[DoctorDex]

Just throwing out more random thoughts:

1) I find it strange while it is missing the O2 sensor voltages of both the front and rear banks are pretty much identical. This makes me wonder if the missing is occuring on both banks?

2) Is it possible to check for a "dirty" rpm signal? Could one tap into the PTU rpm signal and then again at the ECU and compare the two using an oscilloscope? Maybe it might be an idea to run a seperate shielded wire from the PTU and/or CAS to the ECU and see if it makes a difference?

3) With regards to the methanol test, I don't know if it was entirely accurate because there was an extra variable I didn't consider previously. While spraying the meth, I used the MAFTranslator "trigger wire" to pull the maximum amount of fuel while spraying. This would have fooled the ECU into thinking there was significantly less load (air) than there actually was and as result it increased timing to a maximum. In addition, the size of the nozzles I was using were way overkill for that test (2x375ml @ 220psi). I was literally flooding the motor with methanol. This would have made the engine conditions very similar to what it sees during cold start (low load & +++ fuel).

I think I may try this test again, using a tiny nozzle (ie. 60 cc/min @ 220 psi) and hopefully this way I won't have to pull fuel to compensate. The only thing stopping me is that I need a 60 cc/min nozzle and after the last time running 100% meth, I fried all the seals in my quick connect fittings & check valves. I ended up having to re-plumb my entire alchy system.