowing enough exhaust gas out of the stock EA82T downpipe and that the cat must be fried. I fixed this by using the original EA81T downpipe which was known to be in good condition. The other half that remains unsolved is the location of my O2 sensor. It was in the crossover pipe from the factory, but after the header, the only option was the EA82 dp until I get an aftermarket one. So there we have it, until I get a better down pipe and a full exhaust, I will be limited to near stock performance.
July 24, 200619 yr If you have access to a mig welder, you can put in a fitting for the O2s anywhere. Most exhaust shops have them.
July 24, 200619 yr Author Well, the wagon is not my daily driver right now, so I might as well wait until I get teh WRX unit on there since it has an O2 bung.
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