I have an r34 gtt running nistune, Hypergear ATR 42, Bosch 040, Bosch ev14 injectors, front mount and 3" exhaust turbo back. It has been making 277 kw atw pretty happily and it has started running like a pig. Really rich, and when on full boost in 3rd gear, the engine light comes on. I plugged it into a scan tool and it came up as boost sensor. I tried to get one new but can't seem to find one, I got a second hand one from northside auto wreckers which arrived broken and still haven't received a working one back. Would a broken sensor cause the car to loose power, run like a pig and run really rich?