| JSC Speed Project GT35R STi: Phase 1 |
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My 2004 STi came equipped with a Deadbolt TD06 18G turbo, Hydra Standalone EMS, Tial External wastegate, and most of the supporting modifications to get to that point such as a full exhaust, fuel pump and injectors. The setup felt decent, |
| but a few of these parts were in pretty poor shape. The exhaust sounded terrible, and the uppipe / downpipe suffered from some bad leaks. There was oil all through out the intake track as well. Since the exhaust was the easiest to fix - I started there. | |
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| I decided to go with the Borla XR-1 with the 3" adaptor. Borla exhausts always seem to have the correct combination of power with a good sound, and this one is no exception. Fitment was perfect, and it made the car more enjoyable right away. The Borla XR-1 is a slip fit exhaust. All you have to do is unbolt the stock catback and bolt the Borla in place. Leave all the slip fit connections loose until everything is positioned properly. Once it looks right - tighten it up and you're done! |
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The next step was to attack the oil issue. When you have oil in the intake track - there are a few places you can turn. It seemed to have a ton of oil going through it. I wasn't sure if this was because it was going through the intake and there was a problem elsewhere, or if the turbo had bad oil seals. I sent it out to Jerry at Deadbolt to get looked at. He rebuilt the turbo and shipped it back out the same day!!! That was the good news. The bad news was that the turbo was in decent condition so my problem was elsewhere. |
| On my quest to find where the oil was coming from, I installed a Greddy Catch Can. Subaru's are known to blow by a bit of oil, so I figured it was a good precaution either way. A catch can on a Subaru is extremely easy to set up. All you have to do is intercept the crank case breather lines that run into the turbo inlet hose. Cut that hose, and put connectors on both ends. Run one line into the catch can, and then the other from the catch can back to the hose. All you have done is put a filter in the system. Oil is usually dripping through |
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these lines, so it falls into the can instead of getting pushed back through the system. The catch can was very useful, and kept almost all oil out of the intake. This was a great band-aid for this car, but the problem eventually got out of control. More info on this is available in PHASE 3. |