Take your wideband o2 out of your exhaust and give the sensor power. Have megatune and or logworks software open and look at the afr. On logworks it should say 20% oxygen in a grey writing. Take a lighter and let the butane gas fumegate into the o2 sensor. The afr should start decreasing and stop at or around 8. If the afr is still not accurate try doing a free air calibration. After the free air calibration test it again. If your reading isn't accurate its your controller/wiring. If your reading is accurate you have an exhaust leak.
I definately have an exhaust leak. I don't know if it's from having an external wastegate with no dump tube or if its from a bad exhaust manifold gasket,but I am going to trace it down and then see how the afr is. Hopefully this helps.
