Hi, I have a LS2 with an E40 PCM in a Porsche Boxster. I built a 180 deg Exhaust header. I had problems with the O2 Sensors getting mixes input and and signaling lean and rich until I changed the injector selection, which seemd to fix ist.
Now i am loging the engine and also have a Innovative wideband hooked up. I have several questions.
1)I calibrated the wideband and the external instrument shows 15,2 to 15,6. I got the Wideband into the log. I will plot lamba but it wont plot Stoich. it remains at 14.7. Why is that?
2) Before the change in inlector selection the STFT seperated. one bank was rich the other lean. Now it seems to work, but the LTFT now shows one bank in plus the other in minus. Is that a problem and how can it be fixed.
3) when I raise the RPM the Enginedsoes not stay constant it waves up and down. I heard that could be a rich running engine. Is that correct. Would lambda show me that?
4) i tried to plot the closed loop second sensors (after CAT). When I select them in the charts, B2S2 and B2S2 plot exactly the same value. Also the value should be more level then the pre CAT sensors which it is not. Am I really plotting the correct sensors?
I would be nice if somone could help me. I am new to this.
Thanks, Frank